STMicroelectronics M27C2001-15F1

Overview

M27C2001-15F1 from STMicroelectronics is a 2 Mbit (256K × 8) UV-erasable EPROM in FDIP32W ceramic window package, featuring 55 ns access time, 5 V ±10% read supply, and 12.75 V ±0.25 V programming voltage. It supports TTL-level addressing and data I/O, operates across –40°C to +85°C, and is used in legacy microprocessor-based systems requiring field-erasable firmware storage.

For engineers reviewing the M27C2001-15F1 datasheet, M27C2001-15F1 pinout, M27C2001-15F1 application, or M27C2001-15F1 equivalent, key selection considerations include UV erasure capability, two-line output control (E/G), PRESTO II programming algorithm compatibility, standby current of 100 µA, and ECOPACK® lead-free compliance for legacy board rework and industrial repair programs.

Technical Context

The M27C2001-15F1 implements a high-speed CMOS EPROM architecture with dual active-low control lines: Chip Enable (E) for power gating and Output Enable (G) for output bus control. Its logic diagram confirms full 18-bit address decoding (A0–A17) and 8-bit bidirectional data I/O (Q0–Q7), with dedicated VPP (12.75 V) and VCC (5 V or 6.25 V) rails for read vs. program modes.

It supports Electronic Signature mode via A9 voltage forcing (11.5–12.5 V) to return manufacturer code 20h and device code 61h on Q7–Q0. Erasure requires 2537 Å UV light at ≥15 W·s/cm² dose (15–20 min at 12,000 µW/cm²), and programming uses 100 µs pulses per word with automatic margin verify under PRESTO II algorithm.

Key Specifications

Pinout & Package

FDIP32W (32-pin Ceramic Frit-Seal Dual In-line Package with UV-transparent window); hermetically sealed, lead-free ECOPACK® compliant, 0.6-inch width, 0.3-inch height, window centered over die for uniform UV exposure.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar UV-erasable EPROM applications.

Compared with AM27C2001-15DC, M27C2001-15F1 provides field-erasable flexibility at the cost of higher package unit price; versus AT27C2001-15PU, it offers STMicroelectronics' PRESTO II margin guarantee and broader third-party programmer support, critical for multi-vendor repair ecosystems.

Availability

M27C2001-15F1 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy medical device boot ROM, and military avionics configuration memory requiring stable component supply across extended product lifecycles.

Supply support for M27C2001-15F1 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management ICs with vertical manufacturing capabilities.

The M27C2001 belongs to ST's legacy EPROM product line, designed specifically for field-upgradable firmware storage in microprocessor-based systems where UV erasure, deterministic timing, and long-term data retention are mandatory.

FAQ

What UV wavelength and exposure time are required to fully erase the M27C2001-15F1?

Full erasure requires short-wave ultraviolet light at 2537 Å wavelength with a minimum integrated dose of 15 W·s/cm². Using a standard 12,000 µW/cm² UV lamp, the device must be placed within 2.5 cm of the lamp tubes for 15–20 minutes. Room fluorescent lighting can cause partial erasure over years; direct sunlight may erase it in ~1 week.

Can the M27C2001-15F1 be programmed using standard 5 V logic levels?

No. Programming requires VPP = 12.75 V ±0.25 V applied to the VPP pin, VCC = 6.25 V ±0.25 V, and a 100 µs active-low pulse on the P pin while E is low. Address and data lines use standard TTL levels (0–0.8 V low, 2–5 V high), but the high-voltage VPP rail must be generated externally - not from the host system's 5 V supply.

Is the FDIP32W package of the M27C2001-15F1 RoHS compliant?

Yes. The FDIP32W package is manufactured as an ECOPACK® device, meaning it is lead-free and complies with RoHS Directive 2011/65/EU. JEDEC JESD97 second-level interconnect markings appear on both the package and inner box label, and soldering profiles follow ST's published lead-free reflow guidelines.

How does the two-line output control (E and G) prevent bus contention in multi-ROM systems?

E (Chip Enable) gates power: when high, the device draws only 100 µA and forces all outputs to high-impedance regardless of G state. G (Output Enable) gates output drivers only: when low and E is low, Q0–Q7 drive valid data; when high and E is low, outputs go Hi-Z. This ensures deselected devices consume near-zero power *and* never drive the bus.