Microchip Technology AT22LV10L-25PC

Overview

AT22LV10L-25PC from Atmel is a low-voltage, UV-erasable, reprogrammable PLD based on the 22V10 architecture, delivering 25 ns maximum propagation delay at V_CC = 3.0V, 1 mA typical ICC at 3.3V, and full CMOS output levels. It features 10 I/O pins, 2 dedicated inputs (CLK/IN and IN), and supports synchronous preset/asynchronous reset for state machine initialization in battery-powered digital control systems.

For engineers reviewing the AT22LV10L-25PC datasheet, AT22LV10L-25PC pinout, AT22LV10L-25PC application, or AT22LV10L-25PC equivalent, this device is selected for low-power logic replacement, glue logic consolidation, and register-intensive control functions where DC power budget and UV reprogrammability are critical design constraints.

Technical Context

The AT22LV10L-25PC implements a fixed 22-input, 10-output PLD 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. Its register preload capability enables deterministic test-state injection via I/O pins under 11.5–13 V applied to pin 8 (PDIP).

It operates across 3.0V–5.5V supply range with ±10 µA input/output leakage, 200 mA latchup immunity, and 2000V HBM ESD protection. Power-up reset asserts low on all registers when V_CC crosses 2.5V, requiring monotonic V_CC ramp and adherence to t_PR = 600–1000 ns timing before clock activation.

Key Specifications

Pinout & Package

AT22LV10L-25PC is supplied in a 24-lead, 0.300" wide plastic dual inline package (PDIP), JEDEC MS-011 AB compliant, with 0.600" body width and 0.300" lead pitch. Pin 1 is marked by a notch or dot; pin numbering proceeds counterclockwise from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT22LV10-25PC and AMD PALCE22V10-25JC, the AT22LV10L-25PC uniquely delivers sub-mA quiescent current at 3.3V while retaining UV reprogrammability and 22V10 compatibility-making it the sole option for portable, upgradable, and low-power logic integration.

Availability

AT22LV10L-25PC is available at Aetrix Electronics and suitable for industrial motor control, portable medical instrumentation, legacy system emulation, and test equipment signal conditioning requiring stable component supply across extended production lifecycles.

Supply support for AT22LV10L-25PC 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) designed high-reliability, low-power microcontrollers and programmable logic devices for embedded systems, emphasizing ease of integration and long-term manufacturability.

The AT22LV10L series was developed specifically to replace obsolete 22V10 PLDs in battery-powered and industrial control applications, combining UV reprogrammability with sub-mA static current and 3.0–5.5V flexibility.

FAQ

What is the maximum operating voltage for the AT22LV10L-25PC?

The AT22LV10L-25PC supports a supply voltage range of 3.0V to 5.5V DC. Operation above 5.5V violates absolute maximum ratings and risks permanent damage. The device maintains specified timing and leakage performance across this full range, enabling direct use with both 3.3V and 5V system rails without level translation. AT22LV10L-25PC's V_IL and V_IH thresholds scale accordingly to ensure reliable interfacing.

Does the AT22LV10L-25PC require an external reset circuit?

No, the AT22LV10L-25PC incorporates an internal power-up reset circuit that forces all ten registers to a low state when V_CC crosses 2.5V. This eliminates the need for external reset ICs in most designs. However, proper V_CC ramp monotonicity and adherence to t_PR = 600–1000 ns before clock activation are mandatory. AT22LV10L-25PC's reset behavior is fully documented in its functional logic diagram and AC characteristics table.

Can the AT22LV10L-25PC be reprogrammed in-system?

No, the AT22LV10L-25PC is UV-erasable and requires removal from the PCB and exposure to 2537 Å ultraviolet light for full fuse array erasure. It does not support in-system programming (ISP) or JTAG-based reconfiguration. Reprogramming must occur in a dedicated UV eraser chamber delivering ≥12,000 µW/cm² intensity for ≥20 minutes. AT22LV10L-25PC's package includes a quartz window for this purpose, unlike one-time-programmable (OTP) variants.

What is the meaning of "L" in AT22LV10L-25PC?

The "L" suffix in AT22LV10L-25PC denotes the low-power variant of the AT22LV10 family, distinguished by reduced I_CC (1 mA typical at 3.3V vs. 4 mA for AT22LV10-25PC) and optimized CMOS output drive characteristics. It retains identical pinout, logic architecture, and UV erasability. AT22LV10L-25PC achieves this through process and circuit-level enhancements that lower static current without sacrificing speed or noise immunity.

Is the AT22LV10L-25PC compatible with standard 22V10 development tools?

Yes, the AT22LV10L-25PC uses the exact same 22V10 logic architecture, pin configuration, and JEDEC-standard fuse map format. It is fully supported by industry-standard PLD development tools including Data I/O Universal Programmers, Logical Devices LPA Series, and third-party ABEL/HDL compilers targeting 22V10. AT22LV10L-25PC requires no toolchain modification beyond selecting the correct device speed grade and low-power variant flag.