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IPQ8078 is an SoC for 11ax WiFi Access Points, Retail Routers and Carrier Gateways. The chip consists of a WiFi subsystem, a networking subsystem and a CPU subsystem. The WiFi subsystem supports IEEE802.11ax. The IPQ8078 supports dual band dual current (DBDC) operation. 12 antenna chains operate in a two radio configuration as 8x8 in 5 GHz and 4x4 in 2.4 GHz.

Qualcomm Technologies, Inc IPQ8078 Wi-Fi Access Point SoC Device Specification 80-YA726-4 Rev C January 29, 2018 For additional information or to submit technical questions go to https://createpoint.qti.qualcomm.com Confidential and Proprietary – Qualcomm Technologies, Inc NO PUBLIC DISCLOSURE PERMITTED: Please report postings of this document on public servers or websites to: DocCtrlAgent@qualcomm.com Restricted Distribution: Not to be distributed to anyone who is not an employee of either Qualcomm Technologies, Inc or its affiliated companies without the express approval of Qualcomm Configuration Management Not to be used, copied, reproduced, or modified in whole or in part, nor its contents revealed in any manner to others without the express written permission of Qualcomm Technologies, Inc Qualcomm is a trademark of Qualcomm Incorporated, registered in the United States and other countries Other product and brand names may be trademarks or registered trademarks of their respective owners This technical data may be subject to U.S and international export, re-export, or transfer (“export”) laws Diversion contrary to U.S and international law is strictly prohibited Qualcomm Technologies, Inc 5775 Morehouse Drive San Diego, CA 92121 U.S.A © 2017-2018 Qualcomm Technologies, Inc All rights reserved Revision history Revision 80-YA726-4 Rev C Date Description A July 2017 Initial release B November 2017  Mechanical information: Updated PRR code in Table 4-2 and Table 4-4 C January 2018  Introduction: Updated A53 frequency to 2.2 GHz, NPU frequency to 1.7 GHz, and DDR4 rate to 2400 MT/s Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION Contents Introduction 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Pin definitions 14 2.1 2.2 2.3 80-YA726-4 Rev C Functional block diagram Wi-Fi subsystem Networking subsystem CPU subsystem Interfaces and power management IPQ8078 features 10 1.6.1 Wi-Fi subsystem 10 1.6.2 Networking subsystem 10 1.6.3 CPU subsystem 11 1.6.4 Peripherals/interfaces 12 1.6.5 Power management 12 1.6.6 Platform extension options 12 1.6.7 Package 12 Terms and abbreviations 12 I/O parameter definitions Pin map Pin descriptions 2.3.1 CLK/RST and PMIC interface 2.3.2 PCI express endpoint 2.3.3 Wi-Fi GHz PHY 2.3.4 Wi-Fi 2.4 GHz PHY 2.3.5 Analog test 2.3.6 DDR4/DDR3L 2.3.7 Mode 2.3.8 PLL test clock 2.3.9 PSGMII 2.3.10 SDC 2.3.11 JTAG 2.3.12 USB 2.3.13 USXGMII 2.3.14 GPIO Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 14 15 17 17 17 18 20 21 21 24 24 25 25 26 26 27 27 IPQ8078 Wi-Fi Access Point SoC Device Specification Contents 2.3.15 Ground, power-supply and NC 37 2.3.16 Boot configuration GPIOs 40 Electrical specifications 42 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 Absolute maximum ratings Operating conditions Power consumption Power sequencing Digital-logic characteristics Timing characteristics Memory support Connectivity UNIPHY interfaces Internal functions 3.10.1 Clocks 3.10.2 Modes and resets 3.10.3 JTAG 3.11 Power management interfaces 3.11.1 SPMI 3.12 Wi-Fi and Analog interfaces Mechanical information 50 4.1 4.2 4.3 4.4 4.5 5.2 5.3 5.4 50 52 52 53 54 54 Carrier 5.1.1 Tape and reel information 5.1.2 Matrix tray information Storage 5.2.1 Bag storage conditions 5.2.2 Out of bag duration Handling 5.3.1 Baking 5.3.2 Electrostatic discharge Barcode label and packing for shipment 55 55 56 57 57 57 57 57 57 58 PCB mounting guidelines 59 6.1 6.2 80-YA726-4 Rev C Device physical dimensions Part marking 4.2.1 Specification-compliant devices Device ordering information Device moisture-sensitivity level Thermal characteristics Carrier, storage, and handling information 55 5.1 42 43 45 45 47 47 47 47 47 47 47 48 49 49 49 49 RoHS compliance 59 SMT parameters 59 Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION IPQ8078 Wi-Fi Access Point SoC Device Specification 6.3 59 60 61 61 61 62 Part reliability 63 7.1 7.2 80-YA726-4 Rev C 6.2.1 Land pad and stencil design 6.2.2 Reflow profile 6.2.3 SMT peak package-body temperature 6.2.4 SMT process verification 6.2.5 Board-level reliability High-temperature warpage Contents Reliability qualifications summary 63 Qualification sample description 63 Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION IPQ8078 Wi-Fi Access Point SoC Device Specification Contents Figures Figure 1-1 Figure 2-1 Figure 3-1 Figure 3-2 Figure 3-3 Figure 3-4 Figure 4-1 Figure 4-2 Figure 4-3 Figure 5-1 Figure 5-2 Figure 5-3 80-YA726-4 Rev C IPQ8078 functional block diagram IPQ8078 pin assignments 16 Power-on sequence 46 XO timing parameters 47 Sleep-clock timing parameters 48 JTAG interface timing diagram 49 IPQ8078 mechanical dimensions, top and bottom views 51 IPQ8078 device marking 52 Device identification code 53 Tape orientation on reel 55 Part orientation in tape 56 Matrix tray part orientation 56 Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION IPQ8078 Wi-Fi Access Point SoC Device Specification Contents Tables Table 1-1 Terms and abbreviations Table 2-1 I/O description parameters Table 2-2 CLK/RST and PMIC interface Table 2-3 PCI express endpoint Table 2-4 Wi-Fi GHz PHY Table 2-5 Wi-Fi 2.4 GHz PHY Table 2-6 Analog test Table 2-7 DDR4/DDR3L Table 2-8 Mode Table 2-9 PLL test clock Table 2-10 PSGMII Table 2-11 SDC Table 2-12 JTAG Table 2-13 USB Table 2-14 USXMII Table 2-15 GPIO pins Table 2-16 Ground, power-supply and NC pins Table 2-17 Boot configuration GPIOs Table 3-1 Absolute maximum ratings Table 3-2 Operating conditions Table 3-3 Operating conditions for voltage rails with AVS Table 3-4 XO timing parameters Table 3-5 Sleep-clock timing parameters Table 3-6 JTAG interface timing characteristics Table 3-7 Supported SPMI standards and exceptions Table 4-1 Package marking line description Table 4-2 Device identification details Table 4-3 Source configuration code Table 4-4 Ordering numbers Table 4-5 Device JEDEC thermal resistance Table 6-1 Typical SMT reflow profile conditions (for reference only) 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 13 14 17 17 18 20 21 21 24 24 25 25 26 26 27 27 37 40 42 43 45 48 48 49 49 53 53 54 54 54 60 Introduction IPQ8078 is an SoC for 11ax Wi-Fi Access Points, Retail Routers and Carrier Gateways The chip consists of a Wi-Fi subsystem, a networking subsystem and a CPU subsystem 1.1 Functional block diagram IPQ8078 Memory DDR3L/4 32/16b 2400MT/s SDMMC LTE-WAN High Speed I/F AV/Voice/Display 15.4 Serial I/F NAND BT/BLE CPU Subsystem Quad A53 (64bit, v8 ISA) @ 2.2GHz 18.4k DMIPS Serial NOR GHz 11ax BB/MAC 8×8/80 or 4x4/80+80 GPIOs I2C SPI UART SDIO 2.4 GHz 11ax BB/MAC 4x4/40 PCM I2S TDM Display 4x Wi-Fi Subsystem I/Q I/Q 4x 5G RF 4x I/Q 2G RF Network Subsystem SerDes Packet Processor Engine (37.5Mp/s) (Switch, Router, Classifier, Traffic Mgr) PCIe v2 PCIe v2 Networking Processing Unit (2.2Mp/s) (Dual Core Ubi32 @ 1.7GHz) USB3.0 USB3.0 In Line Security Engine (5Gbps) USXGMII SGMII+ 1/2.5/5/10GbE PHY USXGMII SGMII+ 1/2.5/5/10GbE PHY PSGMII 5x 1GbE PHY Advanced Power Manager Figure 1-1 5G RF PMIC IPQ8078 functional block diagram 1.2 Wi-Fi subsystem The Wi-Fi subsystem supports IEEE802.11ax The IPQ8078 supports dual band dual current (DBDC) operation 12 antenna chains operate in a two radio configuration as 8x8 in GHz and 4x4 in 2.4 GHz 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION IPQ8078 Wi-Fi Access Point SoC Device Specification Introduction The Wi-Fi PHY rates equate to 5950 Mbps, 4800 Mbps for GHz and 1150 Mbps for 2.4 GHz, enabling an AX6000 product 1.3 Networking subsystem The networking subsystem is a high performance high throughput programmable offload engine to the networking stack that runs on the Host CPU subsystem It interfaces to Ethernet SerDes to connect to external multi-GbE PHYs Two of the three SerDes support up to 10GbE PHY (either USXGMII, XFI, SGMII or SGMII+) while the third SerDes runs in either PSGMII, QSGMII or SGMII mode to connect to QCA8075 (5 port GbE PHY array) or QCA803x (single port GbE PHY) The networking subsystem is capable of classifying incoming packets at an aggregate throughput rate of 25 Gbps, 37.5 million packets per second (Mpps) for 64Byte packets This high performance ingress packet engine makes IPQ8078 very well suited to deliver Quality of Service (QoS) for carrier gateway applications to guarantee zero packet loss for paid services like voice and video The networking subsystem performs standard routing/bridging within the WAN/LAN Ethernet ports at a peak rate of 37.5 Mpps Advanced features including tunneling and de/fragmentation are performed by a networking processing unit (NPU) that consists of dual 12 threaded programmable engines (UBI32 cores), each running at 1.7 GHz for up to 2.2 Mpps throughput IPQ8078 contains an in line security engine with AES 128/256, SHA1-96, 128, 256, and 512 and 3DES for up to Gbps throughput 1.4 CPU subsystem The CPU subsystem consists of quad ARM Cortex A53s @ 2.2 GHz, with 64 bit ISA v8 instruction set The I$/D$ sizes of core are 32kB, while the L2$ is 512kB Each A53 core has a 64bit Floating Point/NEON DSP extension that could be used for enhanced audio/voice/video processing 1.5 Interfaces and power management IPQ8078 comes with a large variety of interfaces to enable various platform configurations It has dual PCIe gen2, dual USB3.0, multiple serial IOs selectable between SPI/I2C/UART, Dual SDIO for eMMC and SD card, I2S/PCM/Display Interfaces 16/32 bits DDR3L/4 up to 2400 MT/s, parallel NAND, serial NOR, and Wi-Fi/IOT coexistence interfaces for up to radios IPQ8078 comes with advanced power management for lowest active and standby power consumption, making it extremely valuable for carrier gateway and Enterprise AP power over Ethernet (PoE) applications A companion PMIC PMP8074 is used to optimally manage active/standby power 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION IPQ8078 Wi-Fi Access Point SoC Device Specification Introduction 1.6 IPQ8078 features 1.6.1 Wi-Fi subsystem  GHz antenna configuration   2.4 GHz antenna configuration  Twelve IQ transmit pairs and twelve IQ receive pairs to external QCN51xx  802.11ac mode  PHY rate: 3466 Mbps (5 GHz) and 800 Mbps (2.4 GHz)  GHz: SU-MIMO (8ss, user) and MU-MIMO (8ss, users)  2.4 GHz: SU-MIMO (4ss, user) and MU-MIMO (4ss, users)  Explicit beamforming  3.2 µs Symbol Duration; 0.4 µs and 0.8 µs GI 802.11ax mode  PHY rate: 4800 Mbps (5 GHz) and 1150 Mbps (2.4 GHz)  GHz: SU-MIMO (8ss, user), DL MU-MIMO (8ss, user), DL-OFDMA (8 users)  2.4 GHz: SU-MIMO (4ss, user), DL MU-MIMO (4ss, user), DL-OFDMA (8 users)  Explicit beamforming  12.8 µs Symbol Duration; 0.8 µs, 1.6 µs, or 3.2 µs GI  Legacy 11a/b/g/n  Radio Control interfaces, including Smart Antenna interface to manage external antenna switch  4.9 GHz Operation for public safety Networking subsystem   SerDes for external Ethernet PHYs  Dual up to 10.3125G Ethernet SerDes ports for external 10/5/2.5/1GbE PHYs Each SerDes can operate in XFI, USXGMII, SGMII+ or SGMII mode  Single up to 6.25G Ethernet SerDes for external or ports GbE PHY array or single GbE PHY Packet Acceleration  80-YA726-4 Rev C 4x4/4s-40MHz   1.6.2 8x8/8s-80MHz or 4x4/4s-80+80MHz Packet Processing Engine (PPE) for standard 5-tuple routing/bridging of IPv4 and IPv6 packets with ingress capacity of 37.5M packet per second (Mpps) and egress capacity of up to 10 Mpps per port Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 10 IPQ8078 Wi-Fi Access Point SoC Device Specification 3.10.3 Electrical specifications JTAG t(tckcy) t(tckh) t(tckl) TCK t(htms) t(sutms) TMS t(htdi) t(sutdi) TDI t(do) TDO Figure 3-4 Table 3-6 JTAG interface timing diagram JTAG interface timing characteristics Parameter Comments Min Typ Max Unit t(tckcy) TCK period TBD – – ns t(tckh) TCK pulse width high TBD – – ns t(tckl) TCK pulse width low TBD – – ns t(sutms) TMS input setup time TBD – – ns t(htms) TMS input hold time TBD – – ns t(sutdi) TDI input setup time TBD – – ns t(htdi) TDI input hold time TBD – – ns t(do) TDO data output delay – – TBD ns 3.11 Power management interfaces 3.11.1 SPMI Table 3-7 Supported SPMI standards and exceptions Applicable standard MIPI Alliance Specification for System Power Management Interface (SPMI) version 1.0 MSM variations Feature exceptions None None 3.12 Wi-Fi and Analog interfaces This information will be included in future revisions of this document 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 49 Mechanical information 4.1 Device physical dimensions The IPQ8078 device is available in the 21 mm × 21 mm × 1.8 mm FCBGA package that includes a ground pad for improved grounding, mechanical strength, and thermal continuity Pin is located by an indicator mark on the top of the package Figure 4-1 shows the IPQ8078 device mechanical dimensions, top and bottom views 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 50 IPQ8078 Wi-Fi Access Point SoC Device Specification Figure 4-1 NOTE Mechanical information IPQ8078 mechanical dimensions, top and bottom views Unless otherwise specified: Interpret drawing per ASME Y14.100 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 51 IPQ8078 Wi-Fi Access Point SoC Device Specification Mechanical information All dimensions shown on this drawing are in millimeters (mm) Interpret dimension and tolerances per ASME Y14.5-2009 Workmanship shall be in accordance with Qualcomm package assembly workmanship standard 80-V0691-2 Qualcomm supplied electronic database(s) are for reference only Dimensional information on current revision of released drawing takes precedence over electronic database(s) Change approval All changes shall be in accordance with 80-V3652-1 General Supplier Quality Requirement Dimension measured at the maximum solder ball diameter, parallel to the primary datum -C- The seating plane is defined by three non-colinear balls that support the free standing package when it is placed on the flat surface The vectors formed by the three balls establishing the seating plane shall include the center of gravity Primary datum -C- is determined by the first order LMS regression plane through the spherical crowns of all solder balls on this side of the package 10 Maximum package height determined by RSS tolerance method 11 Allowable component area Maximum component height shall not exceed 0.40 mm 12 Dimension includes (0.08 mm) bump standoff with underfill 13 Underfill area, package contact prohibited 14 Ink not permitted on die and substrate surfaces 4.2 Part marking 4.2.1 Specification-compliant devices Line P1 Line P2 IPQ8078 [Variant] Line P3 Line E FAYWWXXX Line T1 Ball A1 identifier Figure 4-2 80-YA726-4 Rev C IPQ8078 device marking Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 52 IPQ8078 Wi-Fi Access Point SoC Device Specification Table 4-1 Mechanical information Package marking line description Line Marking Description Line P1 QUALCOMM Qualcomm name Line P2 IPQ8078 Qualcomm Technologies, Inc product name Line P3 [Variant] Device variant information  Line T1 Pin See Table 4-2 for assigned values FAYWWXXX F = source of supply code  F = J (Samsung) A = assembly site code  A = H (STATSChipPAC, KOREA)  A = E (ASE, Taiwan) Y = single/last digit of year WW = two-digit work week of year specified by Y XXX = traceability number ● Ball A1 identifier Line E Space reserved for optional additional trace information 4.3 Device ordering information Figure 4-3 shows the form of ordering numbers Device ID code AAA-AAAA -P - CCC DDDDDD - EE - RR Symbol definition Product name Config code Number of pins Package type Shipping package Product revision Example IPQ-8078 -0 - 772 FCBGA - TR - 01 -S - BB Source Feature code code -0 - VV Feature code (BB) may not be included when identifying older devices Figure 4-3 Device identification code Device identification details for all sample available to date are summarized in Table 4-2 Table 4-2 Device identification details Device Variant (PRR-BB) P = product configuration code RR = product revision code Shipping package2 S value3 001 TR 001 MT BB = feature code (if applicable)1 IPQ8078 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 53 IPQ8078 Wi-Fi Access Point SoC Device Specification Mechanical information BB is the feature code that identifies an IC’s specific feature set, which distinguish it from other versions or variants TR = tape and reel, MT = matrix tray S is the source configuration code that identifies all the qualified die fabrication-source combinations available at the time a particular sample type was shipped S values are defined in Table 4-3 Table 4-3 Source configuration code S value Die F value = J Digital Samsung Table 4-4 shows the available ordering numbers Table 4-4 Ordering numbers Ordering number IPQ-8078-0-772FCBGA-MT-01-0 IPQ-8078-0-772FCBGA-TR-01-0 4.4 Device moisture-sensitivity level Plastic-encapsulated surface mount packages are susceptible to damage induced by absorbed moisture and high temperature A package’s moisture-sensitivity level (MSL) indicates its ability to withstand exposure after it is removed from its shipment bag, while it is on the factory floor awaiting PCB installation A low MSL rating is better than a high rating; a low MSL device can be exposed on the factory floor longer than a high MSL device Qualcomm Technologies Inc follows the latest IPC/JEDEC J-STD-020 standard revision for moisture-sensitivity qualification The IPQ8078 is classified as MSL3; the qualification temperature was 255ºC 4.5 Thermal characteristics Table 4-5 Device JEDEC thermal resistance Parameter JA Junction-to-Ambient Comment   JB Junction-to-Board   JC Junction-to-Case   80-YA726-4 Rev C Typ Unit With thermal vias JESD51-2A, JESD51-7 18.39 °C/W No thermal vias JESD51-7, JESD51-8 9.10 °C/W No thermal vias JESD51-7, JESD51-8 0.21 °C/W Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 54 Carrier, storage, and handling information 5.1 Carrier 5.1.1 Tape and reel information Carrier tape system conforms to the EIA-481 standard Simplified sketches of the IPQ8078 tape carrier is shown in Figure 5-1 and Figure 5-2, including the part orientation Tape and reel details for the IPQ8078 are as follows:  Reel diameter: 330 mm  Hub size: 178 mm  Tape width: 32 mm  Tape pocket pitch: 24 mm  Feed: Dual  Units per reel: 500 Figure 5-1 80-YA726-4 Rev C Tape orientation on reel Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 55 IPQ8078 Wi-Fi Access Point SoC Device Specification Figure 5-2 5.1.2 Carrier, storage, and handling information Part orientation in tape Matrix tray information Qualcomm Technologies matrix tray carriers conform to JEDEC standards The device pin is oriented to the chamfered corner of the matrix tray Each tray of the IPQ8078 device contains up to 60 devices See Figure 5-3 for matrix-tray key attributes and dimensions Key dimensions Figure 5-3 80-YA726-4 Rev C Array × 12 = 60 M 16.59 mm M1 16.59 mm M2 25.62 mm M3 25.68 mm Matrix tray part orientation Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 56 IPQ8078 Wi-Fi Access Point SoC Device Specification Carrier, storage, and handling information 5.2 Storage 5.2.1 Bag storage conditions IPQ8078 devices delivered in tape and reel carriers must be stored in sealed, moisture barrier, antistatic bags Refer to the ASIC Packing Methods and Materials Specification (80-VK055-1) for the expected shelf life 5.2.2 Out of bag duration The out-of-bag duration is the time a device can be on the factory floor before being installed onto a PCB It is defined by the device MSL rating, as described in Section 4.4 5.3 Handling Tape handling is described in Section 5.1.1 Other (IC-specific) handling guidelines are presented below 5.3.1 Baking It is not necessary to bake the IPQ8078 if the conditions specified in Section 5.2.1 and Section 5.2.2 have not been exceeded It is necessary to bake the IPQ8078 if any condition specified in Section 5.2.1 or Section 5.2.2 has been exceeded The baking conditions are specified on the moisture-sensitive caution label attached to each bag; see ASIC Packing Methods and Materials Specification (80-VK055-1) for details CAUTION 5.3.2 If baking is required, the devices must be transferred into trays that can be baked to at least 125°C Devices should not be baked in tape and reel carriers at any temperature Electrostatic discharge Electrostatic discharge (ESD) occurs naturally in laboratory and factory environments An established high-voltage potential is always at risk of discharging to a lower potential If this discharge path is through a semiconductor device, destructive damage may result ESD countermeasures and handling methods must be developed and used to control the factory environment at each manufacturing site Products must be handled according to the ESD Association standard: ANSI/ESD S20.20-1999, Protection of Electrical and Electronic Parts, Assemblies, and Equipment Refer to Section 7.1 for the ESD ratings 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 57 IPQ8078 Wi-Fi Access Point SoC Device Specification Carrier, storage, and handling information 5.4 Barcode label and packing for shipment Refer to the ASIC Packing and Materials Specification (80-VK055-1) document for all packingrelated information, including barcode label details 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 58 PCB mounting guidelines 6.1 RoHS compliance The IPQ8078 complies with the requirements of the EU RoHS directive Its SnAgCu solder balls use SAC305 composition A Product Material Declaration (PMD), which provides RoHS and other product environmental governance information, will be published when the data are available 6.2 SMT parameters This section describes board-level characterization process parameters It is included to assist customers with their SMT process development; it is not intended to be a specification for their SMT processes 6.2.1 Land pad and stencil design The land pattern and stencil recommendations presented in this section are based on Qualcomm internal characterizations for lead-free solder pastes on an eight-layer PCB built primarily to the specifications described in JEDEC JESD22-B111 Qualcomm recommends characterizing the land patterns according to each customer's processes, materials, equipment, stencil design, and reflow profile prior to PCB production Optimizing the solder stencil pattern design and print process is critical to ensure print uniformity, decrease voiding, and increase board-level reliability General land pattern guidelines:  Non-solder-mask-defined (NSMD) pads provide the best reliability  Keep the solderable area consistent for each pad, especially when mixing via-in-pad and non-via-in-pad in the same array  Avoid large solder mask openings over ground planes  Traces for external routing are recommended to be less than or equal to half the pad diameter to ensure consistent solder joint shapes One key parameter that should be evaluated is the ratio of aperture area to sidewall area – the area ratio (AR) For more information, refer to PCB Land and Stencil Design Guide (LS90-NG134-1) 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 59 IPQ8078 Wi-Fi Access Point SoC Device Specification 6.2.2 PCB mounting guidelines Reflow profile Reflow profile conditions typically used by Qualcomm for lead-free systems are listed in Table 6-1 and are shown in Figure 6-1 Table 6-1 Typical SMT reflow profile conditions (for reference only) Profile stage Preheat Description Temp range Condition < 150°C 3°C/sec max Initial ramp Soak Flux activation 150 to 190°C 60 to 75 sec Ramp Transition to liquidus (solder-paste melting point) 190 to 220°C < 30 sec Reflow Time above liquidus 220 to 245°C11 50 to 70 sec < 220°C 6°C/sec max Cool down Cool rate – ramp to ambient During the reflow process, the recommended peak temperature is 245°C (minimum) This temperature should not be confused with the peak temperature reached during MSL testing, as described in Section 6.2.3 Stay above 220 C for 50 to 70 seconds Cool down Reflow c max Preheat Soak Ramp 200 C/se 150 C /sec max Temperature (C) 250 100 t t+20 t+40 t+60 t+80 t+100 t+120 t+140 t+160 t+180 t+200 Time (sec) Figure 6-1 80-YA726-4 Rev C Typical SMT reflow profile Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 60 IPQ8078 Wi-Fi Access Point SoC Device Specification 6.2.3 PCB mounting guidelines SMT peak package-body temperature This document states a peak package-body temperature in three other places within this document; without explanation, they may appear to conflict The three places are listed below, along with an explanation of the stated value and its meaning within that section’s context Section 4.4 – Device moisture-sensitivity level IPQ8078 devices are classified as MSL3@255°C The temperature (255°C) included in this designation is the lower limit of the range stated for moisture resistance testing during the device qualification process, as explained in #2 below Section 7.1 – Reliability qualification summary One of the tests conducted for device qualification is the moisture resistance test Qualcomm follows J-STD-020-C, and hits a peak reflow temperature that falls within the range of 260°C +0/-5°C (255°C to 260°C) Section 6.2.2 – Reflow profile During a production board’s reflow process, the temperature seen by the package must be controlled Obviously the temperature must be high enough to melt the solder and provide reliable connections, but it must not go so high that the device might be damaged The recommended peak temperature during production assembly is 245°C This is comfortably above the solder melting point (220°C), yet well below the proven temperature reached during qualification (255°C or more) 6.2.4 SMT process verification Qualcomm recommends verification of the SMT process prior to high-volume board assembly, including: 6.2.5  In-line solder-paste deposition monitoring  Reflow-profile measurement and verification  Visual and x-ray inspection after soldering to confirm adequate alignment, solder voids, solder-ball shape, and solder bridging  Cross-section inspection of solder joints for wetting, solder-ball shape, and voiding Board-level reliability Qualcomm conducts characterization tests to assess the device’s board-level reliability, including the following physical tests on evaluation boards:  Drop shock (JESD22-B111)  Temperature cycling (JESD22-A104)  Cyclic bend testing – optional (JESD22-B113) For board-level reliability data, refer to Board-Level Reliability 519 FCBGA (BR80-Y0791-1) 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 61 IPQ8078 Wi-Fi Access Point SoC Device Specification PCB mounting guidelines 6.3 High-temperature warpage Qualcomm measures high-temperature warpage using a shadow moire system For detailed data, refer to High-Temperature Warpage 519 FCBGA (WR80-Y0791-1) 80-YA726-4 Rev C Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 62 Part reliability 7.1 Reliability qualifications summary This information will be included in future revisions of this document 7.2 Qualification sample description 80-YA726-4 Rev C  Device name: IPQ8078  Package type: FCBGA772  Package body size: 21 mm × 21 mm × 1.8 mm  Lead count: 772  Lead pitch: 0.65 mm Confidential and Proprietary – Qualcomm Technologies, Inc MAY CONTAIN U.S AND INTERNATIONAL EXPORT CONTROLLED INFORMATION 63