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TM
March 1997
82C54
CMOS Programmable Interval Timer
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
- C82C54 . . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to +70
o
C
- I82C54. . . . . . . . . . . . . . . . . . . . . . . . . .-40
o
C to +85
o
C
- M82C54. . . . . . . . . . . . . . . . . . . . . . . .-55
o
C to +125
o
C
Description
The Intersil 82C54 is a high performance CMOS Program-
mable 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
Pinouts
82C54 (PDIP, CERDIP, SOIC)
TOP VIEW
82C54 (PLCC/CLCC)
TOP VIEW
1
2
3
4
5
6
7
8
9
10
11
12
16
17
18
19
20
21
22
23
24
15
14
13
D7
D6
D5
D4
D3
D2
D1
D0
CLK 0
OUT 0
GATE 0
GND
VCC
RD
CS
A1
A0
OUT 2
CLK 1
GATE 1
OUT 1
WR
CLK 2
GATE 2
GND
NC
OUT 1
GATE 1
CLK 1
OUT 0
GATE 0
D7
NC
VCC
WR
RD
D5
D6
CS
A1
A0
CLK2
NC
GATE 2
OUT 2
1234
5
6
7
8
9
10
11
12 13 14 15 16 17 18
19
20
21
22
23
24
25
262728
D3
D2
D1
D0
D4
NC
CLK 0
FN2970.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
| Intersil (and design) is a trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
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