87C51F Intel Corporation, 87C51F Datasheet - Page 13

• Manufacturer Part Number: 87C51F
• Description: CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
• Manufacturer: Intel Corporation

SERIAL PORT TIMING SHIFT REGISTER MODE
Test Conditions
SHIFT REGISTER MODE TIMING WAVEFORMS
EXTERNAL CLOCK DRIVE
EXTERNAL CLOCK DRIVE WAVEFORMS
Symbol
T
T
T
T
T
XLXL
QVXH
XHQX
XHDX
XHDV
1 T
T
T
T
T
Symbol
CHCX
CLCX
CLCH
CHCL
CLCL
Serial Port Clock Cycle Time
Output Data Setup to Clock
Rising Edge
Output Data Hold after
Clock Rising Edge
Input Data Hold After Clock
Rising Edge
Clock Rising Edge to Input
Data Valid
Parameter
T
A
e b
Oscillator Frequency
87C51FA FB FC
High Time
Low Time
Rise Time
Fall Time
40 C to
Parameter
a
125 C V
12 MHz Oscillator
Min
700
50
1
0
CC
e
5V
Max
700
g
Min
3 5
20
20
20% V
AUTOMOTIVE 87C51FA FB FC FC-20
10T
2T
SS
12T
CLCL
CLCL
Min
e
Variable Oscillator
0
CLCL
b
0V Load Capacitance
b
117
16 20
133
Max
20
20
10T
CLCL
Max
b
133
270961 –16
270961 –15
Units
MHz
e
ns
ns
ns
ns
80 pF
Units
ns
ns
ns
ns
s
13