Motorola MC6840P Programmable Timer Module IC DIP-28 Used Pull

Motorola MC6840P 1.0 MHz PTM 28-Pin DIP Microprocessor Peripheral

Condition

Used equipment pull. Markings legible on package top: Motorola logo, MC6840P, and GG68524. Evaluation: Visual inspection only; function testing not performed.

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Product Overview

Motorola MC6840P programmable timer module in a 28-pin dual in-line package. Designed as a peripheral component for M6800-series microprocessors and compatible 8-bit bus architectures, the MC6840 provides subsystem timing, interval measurement, and event counting without continuous processor intervention.

Key Features

• 1.0 MHz bus frequency rating
• Three independent 16-bit binary down-counters
• 5.0 V nominal operating voltage
• Supports event counting, interval timing, pulse-width comparison, and square wave generation
• 28-pin plastic dual in-line package (DIP-28)

Applications

• Restoring legacy 6800 and 6809 microprocessor computer boards and industrial controllers
• Replacing failed timer modules on vintage arcade and synthesizer circuit boards
• Prototyping custom retrocomputing peripherals and timing circuits on breadboards or socketed boards

Frequently Asked Questions

What bus speed is the MC6840P rated for?

The standard MC6840P is rated for 1.0 MHz bus operation.

Are socket pins intact on this pulled unit?

Visual inspection confirms all 28 pins are present on the dual in-line package.

Why buy a single verified pull instead of an untested multi-pack?

You receive the specific photographed Motorola component rather than sorting through unverified bulk lots. Flat-rate shipping is $8, orders over $28 ship free, and packages depart our Idaho warehouse the same or next business day.

Vintage silicon keeps legendary systems counting right down to the clock cycle. Plug this classic timer in and get your retro hardware back up to speed.

Shipping? $8 flat rate, free once your order passes $28 - and it leaves the Idaho warehouse the same or next business day.