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The 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, 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.
82C54 Pinout
82C54 Pin Configuration
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | D7-D0 | Data Pins |
| 2 | CLK 0 | Clock Pin 0 |
| 3 | OUT 0 | Output Pin 0 |
| 4 | Gate 0 | Gate Pin 0 |
| 5 | GND | Ground Pin |
| 6 | OUT 1 | Output Pin 1 |
| 7 | Gate 1 | Gate Pin 1 |
| 8 | CLK 1 | Clock Pin 1 |
| 9 | Gate 2 | Gate Pin 2 |
| 10 | OUT 2 | Output Pin 2 |
| 11 | CLK 2 | Clock Pin 2 |
| 19-20 | A0-A1 | Port A |
| 21 | CS | Chip Select |
| 22 | RD | Read Pin |
| 23 | WR | Write Pin |
| 24 | VCC | Supply Voltage |
82C54 Key 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
Application
- Time indicator
- Programmable one-shot
You can download this datasheet for 82C54 Programmable Interval Timer – Datasheet from the link given below:
