®
82C54
Data Sheet
July 11, 2005
FN2970.4
CMOS Programmable Intervel Timer
The Intersil 82C54 is a high performance CMOS
Programmable Interval Timer manufactured using an
advanced 2 micron CMOS process.
The 82C54 has three independently programmable and
functional 16-bit counters, each capable of handling clock
input frequencies of up to 8MHz (82C54) or 10MHz
(82C54-10) or 12MHz (82C54-12).
The high speed and industry standard configuration of the
82C54 make it compatible with the Intersil 80C86, 80C88,
and 80C286 CMOS microprocessors along with many
other industry standard processors. Six programmable
timer modes allow the 82C54 to be used as an event
counter, elapsed time indicator, programmable one-shot,
and many other applications. Static CMOS circuit design
insures low power operation.
The Intersil advanced CMOS process results in a significant
reduction in power with performance equal to or greater than
existing equivalent products.
Features
• 8MHz to 12MHz Clock Input Frequency
• Compatible with NMOS 8254
- Enhanced Version of NMOS 8253
• Three Independent 16-Bit Counters
• Six Programmable Counter Modes
• Status Read Back Command
• Binary or BCD Counting
• Fully TTL Compatible
• Single 5V Power Supply
• Low Power
- ICCSB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10µA
- ICCOP . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA at 8MHz
• Operating Temperature Ranges
- CX82C54 . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to +70
o
C
- IX82C54 . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to +85
o
C
- MD82C54 . . . . . . . . . . . . . . . . . . . . . . -55
o
C to +125
o
C
•
Pb-Free Plus Anneal Available (RoHS Compliant)
Pinouts
82C54 (PDIP, CERDIP)
TOP VIEW
D7 1
D6 2
D5 3
D4 4
D3 5
D2 6
D1 7
D0 8
CLK 0 9
OUT 0 10
GATE 0 11
GND 12
24 VCC
23 WR
22 RD
21 CS
20 A1
19 A0
18 CLK 2
17 OUT 2
16 GATE 2
15 CLK 1
14 GATE 1
13 OUT 1
D4 5
D3 6
D2 7
D1 8
D0 9
CLK 0 10
NC 11
82C54 (PLCC/CLCC)
TOP VIEW
VCC
NC
WR
D5
D6
D7
RD
25 NC
24 CS
23 A1
22 A0
21 CLK2
20 OUT 2
19 GATE 2
CLK 1
4
3
2
1
28 27 26
12
OUT 0
13 14 15 16 17 18
GND
NC
OUT 1
GATE 0
GATE 1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003, 2005. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
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