82C54 Datasheet, PDF (18/18 Pages) Intel Corporation – CHMOS PROGRAMMABLE INTERVAL TIMER

82C54
CLOCK AND GATE
A C TESTING INPUT OUTPUT WAVEFORM
INPUT OUTPUT
231244 – 17
Last byte of count being written
A C TESTING LOAD CIRCUIT
231244 – 18
A C Testing Inputs are driven at 2 4V for a logic ‘‘1’’ and 0 45V
for a logic ‘‘0 ’’ Timing measurements are made at 2 0V for a logic
‘‘1’’ and 0 8V for a logic ‘‘0 ’’
REVISION SUMMARY
The following list represents the key differences be-
tween Rev 005 and 006 of the 82C54 Data Sheet
1 References to and specifications for the 8 MHz
82C54 are removed Only the 10 MHz 82C52-2
remains in production
231244 – 19
C_L e 150 pF
C_L includes jig capacitance
18