Microchip Technology ATF22V10B-15PC

Overview

ATF22V10B-15PC from Atmel is a high-performance, electrically erasable CMOS programmable logic device (PLD) with 22 inputs, 10 macrocells, and 10 I/O pins. It features 15 ns maximum propagation delay (tPD), 8 ns clock-to-output (tCO), and operates at 5V ±10% over industrial temperature range (–40°C to +85°C) in 24-pin DIP package. It serves as a reprogrammable logic replacement for TTL SSI/MSI in control logic, state machines, and address decoding.

For engineers reviewing the ATF22V10B-15PC datasheet, ATF22V10B-15PC pinout, ATF22V10B-15PC application, or ATF22V10B-15PC equivalent, key selection criteria include tPD/tCO timing compliance, Flash-based reprogrammability, internal pull-up resistor support, PCI-compliant operation, and military-grade reliability metrics including 20-year data retention and 100 erase/write cycles.

Technical Context

The ATF22V10B-15PC implements a fixed architecture PLD with 22 input pins feeding a programmable AND-OR logic array and 10 macrocells-each configurable as registered or combinatorial output. Its Flash-based configuration enables in-system reprogramming without UV erasure or external voltage programming.

It supports synchronous and asynchronous register control, preload of registered outputs via JEDEC file, and power-up reset with 600–1000 ns reset time triggered at VCC ≥ 3.8 V. Input and I/O pins integrate weak internal pull-ups, ensuring defined logic states when undriven.

Key Specifications

Pinout & Package

ATF22V10B-15PC is supplied in a 24-pin plastic dual-in-line package (PDIP), 0.300" wide, with standard industry pinout compatible with legacy 22V10 devices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PLD applications.

Compared with AMD AM22V10C-15JC and Lattice GAL22V10D-15LP, the ATF22V10B-15PC delivers Flash-based reprogrammability without UV exposure, lower standby power (65 mA), and guaranteed 20-year data retention-making it optimal for industrial systems requiring long-life, field-upgradable logic.

Availability

ATF22V10B-15PC is available at Aetrix Electronics and suitable for industrial control logic, PCI interface design, legacy system emulation, and automated test equipment requiring stable component supply and long-term lifecycle support.

Supply support for ATF22V10B-15PC includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Atmel Corporation was a U.S.-based semiconductor company specializing in microcontrollers, nonvolatile memory, and programmable logic devices before its acquisition by Microchip Technology in 2016.

The ATF22V10B product line was designed to deliver reprogrammable, Flash-based alternatives to one-time-programmable PALs for industrial and military control applications requiring field update capability and high reliability.

FAQ

What is the maximum operating frequency supported by the ATF22V10B-15PC?

The ATF22V10B-15PC supports an external feedback maximum frequency of 55.5 MHz, calculated as 1/(tS + tCO) = 1/(10 ns + 8 ns). This applies to registered logic paths using internal feedback; combinatorial paths are limited by tPD (15 ns), yielding up to ~66 MHz for non-clocked logic. The device does not include an internal oscillator and relies on external clock sources.

Does the ATF22V10B-15PC require external pull-up resistors on input or I/O pins?

No, the ATF22V10B-15PC integrates internal weak pull-up resistors on all IN and I/O pins. These ensure defined logic-high states when pins are left floating, eliminating the need for external pull-ups in most bus-hold or unused-input scenarios. External drivers can easily override them, maintaining full TTL/CMOS compatibility.

Can the ATF22V10B-15PC be reprogrammed in-circuit without removing it from the PCB?

Yes, the ATF22V10B-15PC supports in-system programming (ISP) via standard PLD programmers using the JEDEC file format. Its Flash memory architecture allows full reconfiguration while soldered on the board, provided the programming voltage (VPP) and control signals are accessible through dedicated programming headers or boundary-scan interfaces.

What is the purpose of the 64-bit user signature memory in the ATF22V10B-15PC?

The 64-bit user signature memory in the ATF22V10B-15PC provides non-volatile, unsecured storage that remains readable even after the security fuse is programmed. It is commonly used to store firmware version IDs, manufacturing lot codes, calibration constants, or traceability data-enabling field diagnostics and supply chain verification without compromising programmed logic confidentiality.

How does the power-up reset function work in the ATF22V10B-15PC?

The ATF22V10B-15PC performs automatic power-up reset when VCC crosses the VRST threshold (3.8–4.5 V). All registers initialize to low state after a 600–1000 ns delay. For reliable operation, VCC must rise monotonically, and input setup times must be met before the first clock edge; this ensures deterministic state machine startup in control applications using the ATF22V10B-15PC.