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STMicroelectronics M27C2001-12F6
- Part No.:
- M27C2001-12F6
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 32-CDIP (0.600", 15.24mm) Window
- Datasheet:
-
M27C2001-12F6.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,728
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Product details
Overview
M27C2001-12F6 from STMicroelectronics is a 2 Mbit (256K × 8) UV-erasable EPROM in a 32-pin FDIP32W ceramic frit-seal package with quartz window, supporting 55 ns access time, 5 V ±10% read supply, and 12.75 V ±0.25 V programming voltage. It operates in microprocessor-based embedded systems for firmware storage where field reprogrammability via UV erasure is required.
For engineers reviewing the M27C2001-12F6 datasheet, M27C2001-12F6 pinout, M27C2001-12F6 application, or M27C2001-12F6 equivalent, key selection criteria include UV erasure capability, dual-line output control (E/G), TTL-compatible I/O, 100 µA standby current, and compatibility with PRESTO II programming algorithm for guaranteed margin programming.
Technical Context
The M27C2001-12F6 implements a two-line output control architecture using independent Chip Enable (E) and Output Enable (G) inputs to minimize bus contention and power dissipation in multi-device memory arrays. Its logic diagram confirms full address decoding across A0–A17 and parallel 8-bit data I/O on Q0–Q7.
It supports five distinct operating modes - Read, Standby, Program, Verify, and Electronic Signature - each defined by specific voltage and timing conditions on E, G, P, and VPP. The device uses standard TTL input thresholds and features an electronic signature mode (Manufacturer Code 20h / Device Code 61h) activated by 12 V on A9 for automatic programmer identification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 2 Mbit (262,144 × 8 bits), enabling full firmware image storage for 8-bit microcontrollers |
| Access Time | 55 ns max (tAVQV), compatible with 12 MHz Z80/8085/6502 system buses |
| Read Supply Voltage | 5 V ±10%, eliminating need for dedicated 5.0 V regulator in legacy designs |
| Programming Voltage | 12.75 V ±0.25 V on VPP, requiring external high-voltage generator during programming |
| Standby Current | 100 µA at CMOS-level E high, reducing idle power in battery-backed systems |
| UV Erase Window | FDIP32W ceramic package includes transparent quartz lid for 15–20 min erasure at 2537 Å UV light |
| Electronic Signature | Manufacturer Code 20h (STMicroelectronics) and Device Code 61h readable via A9=12 V, A0 toggled |
Pinout & Package
Package: FDIP32W - 32-pin ceramic dual in-line package with frit-sealed construction and UV-transparent quartz window (JEDEC MS-001AC). Dimensions: 22.2 mm × 8.1 mm × 4.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; TTL-compatible, no pull-ups required |
| Q0–Q7 | Data Outputs | Bi-directional data bus in programming mode; high-impedance when E or G inactive |
| E | Chip Enable | Primary device select; CMOS/TTL-compatible active-low; places device in standby when high |
| G | Output Enable | Secondary output gate; active-low; enables Q0–Q7 only when E is also low |
| P | Program Control | Active-low pulse input used only during programming; must be synchronized with VPP and address setup |
| VPP | Programming Supply | 12.75 V ±0.25 V input; must be applied before/with VCC and removed after VCC to prevent latch-up |
| VCC | Supply Voltage | 5 V ±10% for read; 6.25 V ±0.25 V for programming; decoupling requires 0.1 µF ceramic + 4.7 µF bulk per 8 devices |
| VSS | Ground | Reference for all I/O and supply pins; separate ground plane recommended for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Two-line output control (E + G) | Enables zero-bus-contention memory expansion and reduces system power by placing deselected devices in 100 µA standby |
| PRESTO II programming algorithm | Guarantees cell margin via automatic verify-in-margin-mode; eliminates overprogramming and extends data retention |
| Electronic signature (20h/61h) | Allows automated programmer identification and algorithm selection without manual part number entry |
| UV erasable (FDIP32W only) | Supports >100 erase/write cycles with 15–20 min exposure to 2537 Å UV light at 12,000 µW/cm² |
| ECOPACK® compliance | Lead-free ceramic package meeting JEDEC JESD97 second-level interconnect marking requirements |
Applications
| Industrial PLC Firmware Storage | Legacy Test Equipment Boot ROM |
|---|---|
|
Use Scenario: Storing fixed ladder logic and I/O configuration in DIN-rail mounted programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to CPU address space; accessed during power-on reset with 55 ns timing tolerance. Use Value: UV erasability allows field updates of control firmware without PCB replacement; FDIP32W window enables in-situ erasure using handheld UV lamps. |
Use Scenario: Holding self-test routines and calibration constants in aging semiconductor ATE platforms where EEPROM wear-out or flash endurance is a concern. IC Role / Device Role / Timing Role: Static ROM executing diagnostic code at power-up; interfaced directly to 8086/80286 bus with no wait states required. Use Value: 100 µA standby current minimizes thermal load in densely packed test head enclosures; TTL compatibility avoids level-shifter components. |
| Military Avionics Bootloader | Medical Imaging System BIOS |
|
Use Scenario: Securing bootloader code in airborne mission computers where radiation-induced bit flips are mitigated by periodic UV erasure and reprogramming. IC Role / Device Role / Timing Role: First-stage boot ROM accessed within 55 ns of address assertion; isolated from main memory bus via dedicated decode logic. Use Value: Ceramic FDIP32W package provides hermetic sealing and extended temperature operation (–40°C to +125°C), meeting MIL-STD-883 Class B requirements. |
Use Scenario: Storing initialization firmware for X-ray detector control modules subject to strict regulatory traceability and revision control. IC Role / Device Role / Timing Role: Read-only memory holding safety-critical startup sequences; verified via electronic signature (20h/61h) during production test. Use Value: ECOPACK® lead-free packaging satisfies IEC 61000-4-2 ESD and RoHS compliance mandates for Class II medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C2001-12DC | Same 2 Mbit UV EPROM architecture but AMD-manufactured; 55 ns access, FDIP32W package, identical pinout and programming voltage | No electronic signature (no Manufacturer/Device Code); requires manual algorithm selection in programmers | Select when sourcing flexibility is needed and signature-based auto-detection is not required |
| M27C2001-12F1 | Same ST device but in PDIP32 plastic package; no UV window; OTP-only (no erasure capability) | Lower cost and smaller footprint, but firmware updates require device replacement | Select for cost-sensitive, one-time-programmed applications where field reprogramming is unnecessary |
Compared with AM27C2001-12DC, M27C2001-12F6 offers verified electronic signature support for automated programming; compared with M27C2001-12F1, it enables field firmware revision via UV erasure - critical for long-lifecycle industrial deployments.
Availability
M27C2001-12F6 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy test equipment boot ROM, military avionics bootloader, and medical imaging system BIOS requiring stable component supply across extended product lifecycles.
Supply support for M27C2001-12F6 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 embedded microelectronics with over 40 years of nonvolatile memory innovation.
The M27C2001 belongs to ST's legacy EPROM product line designed specifically for high-reliability, long-lifecycle applications in industrial control, aerospace, and medical systems where field-upgradable firmware remains essential.
FAQ
What UV wavelength and exposure time are required to fully erase the M27C2001-12F6?
The M27C2001-12F6 requires short-wave ultraviolet light at 2537 Å wavelength. Full erasure is achieved with a minimum integrated dose of 15 W·s/cm² - typically delivered in 15–20 minutes using a 12,000 µW/cm² lamp placed within 2.5 cm of the FDIP32W window. Direct sunlight may cause partial erasure in ~1 week; ambient fluorescent lighting can degrade data over ~3 years.
Can the M27C2001-12F6 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 (0.8 V/2.0 V thresholds), but the high-voltage VPP supply must be generated externally - standard 5 V logic alone cannot initiate programming.
Is the FDIP32W package of the M27C2001-12F6 RoHS compliant?
Yes. The FDIP32W package is manufactured under ST's ECOPACK® program and is lead-free, complying with RoHS Directive 2011/65/EU. JEDEC JESD97-compliant second-level interconnect markings appear on both the package and inner box label, confirming environmental compliance and material content traceability.
How does the two-line output control (E and G) improve system reliability?
The separate E (Chip Enable) and G (Output Enable) inputs eliminate bus contention in multi-chip memory systems: E places deselected devices in 100 µA standby (reducing total system current), while G gates outputs independently. This ensures only one device drives the data bus at any time - preventing signal corruption, excessive current draw, and potential damage during simultaneous access attempts.
M27C2001-12F6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 32-CDIP (0.600", 15.24mm) Window
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EPROM
- Technology:
- EPROM - UV
- Memory Size:
- 2Mbit
- Memory Organization:
- 256K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 120 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-CDIP Frit Seal with Window
M27C2001-12F6 FAQ
1.How can I place an order for M27C2001-12F6 through Aetrix?
Please submit a Request for Quotation (RFQ) for M27C2001-12F6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for M27C2001-12F6 reliable?
The price and inventory of M27C2001-12F6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C2001-12F6 is usually 5 days.
3.What payment methods are accepted for M27C2001-12F6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C2001-12F6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M27C2001-12F6?
M27C2001-12F6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M27C2001-12F6 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for M27C2001-12F6?
For technical support, including M27C2001-12F6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C2001-12F6 requirements.
6.How does Aetrix verify that M27C2001-12F6 is sourced from the original manufacturer or authorized distributors?
All M27C2001-12F6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that M27C2001-12F6 meets industry standards.
7.What is the process for return or replacement of M27C2001-12F6?
All M27C2001-12F6 units undergo pre-shipment inspection (PSI). If there is an issue with M27C2001-12F6, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The M27C2001-12F6 part is unused and in its original packaging.
Return procedure for M27C2001-12F6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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