Specifications
SKU: 523956
CMOS Programmable Interval Timer
Parameter | Description | Value | Unit |
---|---|---|---|
Part Number | - | ID82C54 | - |
Function | - | Programmable Interval Timer (PIT) | - |
Operating Voltage | Supply Voltage Range | 4.75 to 5.25 | V |
Operating Temperature | Industrial Temperature Range | -40 to +85 | °C |
Clock Frequency | Maximum Input Clock Frequency | 10 | MHz |
Resolution | Minimum Timer Resolution | 100 | ns |
Counters | Number of Independent Counters | 3 | - |
Counter Width | Bit Width of Each Counter | 16 | bits |
Modes of Operation | Available Modes for Each Counter | 6 | - |
Output | Output Signal Types | Square Wave, One-Shot, Rate Generator, etc. | - |
Power Consumption | Maximum Power Consumption | 200 | mW |
Package | Package Type | DIP-24 | - |
Instructions for Use
Power Supply:
- Connect the Vcc pin to a 5V power supply within the range of 4.75V to 5.25V.
- Connect the GND pin to ground.
Clock Input:
- Connect an external clock source to the CLK pins of each counter. The maximum frequency is 10 MHz.
Reset:
- Apply a low pulse to the RST pin to reset all counters.
Programming:
- Use the CS (Chip Select), RD (Read), WR (Write), and A0, A1 (Address) pins to program the counters.
- Write the desired mode and initial count values to the appropriate registers.
Modes of Operation:
- Mode 0 (Interrupt on Terminal Count): Generates an interrupt when the counter reaches zero.
- Mode 1 (Hardware Retriggerable One-Shot): Generates a single pulse of specified duration.
- Mode 2 (Rate Generator): Generates a continuous square wave.
- Mode 3 (Square Wave Mode): Generates a square wave with a 50% duty cycle.
- Mode 4 (Software Triggered Strobe): Generates a pulse when the counter reaches zero.
- Mode 5 (Hardware Triggered Strobe): Generates a pulse when the counter reaches zero and a trigger is applied.
Output:
- The OUT pins provide the output signals based on the selected mode and programmed values.
Reading Status:
- Use the RD pin to read the current status or count value from the counters.
Interfacing:
- Ensure proper interfacing with the microprocessor or microcontroller for control and data transfer.
Decoupling Capacitors:
- Place decoupling capacitors close to the Vcc and GND pins to filter out noise and ensure stable operation.
Handling:
- Handle the IC with care to avoid static damage. Use appropriate ESD protection measures.
For detailed programming and timing diagrams, refer to the datasheet provided by the manufacturer.
(For reference only)Inquiry - ID82C54