AUTOMOTIVE MICROCONTROLLER MCS 51
EXTERNAL DATA MEMORY WRITE CYCLE
270499 –9
SERIAL PORT TIMING
Symbol
T
XLXL
T
QVXH
T
XHQX
T
XHDX
T
XHDV
SHIFT REGISTER MODE
12 MHz Oscillator
Min
Max
Variable Oscillator
Min
12T
CLCL
10T
CLCL
b
133
2T
CLCL
b
117
0
700
10T
CLCL
b
133
Max
ms
ns
ns
ns
ns
Units
Test Conditions T
A
e b
40 C to
a
110 C V
CC
e
5V
g
10% V
SS
e
0V Load Capacitance
e
80 pF
Parameter
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
10
700
50
0
9