Unit 8-9
Unit 8: Lesson 5: C1-2/ p.89-90
... something. This sign says “you can’t park here”. Unit 8: Lesson 5: C1-2/ p.89-90 - You can’t go into that street (cannot) Model sentences. - You can park here Unit 8: Lesson 5: C1-2/ p.89-90 III. Practice. ... signs and add Can / Can“t. Unit 8: Lesson 5: C1-2/ p.89-90 III. Practice. * Picture Drill: a b c d e f Eg: S 1: What does this sign mean ? S2: You can’t park here. Unit 8: Lesso...
Giới thiệu chip 89S52
... IN
t
CHCX
t
CHCX
t
CLCX
t
CLCL
t
CHCL
t
CLCH
V - 0.5V
CC
0.45V
0.2 V - 0.1V
CC
0.7 V
CC
External Clock Drive
Symbol Parameter Min Max Units
1/t
CLCL
Oscillator Frequency 0 33 MHz
t
CLCL
Clock Period 30 ns
t
CHCX
High Time 12 ns
t
CLCX
Low ... V
CC
= 4.0V to 5.5V and Load Capacitance = 80 pF.
Symbol Parameter
12 MHz Osc Variable Oscillator
UnitsMin Max Min Max
t
XLXL
Serial Port Clock Cycle T...