Microchip Technology AT27C020-90JC

Mfr. Part

AT27C020-90JC

Manufacturer

Micrel / Microchip Technology

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Detailed Description

2 Mbit EPROM one-time programmable device

Organization 256K x 8, parallel interface

Read supply voltage 4.5 V to 5.5 V, 5 V logic compatible

Access time 90 ns for fast reads

Commercial operating temperature 0 to 70 C

Package 32-PLCC J-leaded surface mount, body 13.97 x 11.43 mm

Base product number AT27C020, supplied in tubes

RoHS status non-compliant legacy leaded device

Stock available 1332 units

Key Features

Non-volatile memory retains data without power

2 Mbit capacity in 256K x 8 format

90 ns read speed supports many legacy CPUs and buses

Parallel bus for straightforward 8-bit data interfacing

EPROM OTP technology windowless plastic package, one-time programmable

5 V read operation VCC range 4.5 V to 5.5 V

Surface-mount 32-PLCC with J-leads, widely socketed and solderable

Commercial temperature range 0 to 70 C

Standard control signals CE and OE with typical EPROM PGM VPP for programming

Key Advantages

Drop-in compatibility for many mature 5 V systems

Simple, well-known interface reduces integration effort

Stable long-term code storage ideal for infrequent updates

Broad programmer support for EPROM devices

Robust plastic PLCC form factor fits common sockets and boards

Cost-effective option for sustaining and repair programs

Packaging

Type 32-PLCC J-leaded LCC

Material Plastic encapsulated, windowless OTP

Size 13.97 mm x 11.43 mm body footprint

Pin configuration 32 pins with address lines A0 to Axx, data lines D0 to D7, CE, OE, VCC, GND, and PGM VPP for programming

Mounting Surface mount compatible with PLCC sockets or reflow solder processes

Thermal characteristics Commercial operating 0 to 70 C, observe normal PCB thermal design to keep within spec

Electrical properties Read supply 4.5 V to 5.5 V, 90 ns access, non-volatile EPROM cell technology, RoHS non-compliant

Supplier device package 32-PLCC 13.97 x 11.43 mm

Ship form Tube

Lifecycle

Mature legacy product class still widely used in sustaining programs

Availability may vary by speed grade and package, plan procurement early

Potential equivalents and alternates for review verify pinout, timing, and programming before use

- Microchip AT27C020-70JC 2 Mbit EPROM 70 ns PLCC32

- Microchip AT27C020-120JC 2 Mbit EPROM 120 ns PLCC32

- STMicroelectronics M27C2001-10F1 2 Mbit EPROM 32-PLCC

- Macronix MX27C2000 2 Mbit EPROM 32-PLCC

- AMD Spansion AM27C020-90JC 2 Mbit EPROM 32-PLCC

- National NM27C020 2 Mbit EPROM 32-PLCC

If you need exact drop-in replacements or RoHS compliant alternatives contact Y-IC sales via our website for vetted cross references and guidance

Key Application Areas

Firmware storage for legacy 5 V microcontrollers and microprocessors

Boot ROM and BIOS in industrial and embedded systems

Maintenance and repair of telecom, networking, and instrumentation equipment

Arcade and gaming boards, consumer electronics refurbishment

Automotive service for older ECUs and modules using EPROM code storage

Datasheet

Y-IC provides the most authoritative datasheet for AT27C020-90JC on this product page

Download the datasheet now for full pinout, timing, programming conditions, and absolute maximum ratings

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