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Intel P82C54-2

Analog Timer Circuit

Ovaga Certification

Brands: Intel Corp

Mfr.Part #: P82C54-2

Datasheet: P82C54-2 Datasheet (PDF)

Package/Case: DIP-24

Product Type: Integrated Circuits (ICs)

RoHS Status:

Stock Condition: 3277 pcs, New Original

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P82C54-2 General Description

P82C54-2 is a programmable interval timer/counter chip that was manufactured by Intel Corporation. It is a member of the MCS-85 family of microcontrollers and is widely used in embedded systems and industrial automation applications.



  • It has three independent 16-bit counters, which can be programmed to function either as timers or as event counters.
  • It has two modes of operation: the mode 0 is a single-shot mode, while the mode 2 is an interval mode.
  • It has a programmable prescaler, which can divide the input clock frequency by a factor of 1, 2, 4, 8, 16, 32, 64, or 128.
  • It has a programmable output control, which can generate a square wave with a programmable duty cycle or can operate as a pulse generator.
  • It has a read-back capability, which allows the microcontroller to read the current count value of each counter.


  • Generating accurate time delays and pulse widths in embedded systems.
  • Controlling the frequency of periodic events, such as motor speed or signal processing.
  • Measuring the duration of external events, such as pulse widths or intervals.
  • Implementing real-time clocks and timers in electronic devices.
Intel Corp Inventory


Parameter Value Parameter Value
Rohs Code No Part Life Cycle Code Active
Ihs Manufacturer ROCHESTER ELECTRONICS LLC Package Description DIP-24
Reach Compliance Code unknown ECCN Code EAR99
HTS Code 8542.39.00.01 Additional Feature 6 PROGRAMMABLE MODES
Bus Compatibility 10MHZ 8086/88; 10MHZ 80186/188 Clock Frequency-Max 10 MHz
External Data Bus Width 8 Information Access Method PARALLEL, DIRECT ADDRESS
JESD-30 Code R-PDIP-T24 Number of Bits 16
Number of Terminals 24 Number of Timers 3
Operating Temperature-Max 70 °C Operating Temperature-Min
Package Body Material PLASTIC/EPOXY Package Code DIP
Package Shape RECTANGULAR Package Style IN-LINE
Peak Reflow Temperature (Cel) NOT SPECIFIED Supply Current-Max 20 mA
Supply Voltage-Max 5.5 V Supply Voltage-Min 4.5 V
Supply Voltage-Nom 5 V Surface Mount NO
Technology CMOS Temperature Grade COMMERCIAL
Terminal Form THROUGH-HOLE Terminal Position DUAL
Time@Peak Reflow Temperature-Max (s) NOT SPECIFIED


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Equivalent Parts

For the P82C54-2 component, you may consider these replacement and alternative parts:

Part Number




Part Number:  Harris/Intersil



Description:   82C54

Part Number:  National



Description:   Semiconductor INS8254

Part Number:  NEC



Description:   uPD8254A.

Datasheet PDF

Preliminary Specification P82C54-2 PDF Download

Key points

  • The P82C54-2 chip is a programmable interval timer IC (Integrated Circuit) developed by Intel. It is commonly used for timing and counting applications in various electronic devices like computers and embedded systems. The chip offers three 16-bit counters that can be programmed independently, making it suitable for tasks such as generating precise time delays, generating square wave signals, and measuring time intervals.
  • Equivalent

    The equivalent products of the P82C54-2 chip are the 8254, 82C54, and 82C54-2.
  • Features

    The P82C54-2 is a programmable interval timer designed for microprocessor systems. It features five programmable modes, an 8-bit binary counter, three independent 16-bit programmable timers, status flags, and serial data output. It operates on a single +5V power supply and is widely used in various applications requiring precise timing functions.
  • Pinout

    The P82C54-2 is a programmable interval timer that has 24 pins. It is used to generate timing and control signals in various applications such as measuring time intervals, generating frequency signals, and implementing real-time operations in microprocessor systems.
  • Manufacturer

    The P82C54-2 is manufactured by Intel Corporation. Intel is a multinational semiconductor company.
  • Application Field

    The P82C54-2 is a programmable interval timer chip commonly used in various applications, including microcontroller systems, industrial control systems, and embedded systems. It can be used for tasks such as generating precise timing signals, event counting, time delays, and time measurement.
  • Package

    The P82C54-2 chip is available in a 28-pin DIP (Dual Inline Package) form. The package size is measured at approximately 0.4 inches in width and 0.6 inches in length.

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