The Rochester Electronics P82C54-2 is a programmable interval timer/counter designed for a wide array of timing and control applications within microcomputer systems. As a fully static CMOS device, the P82C54-2 is noted for its low power consumption and high reliability. It provides three independent 16-bit counters, each capable of being configured for different operating modes, including interval timing, event counting, and frequency generation.

Applications

• Frequency Synthesis
• Motor Speed Control
• Real-Time Clock Systems
• Pulse Width Modulation (PWM)
• Embedded Control Systems

Features

• Three Independent 16-Bit Counters: Allows for simultaneous management of multiple timing functions.
• Six Programmable Operating Modes: Offers flexibility in configuring each counter for various timing tasks.
• Binary and BCD Counting: Supports both binary and Binary Coded Decimal (BCD) counting formats.
• Read/Write Capability: Enables dynamic adjustments of the counter values and modes during operation.
• Fully Static Operation: Reduces power consumption, making it suitable for battery-powered applications.

Benefits

• Precise Timing Control: Provides accurate timing signals for demanding applications.
• Versatility: Adaptable to a wide range of timing and control functions due to its programmable modes.
• Low Power Consumption: Ideal for energy-sensitive systems and battery-powered devices.
• Enhanced System Reliability: Manufactured by Rochester Electronics, ensuring high quality and long-term availability.
• Simplified Integration: Reduces the need for complex external timing circuitry, simplifying system design.

Additional Details

The P82C54-2 is accessed via the system bus, where control words and data are written to configure the device and load initial counter values. The operating modes include interval timer, rate generator, square wave generator, software-triggered strobe, hardware-triggered strobe, and programmable one-shot. Its fully static design ensures that the device retains its state even when the clock signal is stopped, making it suitable for low-power applications. The device typically operates on a 5V power supply. The P82C54-2 from Rochester Electronics is a reliable alternative to original manufacturer parts, ensuring continuous support for legacy systems and new designs alike.