Microchip Technology AT28C010-15PU

Overview

AT28C010-15PU from Atmel is a 1 Mbit (128K × 8) paged parallel EEPROM with JEDEC-standard byte-wide pinout, 150 ns read access time, single 5V ±10% supply, and industrial temperature range (–40°C to +85°C). It supports automatic page writes of up to 128 bytes and provides DATA polling and toggle-bit write completion detection for embedded system firmware storage.

For engineers reviewing the AT28C010-15PU datasheet, AT28C010-15PU pinout, AT28C010-15PU application, or AT28C010-15PU equivalent, key selection criteria include verified 128-byte page write timing (≤10 ms), CMOS/TTL I/O compatibility, hardware/software data protection, and green (Pb/halide-free) PLCC-32 packaging.

Technical Context

The AT28C010-15PU operates as a drop-in SRAM-compatible nonvolatile memory: reads require CE and OE low with WE high; writes initiate on falling CE or WE edge with OE high. Its internal 128-byte page register latches address and data, freeing the bus during autonomous internal programming.

Write completion is confirmed via I/O7 DATA polling (complement-to-true transition) or I/O6 toggle-bit behavior. Hardware protection includes VCC sense (<3.8 V inhibit), 5 ms power-on delay, noise filtering (<15 ns pulse rejection), and CE/OE/WE state-based write inhibition.

Key Specifications

Pinout & Package

AT28C010-15PU uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package with JEDEC-standard byte-wide pinout and Pb/halide-free construction. Pin 1 is designated by corner cut and is a no-connect (DC) terminal.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT28C010-15PU, the AT28C010-15JI offers identical functionality with conventional lead finish, while AT28C010-15TU delivers the same performance in a lower-profile TSOP package - both retain full JEDEC pin compatibility and 150 ns read timing, enabling direct substitution where package constraints allow.

Availability

AT28C010-15PU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, telecom line card configuration, and test equipment calibration data retention requiring stable component supply and long-term lifecycle support.

Supply support for AT28C010-15PU 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 security ICs, with design centers across the US, Europe, and Asia.

The AT28C010 product line was engineered for reliable, SRAM-transparent firmware and configuration storage in industrial, telecom, and instrumentation systems - emphasizing robust write endurance, deterministic status feedback, and JEDEC interoperability.

FAQ

What is the maximum page write size supported by the AT28C010-15PU?

The AT28C010-15PU supports page writes of 1 to 128 bytes per cycle. All bytes must reside on the same 128-byte page, defined by address bits A7–A16. The internal page register latches the entire block, enabling autonomous programming without host intervention after initiation - a key efficiency advantage over byte-wise writes in the AT28C010-15PU.

Does the AT28C010-15PU require an external programming voltage?

No, the AT28C010-15PU operates from a single 5V ±10% supply for both read and write operations. Programming is internally managed using charge-pump circuitry; no external VPP or 12V rail is needed. However, the optional 128-byte device ID area (1FF80H–1FFFFH) does require 12V ±0.5V applied to A9 for write access - this is separate from normal memory operation of the AT28C010-15PU.

How is write completion detected on the AT28C010-15PU?

Write completion on the AT28C010-15PU is confirmed using either DATA polling (monitoring I/O7 for transition from complement to true data) or the toggle-bit method (observing I/O6 toggling until it stabilizes). Both methods are valid at any point during the write cycle and eliminate reliance on fixed timing delays - essential for deterministic real-time handling in the AT28C010-15PU.

Is the AT28C010-15PU pin-compatible with standard SRAM devices?

Yes, the AT28C010-15PU uses a JEDEC-approved byte-wide pinout identical to common 128K×8 SRAMs (e.g., IS61LV12816). Address (A0–A16), data (I/O0–I/O7), and control pins (CE, OE, WE) map directly, allowing drop-in replacement in existing designs - provided write timing and data protection requirements of the AT28C010-15PU are accounted for in firmware.

What protection mechanisms prevent accidental writes to the AT28C010-15PU?

The AT28C010-15PU implements dual-layer protection: hardware features (VCC sense <3.8 V, 5 ms power-on delay, noise filtering on CE/WE, and state-based write inhibit) and software data protection (3-byte command sequence to enable/disable write lock). These ensure immunity to power glitches and debug errors - a critical safeguard for field-deployed systems using the AT28C010-15PU.