80C51FA Datasheet, PDF (12/13 Pages) Intel Corporation – EVENT-CONTROL CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

AUTOMOTIVE 80C51FA 83C51FA
SERIAL PORT TIMING SHIFT REGISTER MODE
Test Conditions T_A ^{e b}40 C to ^a125 C V_CC ^e 5V g10% V_SS ^e 0V Load Capacitance ^e 80 pF
Symbol
Parameter
12 MHz Oscillator
Min
Max
Variable Oscillator
Min
Max
Units
T_XLXL Serial Port Clock Cycle Time
1
12T_CLCL
ms
T_QVXH Output Data Setup to Clock
700
10T_CLCL^b133
ns
Rising Edge
T_XHQX Output Data Hold after
50
2T_CLCL^b117
ns
Clock Rising Edge
T_XHDX Input Data Hold After Clock
0
0
ns
Rising Edge
T_XHDV Clock Rising Edge to Input
700
Data Valid
10T_CLCL^b133 ns
SHIFT REGISTER MODE TIMING WAVEFORMS
270501 – 15
EXTERNAL CLOCK DRIVE
Symbol
Parameter
Min
Max
Units
1 T_CLCL
Oscillator Frequency
35
16
MHz
T_CHCX
High Time
20
ns
T_CLCX
Low Time
20
ns
T_CLCH
Rise Time
20
ns
T_CHCL
Fall Time
20
ns
EXTERNAL CLOCK DRIVE WAVEFORM
270501 – 16
12