Microchip Technology AT22LV10-25JI

Overview

AT22LV10-25JI from Atmel is a low-voltage UV-erasable programmable logic device (PLD) based on the 22V10 architecture, delivering 25 ns maximum propagation delay at V_CC = 3.0V, operating across 3.0V–5.5V supply range, and rated for industrial temperature (–40°C to +85°C); it supports 10 I/O pins with bidirectional buffers, synchronous preset, and asynchronous reset - used in legacy control logic, glue logic replacement, and FPGA companion state machines.

For engineers reviewing the AT22LV10-25JI datasheet, AT22LV10-25JI pinout, AT22LV10-25JI application, or AT22LV10-25JI equivalent, this page provides verified timing parameters, industrial-grade DC/AC specs, PLCC-28 package mapping, reprogrammability assurance, and direct alternatives for 22V10-compatible logic design continuity.

Technical Context

The AT22LV10-25JI implements a fixed 22-input × 10-output macrocell architecture with eight to sixteen product terms per output, plus two global product terms for synchronous preset and asynchronous reset shared across all ten registers. All registers power-up cleared and support asynchronous preload via dedicated voltage-level signaling on I/O pins.

It uses low-power CMOS technology with ±10 µA max input/output leakage, 2000V HBM ESD protection, and 200 mA latchup immunity. Logic inputs and outputs are both CMOS- and TTL-compatible, enabling direct interfacing with mixed-voltage systems without level-shifting.

Key Specifications

Pinout & Package

AT22LV10-25JI is supplied in a 28-lead Plastic J-Leaded Chip Carrier (PLCC-28) package, JEDEC MS-018 AB compliant, with 1.27 mm pitch and exposed die pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT22LV10-25JC and AT22LV10L-25JI, the AT22LV10-25JI uniquely balances industrial temperature resilience, 25 ns timing performance, and moderate power consumption - making it the default choice for embedded control where reliability trumps ultra-low power or cost-only optimization.

Availability

AT22LV10-25JI is available at Aetrix Electronics and suitable for industrial control sequencing, legacy system glue logic, and automotive body electronics requiring stable component supply across extended product lifecycles.

Supply support for AT22LV10-25JI 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 (now part of Microchip Technology) is a fabless semiconductor company specializing in microcontrollers, nonvolatile memory, and programmable logic solutions for industrial, automotive, and consumer applications.

The AT22LV10 family was designed as a drop-in UV-erasable replacement for industry-standard 22V10 PLDs, targeting designers needing field-reprogrammable logic with industrial temperature support and low-voltage compatibility.

FAQ

What is the maximum clock frequency supported by the AT22LV10-25JI?

The AT22LV10-25JI supports up to 34.5 MHz in external feedback mode (1/(t_S + t_CO)), 47.6 MHz in internal feedback mode, and 83.3 MHz in no-feedback operation. These values are guaranteed across the full industrial temperature range and 3.0V–5.5V supply, with t_S = 12 ns and t_CO = 17 ns max at V_CC = 3.0V. The AT22LV10-25JI's timing is fully characterized - not derived from typical values.

Does the AT22LV10-25JI require an external UV eraser for reprogramming?

Yes, the AT22LV10-25JI is a UV-erasable PLD and requires exposure to 253.7 nm ultraviolet light for full array erasure - minimum 20 minutes at 12,000 µW/cm² intensity. It does not support in-system or electrical reprogramming. The AT22LV10-25JI must be removed from the PCB and placed under a certified UV eraser; no on-board erase circuitry exists.

Can the AT22LV10-25JI operate reliably at 3.0V supply voltage?

Yes, the AT22LV10-25JI is fully specified down to 3.0V: t_PD = 25 ns max, V_IL ≤ 0.6V, V_IH ≥ 2.0V, and I_CC = 20/50 mA (typ/max) at V_CC = 3.6V. Its 3.0V–5.5V range allows direct integration with single-cell Li-ion or regulated 3.3V rails without level translation - confirmed in the official Atmel AC Characteristics table for AT22LV10-25JI.

What is the function of Pin 10 on the AT22LV10-25JI PLCC package?

Pin 10 on the AT22LV10-25JI PLCC package is the Preload Enable pin. Applying 11.5–13V to this pin (while holding other inputs stable) activates asynchronous register preload mode, allowing each of the ten registers to be forced high or low via VIH/VIL on corresponding I/O pins. This function is documented in the "Preload of Registered Outputs" section of the AT22LV10(L) datasheet Rev. 0190E.

Is the AT22LV10-25JI pin-compatible with standard 22V10 devices?

Yes, the AT22LV10-25JI maintains identical pinout, logic architecture, and macrocell structure to the industry-standard 22V10, including 22 inputs, 10 I/Os, and dual global product terms. Its PLCC-28 footprint matches 22V10-PLCC packages, enabling direct socket replacement - provided the target system operates within the AT22LV10-25JI's 3.0V–5.5V supply and industrial temperature envelope.