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D82C54
+BOMPROGRAMMABLE INTERVAL TIMER
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ManufacturerAdvanced Micro Devices
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Mfr. Part #D82C54
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Datasheet D82C54 DataSheet
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Package CDIP-24
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In Stock334
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Specifications
| Attribute | Value |
| Supplier | Rochester Electronics, LLC |
| Package / Case | Bulk |
| Part Status | Obsolete |
| Type | Programmable Timer |
| Frequency | 8MHz |
| Voltage - Supply | 4.5V ~ 5.5V |
| Supply Current | 20 mA |
| Operating Temperature | -55°C ~ 125°C (TC) |
| Supplier Device Package | 24-CDIP |
Overview
Description
Each counter in the D82C54 is equipped with a control word register that allows the selection of different operational modes, enabling complex timing operations. The chip interfaces with microprocessors through a parallel bus for data exchange, and its counters can be read on-the-fly without disturbing the operation, which is beneficial for real-time applications. The D82C54 is commonly used in embedded systems, instrumentation, and other applications requiring precise timing and control functionalities.
Equivalent
Features
1. Three Independent Counters: The device includes three independent 16-bit counters, which can be used for various timing and counting applications.
2. Binary or BCD Counting: The counters can operate in either binary or Binary-Coded Decimal (BCD) modes, providing flexibility in different types of applications.
3. Multiple Modes of Operation: It supports six programmable modes, including interrupt-on-terminal-count, hardware- or software-triggered strobe, and square wave generation, enhancing versatility in timing applications.
4. Programmable: The counters are fully programmable, allowing developers to configure them according to specific needs through software.
5. Clock Inputs: Each counter has its own clock input, which allows for independent operation of each timer.
6. Commonly Used in Systems: It is often used for generating precise time delays, event counting, and in applications requiring cyclic operations like generating square waves.
7. Compatibility: The D82C54 is compatible with a variety of microprocessor systems, making it suitable for a wide range of applications.
These features make the D82C54 an essential component in timing and control applications within embedded systems.
Pinout
Key pins and their functions include:
- Data Bus (D0-D7): Used for data transfer between the CPU and the D82C54.
- Control Pins (CS, RD, WR): Enable chip selection, reading, and writing operations.
- Clock Inputs (CLK0-CLK2): Provide clock signals to the counters.
- Gate Inputs (GATE0-GATE2): Control the operation of the counters.
- Out Pins (OUT0-OUT2): Output signals from each counter.
The D82C54 is commonly used in various embedded applications for precise timing and counting operations, making it suitable for use in a wide range of microprocessor-based systems.