Microchip Technology AT28C010E-15TU

Overview

AT28C010E-15TU 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, and industrial temperature range (–40°C to +85°C). It operates from a single 5V ±10% supply, supports hardware/software data protection, and is used in firmware storage, configuration memory, and boot code retention for embedded controllers.

For engineers reviewing the AT28C010E-15TU datasheet, AT28C010E-15TU pinout, AT28C010E-15TU application, or AT28C010E-15TU equivalent, key selection criteria include page-write capability (1–128 bytes), DATA Polling/Toggle Bit write completion detection, CMOS/TTL compatibility, 100,000-cycle endurance, and green PLCC/TSOP packaging options.

Technical Context

The AT28C010E-15TU implements a paged architecture with a 128-byte internal latch, enabling burst writes without bus hold. Its dual-line control (CE/OE) allows flexible bus contention management during read operations, while WE-controlled or CE-controlled write initiation supports both byte and page modes.

Write completion is verified via I/O7 DATA Polling (complement-to-data toggle) or I/O6 Toggle Bit behavior-both usable at any point during t_WC. Internal V_CC sensing (3.8 V threshold), 5 ms power-on delay, and noise filtering (<15 ns pulse rejection) provide robust hardware write inhibition independent of software state.

Key Specifications

Pinout & Package

AT28C010E-15TU is available in two RoHS-compliant, green (Pb/halide-free) packages: 32-lead PLCC (0.49" × 0.59") and 32-lead TSOP (8 mm × 20 mm), both with JEDEC-standard byte-wide pinout and industrial-grade marking (U suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT28C010-15TU, the AT28C010E-15TU offers 10× higher endurance for field-upgradable systems, while MX28LV160CBTI-15G provides greater density but mandates layout changes and voltage translation - making AT28C010E-15TU optimal for maintaining legacy 5V industrial platforms with frequent firmware revisions.

Availability

AT28C010E-15TU is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, automotive ECUs, and telecom infrastructure requiring stable component supply, long-lifecycle support, and green packaging compliance.

Supply support for AT28C010E-15TU 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 global provider of microcontrollers, analog, FPGA, and memory solutions, with a focus on embedded control and connectivity.

The AT28C010E-15TU belongs to Microchip's legacy parallel EEPROM product line, designed specifically for 5V systems requiring reliable, pin-compatible nonvolatile storage with deterministic write timing and industrial-grade reliability.

FAQ

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

The AT28C010E-15TU supports page writes of 1 to 128 bytes within a single 128-byte boundary defined by address bits A7–A16. Each byte must be loaded within 150 µs of the prior byte (t_BLC); exceeding this interval triggers automatic internal programming. This capability is confirmed in Section 5.8 and Table 5-4 of the DS20006331A datasheet and applies directly to the AT28C010E-15TU variant.

Does the AT28C010E-15TU require external high-voltage circuitry for programming?

No, the AT28C010E-15TU performs all erase and program operations using only its standard 5V ±10% supply - no external 12V or high-voltage generator is needed. The optional chip erase mode uses a 6-byte software command sequence, and device identification memory is accessed with A9 = 12V, but that 12V is required only for the dedicated ID sector (1FF80h–1FFFFh), not for main array writes. Standard operation of the AT28C010E-15TU remains fully 5V-compatible.

How does hardware write protection work on the AT28C010E-15TU?

Hardware write protection on the AT28C010E-15TU operates through four independent mechanisms: (1) V_CC sensing inhibits writes below ~3.8 V, (2) a 5 ms internal power-on delay prevents writes until supply stabilizes, (3) write is blocked if OE is low, CE is high, or WE is high, and (4) input noise filters reject pulses <15 ns on CE/WE. These features are active regardless of software data protection state and are documented in Section 5 of the AT28C010E-15TU datasheet.

Can the AT28C010E-15TU be used in systems with mixed 3.3V and 5V logic?

Yes - the AT28C010E-15TU features CMOS and TTL compatible inputs and outputs, with VIH minimum of 2.0 V and VIL maximum of 0.8 V, allowing direct interfacing to 3.3V controllers when VCC = 5V. Outputs drive to VOH1 ≥2.4 V at –400 µA, ensuring valid high levels for 3.3V receivers. However, output low (VOL ≤0.45 V at 2.1 mA) and input thresholds are optimized for 5V systems; level-shifting is recommended for bidirectional 3.3V bus sharing. This behavior is specified in Table 4-2 of the AT28C010E-15TU electrical characteristics.

What is the purpose of the 128-byte device identification area in the AT28C010E-15TU?

The AT28C010E-15TU includes a dedicated 128-byte device identification area (addresses 1FF80h–1FFFFh) accessible only when A9 is raised to 12.0 V ±0.5 V. This region is electrically isolated from the main memory array and intended for permanent serialization, calibration constants, manufacturing trace codes, or security keys - preserving main array endurance and enabling post-production customization without affecting functional firmware storage. Details are provided in Section 5 of the AT28C010E-15TU datasheet.