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产品描述
CMOS Programmable Interval Timer
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Below is the parameter table and instructions for the CS82C54-10 Programmable Interval Timer (PIT).
| Parameter | Symbol | Conditions | Min | Typical | Max | Unit |
|---|---|---|---|---|---|---|
| Operating Voltage | Vcc | Continuous | 4.75 | 5.0 | 5.25 | V |
| Maximum Current | Icc | Continuous | - | 150 | - | mA |
| Output High Level Voltage | VOH | IOH = -1.6 mA | 2.4 | 3.5 | 4.5 | V |
| Output Low Level Voltage | VOL | IOL = 16 mA | 0.4 | 0.5 | 0.6 | V |
| Input High Level Voltage | VIH | - | 2.0 | 3.5 | 5.0 | V |
| Input Low Level Voltage | VIL | - | 0.0 | 0.8 | 1.5 | V |
| Maximum Operating Frequency | fmax | - | - | 10 | - | MHz |
| Minimum Pulse Width | tPW | - | 50 | - | - | ns |
| Setup Time | tSU | - | 25 | - | - | ns |
| Hold Time | tH | - | 25 | - | - | ns |
| Propagation Delay | tPD | - | 50 | 100 | 150 | ns |
The CS82C54-10 is a programmable interval timer that can be used to generate precise time intervals or periodic signals. It consists of three independent 16-bit counters.
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | CLK0 | Clock input for Counter 0 |
| 3 | OUT0 | Output from Counter 0 |
| 4 | GATE0 | Gate input for Counter 0 |
| 5 | CLK1 | Clock input for Counter 1 |
| 6 | OUT1 | Output from Counter 1 |
| 7 | GATE1 | Gate input for Counter 1 |
| 8 | CLK2 | Clock input for Counter 2 |
| 9 | OUT2 | Output from Counter 2 |
| 10 | GATE2 | Gate input for Counter 2 |
| 11 | RD | Read control input |
| 12 | WR | Write control input |
| 13 | CS | Chip select input |
| 14 | A0 | Address input 0 |
| 15 | A1 | Address input 1 |
| 16 | D0-D7 | Data bus (8-bit) |
| 17 | Vcc | Power supply |
The CS82C54-10 supports six operating modes for each counter:
The control word register is used to program the operating mode and other parameters of the counters.
| Bit | Function |
|---|---|
| 7 | BCD/ Binary (1 = BCD, 0 = Binary) |
| 6-5 | Mode (00 = Mode 0, 01 = Mode 1, 10 = Mode 2, 11 = Mode 3, 100 = Mode 4, 101 = Mode 5) |
| 4 | Counter Select (1 = Counter 2, 0 = Counter 1 or 0) |
| 3 | Read/Write (1 = Read, 0 = Write) |
| 2-0 | Counter Select (000 = Counter 0, 001 = Counter 1, 010 = Counter 2, 011 = All Counters) |
Select Counter and Mode:
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RequiredControl Word: 00110000 (0x30)
Load Initial Count:
Write 0x10 to D0-D7 (LSB)
Write 0x27 to D0-D7 (MSB)
Start the Counter:
This should provide a comprehensive overview of the CS82C54-10 and how to use it effectively.
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CS82C54-10
CS82C54-10 has several brands around the world that may have alternate names for CS82C54-10 due to regional differences or acquisition. CS82C54-10 may also be known as the following names:
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