AP87C54 View Datasheet(PDF) - Intel
Part Name
Description
MFG CO.
'AP87C54' PDF : 20 Pages View PDF
AUTOMOTIVE 87C54 87C54-20
SERIAL PORT TIMING SHIFT REGISTER MODE
Test Conditions TA e b40 C to a125 C VCC e 5V g 20% VSS e 0V Load Capacitance e 80 pF
Symbol
Parameter
12 MHz Oscillator
Min
Max
Variable Oscillator
Min
Max
Units
TXLXL Serial Port Clock Cycle Time
1
12TCLCL
ms
TQVXH Output Data Setup to Clock
700
10TCLCLb133
ns
Rising Edge
TXHQX Output Data Hold after
50
2TCLCLb117
ns
Clock Rising Edge
TXHDX Input Data Hold After Clock
0
0
ns
Rising Edge
TXHDV Clock Rising Edge to Input
700
Data Valid
10TCLCLb133 ns
SHIFT REGISTER MODE TIMING WAVEFORMS
EXTERNAL CLOCK DRIVE
Symbol
Parameter
Min
1 TCLCL
Oscillator Frequency
87C54
35
TCHCX
High Time
20
TCLCX
Low Time
20
TCLCH
Rise Time
TCHCL
Fall Time
EXTERNAL CLOCK DRIVE WAVEFORMS
Max
16 20
20
20
270849 – 15
Units
MHz
ns
ns
ns
ns
270849 – 16
13
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