Microchip Technology AT28C010E-15TU-T

Overview

AT28C010E-15TU-T from Microchip Technology is a 1-Mbit (128K × 8) paged parallel EEPROM with JEDEC-standard byte-wide pinout, 150 ns read access time, 10 ms maximum page write cycle time, and 100,000 write endurance cycles - used for nonvolatile firmware storage and configuration data retention in industrial control modules.

For engineers reviewing the AT28C010E-15TU-T datasheet, AT28C010E-15TU-T pinout, AT28C010E-15TU-T application, or AT28C010E-15TU-T equivalent, key selection criteria include industrial temperature support (–40°C to +85°C), hardware/software data protection, DATA Polling and Toggle Bit write completion detection, and compatibility with 5V ±10% CMOS/TTL systems.

Technical Context

The AT28C010E-15TU-T implements a paged architecture with a 128-byte internal latch enabling simultaneous write of up to 128 bytes per cycle. Its dual-line chip enable (CE) and output enable (OE) control supports bus contention avoidance in shared-memory systems.

It features both hardware-level VCC sensing (write inhibited below 3.8 V) and software-controlled data protection via a 3-byte command sequence. Write completion is confirmed through either I/O7 DATA Polling or I/O6 Toggle Bit behavior - no external polling timer required.

Key Specifications

Pinout & Package

AT28C010E-15TU-T is supplied in a 32-lead TSOP (8 × 20 mm, Type I) package with matte Sn terminal finish and industrial-grade marking. Pin 1 identifier is located at corner with beveled edge.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT28C010E-15TU-T, the AT28C010-15TU offers lower endurance at identical speed and footprint, while the M95M01-RDW6TP trades parallel simplicity for serial density and layout efficiency - neither is pin-compatible, but both serve overlapping nonvolatile storage roles.

Availability

AT28C010E-15TU-T is available at Aetrix Electronics and suitable for industrial PLC configuration storage, medical device calibration data retention, telecom line card boot firmware, and automotive body control module settings requiring stable component supply across extended production lifecycles.

Supply support for AT28C010E-15TU-T 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

Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with ISO 9001-certified manufacturing and global distribution.

The AT28C010E-15TU-T belongs to Microchip's legacy parallel EEPROM product line, designed specifically for industrial and automotive systems requiring robust, pin-compatible, 5V-compatible nonvolatile memory with deterministic write timing and hardware-level data integrity safeguards.

FAQ

What is the maximum page write size supported by the AT28C010E-15TU-T?

The AT28C010E-15TU-T supports up to 128 bytes per page write operation. This is enabled by its internal 128-byte data latch, which allows the host to load a full page before initiating internal programming. Each byte must be loaded within 150 µs of the prior byte (tBLC), and all addresses must reside on the same page defined by A7–A16. The AT28C010E-15TU-T does not support partial-page writes smaller than 1 byte or larger than 128 bytes.

How does hardware write protection function in the AT28C010E-15TU-T?

Hardware write protection in the AT28C010E-15TU-T operates through three mechanisms: (1) VCC sense circuitry inhibits writes if supply drops below ~3.8 V, (2) a 5 ms internal power-on delay prevents writes until VCC stabilizes, and (3) write is blocked unless CE is low, OE is high, and WE transitions low. These features ensure the AT28C010E-15TU-T remains immune to spurious writes during power ramp-up, brown-out, or noise events on control lines.

Can the AT28C010E-15TU-T be used in place of the AT28C010-15TU without design changes?

Yes - the AT28C010E-15TU-T is a direct functional and pinout replacement for the AT28C010-15TU, sharing identical timing, voltage, package, and interface specifications. The only difference is the 'E' suffix denoting 100,000 write cycles versus 10,000 in the non-E version. No PCB, firmware, or timing modifications are required when upgrading to the AT28C010E-15TU-T, making it a seamless endurance-enhanced drop-in option.

What is the role of the NC pins on the AT28C010E-15TU-T TSOP package?

In the AT28C010E-15TU-T's 32-lead TSOP package, pins 6 and 9 are designated NC (No Connect). These pins have no internal connection and must remain unconnected in the PCB layout. They are not reserved for future functionality or alternate modes - routing traces or applying solder to them may cause mechanical stress or unintended coupling. The AT28C010E-15TU-T's full functionality is achieved using only the documented active pins (A0–A16, I/O0–I/O7, CE, OE, WE, VCC, GND).

Does the AT28C010E-15TU-T support chip erase, and how is it performed?

Yes, the AT28C010E-15TU-T supports optional software chip erase using a 6-byte command sequence applied via standard write cycles. Unlike page or byte writes, chip erase requires raising A9 to 12.0 V ± 0.5 V during execution and follows specific timing constraints (tS ≥ 5 ms, tW/tH ≥ 10 ms). This operation clears the entire 1-Mbit array to FFh and is distinct from the standard page write flow. The AT28C010E-15TU-T datasheet provides full waveforms and algorithm details in Section 5.10.