Microchip Technology ATF22LV10CQZ-30SU

Overview

ATF22LV10CQZ-30SU from Microchip Technology (formerly Atmel) is a low-voltage, electrically erasable programmable logic device (PLD) with 12 inputs, 10 I/O macrocells, and zero-power standby mode (25 µA max). It operates from 3.0V to 5.5V, delivers 30 ns propagation delay (tPD), supports industrial temperature range (–40°C to +85°C), and features Input Transition Detection (ITD) for automatic power-down in battery-powered systems.

For engineers reviewing the ATF22LV10CQZ-30SU datasheet, ATF22LV10CQZ-30SU pinout, ATF22LV10CQZ-30SU application, or ATF22LV10CQZ-30SU equivalent, key selection criteria include its 30 ns speed grade, TSSOP-24 green package (Pb/Halide-free/RoHS), zero-power ITD architecture, register preload capability, and compatibility with legacy 24-pin PAL designs.

Technical Context

The ATF22LV10CQZ-30SU implements a variable product-term architecture with 8–16 product terms per output, plus two global product terms for synchronous/asynchronous reset. Its patented Input Transition Detection circuit enables automatic entry into zero-power standby when inputs are idle, eliminating static current draw without external control logic.

Each of its 10 macrocells is configurable as registered or combinatorial, active-high or active-low, supporting emulation of most 24-pin PAL devices. The device includes internal pin-keeper circuits to retain last-driven logic states on inputs and I/Os, and integrates a security fuse to prevent unauthorized copying of programmed logic patterns.

Key Specifications

Pinout & Package

ATF22LV10CQZ-30SU is housed in a 24-lead, 4.4 mm wide, plastic Thin Shrink Small Outline Package (TSSOP), compliant with JEDEC MO-153 AD. This RoHS-compliant green package offers the smallest footprint among SPLD offerings and supports fine-pitch surface-mount assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable logic device applications.

Compared with ATF22LV10CQZ-30PU and ATF22LV10CQZ-30JI, the ATF22LV10CQZ-30SU delivers identical logic functionality and timing in the smallest package, enabling higher board density, better high-frequency signal integrity, and simplified automated assembly - critical for space-constrained IoT and automotive modules.

Availability

ATF22LV10CQZ-30SU is available at Aetrix Electronics and suitable for industrial automation, battery-powered edge sensors, legacy system upgrades, and automotive body electronics requiring stable component supply across extended product lifecycles.

Supply support for ATF22LV10CQZ-30SU 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

Microchip Technology acquired Atmel in 2016 and maintains full support for its legacy PLD portfolio, including design tools, programming hardware, and long-term supply assurance.

The ATF22LV10CQZ series belongs to Atmel's high-reliability SPLD product line, engineered specifically for low-power, reprogrammable glue logic in cost-sensitive industrial and automotive applications where PAL compatibility and Flash endurance are essential.

FAQ

What is the maximum clock frequency supported by the ATF22LV10CQZ-30SU?

The ATF22LV10CQZ-30SU supports a maximum operating frequency of 33.3 MHz under industrial conditions, derived from its 30 ns propagation delay (tPD) and 15 ns setup time (tS). This allows reliable use in 33 MHz synchronous systems with timing margin, and is verified across the full 3.0–5.5 V supply and –40°C to +85°C temperature range. The ATF22LV10CQZ-30SU achieves this without external timing components or configuration overhead.

Does the ATF22LV10CQZ-30SU require external pull-up resistors on its I/O pins?

No, the ATF22LV10CQZ-30SU includes internal pin-keeper circuits on all inputs and I/Os that actively hold the last-driven logic state, eliminating the need for external pull-up or pull-down resistors. This reduces BOM count, saves board space, and prevents static power consumption in un-driven states. The keepers are weak enough to be overridden by standard TTL or CMOS drivers, ensuring interoperability. This behavior applies to the ATF22LV10CQZ-30SU in all operating modes.

How does the Input Transition Detection (ITD) feature reduce power in the ATF22LV10CQZ-30SU?

The Input Transition Detection (ITD) circuit in the ATF22LV10CQZ-30SU monitors all 12 input pins and automatically places the device into zero-power standby mode (≤25 µA) whenever no transitions occur for >100 ns. Power resumes instantly upon the next input edge, with no software intervention or external control signals required. This dynamic power gating makes the ATF22LV10CQZ-30SU ideal for intermittent-sensing applications where the ATF22LV10CQZ-30SU spends >95% of time idle.

Can the ATF22LV10CQZ-30SU replace an obsolete PAL22V10 in an existing design?

Yes, the ATF22LV10CQZ-30SU is functionally and pin-compatible with the PAL22V10 family, offering identical 22-input/10-output architecture, macrocell structure, and 24-pin DIP/SOIC/TSSOP footprints. It adds Flash reprogrammability, lower voltage operation (3.0–5.5 V), zero-power ITD, and enhanced reliability (10,000 write cycles, 20-year retention). No PCB changes are needed when substituting ATF22LV10CQZ-30SU for PAL22V10 in TSSOP-24 layouts.

What programming hardware is required for the ATF22LV10CQZ-30SU?

The ATF22LV10CQZ-30SU is programmed using standard CMOS PLD programmers supporting JEDEC file format, such as the Microchip (Atmel) ATDH1200, BP Microsystems Universal Programmers, or third-party tools like Xeltek SuperPro. Programming requires only VCC, GND, and JTAG or parallel interface signals - no high-voltage programming supply is needed. The ATF22LV10CQZ-30SU supports in-system programming via dedicated ISP pins and retains configuration after power loss.