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TN82C54-2
+NomenclaturePROGRAMMABLE TIMER, 3 TIMER(S)
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FabricantRochester Electronics LLC
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Pièce fabricant #TN82C54-2
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Fiche technique TN82C54-2 DataSheet
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En stock5762
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Spécifications
| Attribut | Valeur |
| Supplier | Rochester Electronics, LLC |
| Package | 11 |
| Series | Bulk |
| Type | Active |
Présentation
Description
Each counter on the TN82C54-2 can be programmed to operate in six different modes, providing flexibility in generating time delays, counting events, or controlling square wave outputs. The device operates on a variety of frequencies and can interface directly with the CPU via a control bus, allowing for seamless integration into digital systems.
Typically housed in a 24-pin dual in-line package (DIP), the TN82C54-2 has a wide range of applications, including in embedded systems, real-time clocks, and instrumentation. Its versatility and reliability make it a staple component for engineers dealing with timing and control in microprocessor-based systems.
Equivalent
1. Intel 82C54
2. AMD AM9513
3. NEC µPD8254
4. Intersil 82C54
5. Renesas (formerly Mitsubishi) M5M82C54
6. Harris/Intersil 82C54
These chips generally offer similar functionality with variations in performance and specifications depending on the manufacturer. Always check datasheets for precise compatibility.
Features
1. Three 16-bit Counters: The device consists of three independent 16-bit counters, which can be used in various modes for counting operations.
2. Six Programmable Modes: Supports multiple modes including interrupt on terminal count, hardware triggered one-shot, rate generator, square wave generator, software triggered strobe, and hardware triggered strobe.
3. Binary or BCD Counting: It allows counting in both binary and Binary-Coded Decimal (BCD) formats.
4. Compatible with Microprocessors: Commonly used with Intel microprocessors and is compatible with many microprocessor interfaces.
5. Clock Frequency: Operates with a clock frequency of up to 8 MHz.
6. Real-time Applications: Suitable for real-time clock generation, event counting, and pulse-width modulation.
7. Pin Configuration: Typically comes in a 24-pin dual in-line package (DIP) or similar form factor.
This chip is widely used in various applications where precise timing and counting are essential.
Pinout
Pin Count:
The TN82C54-2 has a 24-pin dual in-line package (DIP).
Key Pin Functions:
- Data Bus (D0-D7): 8 pins used for data transfer between the microprocessor and the 8254.
- Chip Select (CS): Activates the chip for communication.
- Read (RD) and Write (WR): Control the data flow direction to or from the microprocessor.
- Address Lines (A0, A1): Select one of the internal registers or counters.
- Clock Inputs (CLK0, CLK1, CLK2): Clock signals for each of the three counters.
- Gate Inputs (GATE0, GATE1, GATE2): Control signals that enable or disable the counters.
- Output Lines (OUT0, OUT1, OUT2): Output from the counter, providing the timer signal.
Each of the three counters is 16 bits wide and can be programmed in various modes to count events, generate accurate time delays, or produce square wave signals.
Manufacturer
Application
1. Real-time Clock: Managing time-related tasks in embedded systems.
2. Event Counter: Counting occurrences of specific events in digital systems.
3. Frequency Divider: Generating clock signals of different frequencies.
4. Pulse Width Modulation (PWM): Controlling power to devices like motors and LEDs.
5. Interrupt Generation: Providing periodic interrupts for scheduling tasks.
6. System Delays: Creating precise time delays in digital circuits.
These functionalities make it suitable for use in computing, industrial automation, and instrumentation.