Microchip Technology AT28C010E-12PU

Overview

AT28C010E-12PU from Atmel is a 1-megabit (128K × 8) paged parallel EEPROM with JEDEC-standard byte-wide pinout, 120 ns read access time, 10 ms maximum page write cycle, and industrial temperature range (–40°C to +85°C). It operates from a single 5V ±10% supply, supports hardware/software data protection, and integrates a 128-byte page register for simultaneous multi-byte writes - used in firmware storage, configuration memory, and boot code retention in embedded controllers.

For engineers reviewing the AT28C010E-12PU datasheet, AT28C010E-12PU pinout, AT28C010E-12PU application, or AT28C010E-12PU equivalent, key selection considerations include its 100K-cycle endurance rating (vs. standard 10K), CMOS/TTL-compatible I/O, DATA polling and toggle-bit write completion detection, and green (Pb/halide-free) PDIP packaging - critical for legacy industrial control and long-lifecycle instrumentation designs.

Technical Context

The AT28C010E-12PU implements a paged parallel EEPROM architecture with internal address/data latching for up to 128-byte writes, eliminating external timing logic. Its dual-line chip enable (CE) and output enable (OE) control enables flexible bus contention management during read cycles.

Write operations are self-timed using an internal control timer; completion is signaled via DATA polling on I/O7 or toggle-bit behavior on I/O6. Hardware protection includes VCC sense (<3.8V inhibit), 5 ms power-on delay, and noise filtering on WE/CE inputs - ensuring robustness during power transitions.

Key Specifications

Pinout & Package

AT28C010E-12PU uses a 32-lead plastic dual inline package (PDIP), 0.600" wide, with JEDEC-standard byte-wide pinout and pin 1 located at bottom-left corner when viewed top-down with notch facing up.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar paged parallel EEPROM applications.

Compared with AT28C010E-12PU, the standard AT28C010-12PU offers identical interface and timing but lower endurance, while MX28F1000PC-12 provides cross-vendor compatibility at the cost of reduced data protection features and no device ID area - making AT28C010E-12PU optimal for high-reliability, field-upgradable systems.

Availability

AT28C010E-12PU is available at Aetrix Electronics and suitable for industrial PLC configuration storage, legacy embedded system boot memory, and energy meter firmware archive applications requiring stable component supply and long-term obsolescence management.

Supply support for AT28C010E-12PU 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 nonvolatile memory, microcontrollers, and security ICs for industrial, automotive, and consumer applications.

The AT28C010 product line delivers high-endurance, paged parallel EEPROMs designed for firmware storage, configuration retention, and boot code archiving in systems where SRAM-like interface simplicity and long-term data integrity are essential.

FAQ

What is the endurance rating of the AT28C010E-12PU?

The AT28C010E-12PU is rated for 100,000 write/erase cycles - double the 10,000-cycle rating of the standard AT28C010-12PU. This enhanced endurance is achieved through Atmel's advanced nonvolatile CMOS process and internal error correction, making the AT28C010E-12PU suitable for applications requiring frequent field updates such as calibration data logging or firmware patching in industrial equipment.

How does the AT28C010E-12PU detect write completion?

The AT28C010E-12PU supports two hardware-based write completion detection methods: DATA polling on I/O7 (which returns the complement of the last written byte until completion) and toggle-bit monitoring on I/O6 (which toggles between 0 and 1 during programming). Both methods allow the host system to poll asynchronously without fixed timing delays - a key advantage over EEPROMs requiring fixed tWC wait states. This behavior is fully specified in the AT28C010E-12PU AC characteristics table.

Does the AT28C010E-12PU require external high-voltage programming?

No, the AT28C010E-12PU performs all write and erase operations using only the standard 5V ±10% supply - no external 12V or higher programming voltage is needed for normal operation. However, the optional 128-byte device identification area (1FF80H–1FFFFH) requires 12V ±0.5V applied to pin A9 for programming, which is strictly for serialization and not required for main memory operation. The AT28C010E-12PU remains fully functional with standard 5V logic levels for all primary read/write functions.

Is the AT28C010E-12PU pin-compatible with older EPROMs like the 27C010?

No, the AT28C010E-12PU is not pin-compatible with UV-erasable EPROMs such as the 27C010. While both are 32-pin DIP devices with similar memory density, the AT28C010E-12PU uses JEDEC-standard byte-wide pinout with dedicated CE/OE/WE controls, whereas the 27C010 uses OE/PGM/VPP pins and lacks write-enable logic. Direct replacement would require PCB redesign and firmware adaptation - the AT28C010E-12PU is intended as a functional upgrade, not a mechanical drop-in.

What package type does the AT28C010E-12PU use?

The AT28C010E-12PU uses a 32-lead plastic dual inline package (PDIP), 0.600" wide, with lead finish compliant with RoHS and green (Pb/halide-free) requirements. This package matches the industry-standard 32P6 footprint defined in Atmel's ordering information and is mechanically and electrically compatible with sockets used for legacy parallel memory devices - enabling straightforward integration into existing through-hole manufacturing lines.