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STMicroelectronics M27C4001-10F1
- Part No.:
- M27C4001-10F1
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 32-CDIP (0.600", 15.24mm) Window
- Datasheet:
-
M27C4001-10F1.pdf
- Description:
- IC EPROM 4MBIT PARALLEL 32CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,615
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Product details
Overview
M27C4001-10F1 from STMicroelectronics is a 4 Mbit (512K × 8) UV-erasable EPROM in FDIP32W ceramic window package, operating at 5V ±10%, with 35ns access time, 30mA active current, and 100µA standby current. It serves as non-volatile program storage in legacy microprocessor systems requiring field-erasable firmware, such as industrial PLCs, telecom line cards, and embedded instrumentation.
For engineers reviewing the M27C4001-10F1 datasheet, M27C4001-10F1 pinout, M27C4001-10F1 application, or M27C4001-10F1 equivalent, this page provides verified functional identity, validated FDIP32W pin mapping, confirmed UV-erase timing and programming voltage (12.75V), electronic signature codes (20h/41h), and real-world system integration constraints including two-line output control and standby power sequencing.
Technical Context
The M27C4001-10F1 implements a TTL-compatible, asynchronous parallel memory architecture with dual enable control: Chip Enable (E) governs power state and device selection, while Output Enable (G) independently gates data output without affecting standby current. Its logic diagram confirms full address decoding across A0–A18 and byte-wide Q0–Q7 I/O.
It supports four distinct operational modes-Read, Standby, Programming, and Electronic Signature-each defined by specific voltage and timing conditions on E, G, VPP, and A9. Programming requires precise 100µs pulses at 12.75V VPP with 6.25V VCC, and erasure relies on 2537 Å UV exposure delivering ≥15 W·sec/cm² dose for full bit reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 4 Mbit (524,288 × 8 bits), fixed byte-wide organization - no address multiplexing or word-mode support. |
| Access Time | 35 ns (tAVQV, tELQV) at 5V - determines maximum bus clock rate in synchronous read cycles. |
| Supply Voltage (Read) | 5V ±10% - compatible with standard TTL/CMOS logic rails; no internal regulation required. |
| Active Current | 30 mA at 5 MHz - defines decoupling capacitor sizing (0.1 µF ceramic per device recommended). |
| Standby Current | 100 µA (CMOS E high) - enables low-power retention during system idle without external power gating. |
| Programming Voltage | 12.75V ±0.25V on VPP - requires dedicated HV supply; incompatible with standard 5V-only programmers. |
| Electronic Signature | Manufacturer Code 20h, Device Code 41h - used by automated programmers to validate part identity before programming. |
Pinout & Package
FDIP32W (32-pin Ceramic Frit-Seal DIP with UV-transparent window) - RoHS-compliant ECOPACK® package with 0.6-inch body width, 0.3-inch height, and 0.1-inch lead pitch. Window enables post-programming UV erasure (~15–20 min at 12,000 µW/cm²).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus; fully decoded - no row/column addressing; supports direct linear access to all 524,288 bytes. |
| Q0–Q7 | Data Outputs / Programming Inputs | Bi-directional TTL-level I/O: outputs during Read/Verify, inputs during Programming (data latched on E pulse). |
| E | Chip Enable | Active-low primary device select; drives device into Standby (100 µA) when high; must be pulsed low for programming. |
| G | Output Enable | Active-low output gate; controls Q0–Q7 drive state independently of E - enables bus sharing in multi-chip arrays. |
| VPP | Programming Supply | 12.75V input required only during programming/verify; must be stable before and after VCC sequencing. |
| VCC | Power Supply | 5V ±10% for Read/Standby; 6.25V ±0.25V for Programming - strict voltage separation prevents latch-up. |
| VSS | Ground | Common reference for all signals; requires low-inductance connection adjacent to 0.1 µF decoupling capacitor. |
| A9 | Electronic Signature Control | Receives 11.5–12.5V during ES mode to enable manufacturer/device code readout on Q7–Q0. |
Key Features
| Feature | Design Value |
|---|---|
| Two-line output control (E + G) | Enables zero-bus-contention memory expansion: deselected chips enter standby (100 µA), not just Hi-Z. |
| UV-erasable via FDIP32W window | Supports unlimited reprogramming cycles with proper UV exposure - critical for firmware development and field updates. |
| Presto II programming algorithm | Guarantees margin-safe programming in ≤52.5 s via auto-verified 100 µs pulses - eliminates over-programming risk. |
| Electronic signature (20h/41h) | Allows automatic device identification in production programmers - prevents mismatched algorithms and programming failures. |
| ECOPACK® compliance | Lead-free ceramic package meeting JEDEC JESD97 marking requirements - suitable for environmentally regulated deployments. |
Applications
| Industrial PLC Firmware Storage | Legacy Telecom Line Card Boot ROM |
|---|---|
|
Use Scenario: Storing boot firmware and configuration tables in programmable logic controllers deployed in factory automation environments with ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Non-volatile program memory mapped to CPU address space; accessed during cold start and watchdog recovery sequences. Use Value: UV-erasability allows field firmware patches without board replacement; 35ns access ensures deterministic boot timing within 200ms safety windows. |
Use Scenario: Holding initialization code and protocol stacks in T1/E1 line interface cards operating in central office cabinets with limited airflow. IC Role / Device Role / Timing Role: Primary boot ROM executing from reset vector; co-located with 8-bit microcontroller and serial EEPROM. Use Value: 100µA standby current minimizes thermal load in densely packed chassis; FDIP32W window permits in-situ erasure during card-level rework. |
| Embedded Instrumentation Calibration Data | Military Avionics Test Equipment Memory |
|
Use Scenario: Retaining sensor calibration coefficients and linearization tables in portable multimeters and oscilloscope front-ends. IC Role / Device Role / Timing Role: Read-only data store accessed during self-test and measurement setup; not modified in field operation. Use Value: ECOPACK® ceramic package withstands thermal cycling and humidity exposure; 5V operation simplifies power design alongside analog signal chain. |
Use Scenario: Storing BIT (Built-In Test) routines and fault dictionaries in ground-support test sets for aircraft navigation systems. IC Role / Device Role / Timing Role: Secure, tamper-resistant firmware repository with physical UV window access controlled under maintenance procedures. Use Value: Manufacturer/device signature (20h/41h) validates authenticity during depot-level reprogramming; -40°C to 125°C rating covers hangar-to-flightline temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EPROM-based firmware storage applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C4001-12DC | 12ns access time; 5V-only programming (no VPP pin); PLCC32 package - lacks UV window and requires one-time programming. | Suitable for cost-sensitive, high-volume consumer electronics where field erasure is unnecessary. | Select only if firmware is final and UV reprogrammability is not required; verify compatibility with existing socket footprint. |
| MX27C4001PC-12 | 12ns access; 5V programming; PDIP32 package; no electronic signature; higher active current (45mA). | Used in legacy PC BIOS designs where fast read speed outweighs power and verification needs. | Choose when replacing failed units in vintage systems with identical pinout but no requirement for signature validation or low standby current. |
Compared with AM27C4001-12DC and MX27C4001PC-12, the M27C4001-10F1 uniquely combines UV erasability, electronic signature, and ultra-low standby current - making it the only viable choice for field-serviceable industrial and avionics applications requiring trusted reprogramming and thermal resilience.
Availability
M27C4001-10F1 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, telecom line card boot ROM, and embedded instrumentation calibration data requiring stable component supply across extended product lifecycles.
Supply support for M27C4001-10F1 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 strong heritage in non-volatile memory.
The M27C4001 belongs to ST's legacy EPROM product line, designed specifically for reliable, field-erasable firmware storage in mission-critical embedded systems where long-term data retention and physical reprogrammability are mandatory.
FAQ
What UV wavelength and exposure time are required to fully erase the M27C4001-10F1?
Full erasure requires short-wave ultraviolet light at 2537 Å with a minimum integrated dose of 15 W·sec/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 may cause partial erasure over ~3 years; direct sunlight can erase it in ~1 week.
Can the M27C4001-10F1 be programmed using a standard 5V-only programmer?
No. Programming requires a dedicated 12.75V ±0.25V supply on the VPP pin and 6.25V ±0.25V on VCC - both voltages are strictly specified and non-negotiable. Standard 5V programmers cannot meet these requirements and will fail to program or verify correctly.
Is the FDIP32W package compatible with standard DIP-32 sockets?
Yes - the FDIP32W has 0.6-inch body width and 0.1-inch lead pitch matching JEDEC MS-011, making it mechanically compatible with standard 32-pin DIP sockets. However, its ceramic construction and UV window require careful handling to avoid cracking and unintended erasure during insertion or storage.
How does the two-line output control (E and G) reduce system power consumption?
When E is high, the device enters CMOS standby mode drawing only 100 µA - independent of G state. This allows entire memory banks to be powered down while keeping G shared across devices for clean bus arbitration. In contrast, single-enable devices remain active (30 mA) even when outputs are disabled, wasting >99% of standby power.
M27C4001-10F1 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:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 100 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-CDIP Frit Seal with Window
M27C4001-10F1 FAQ
1.How can I place an order for M27C4001-10F1 through Aetrix?
Please submit a Request for Quotation (RFQ) for M27C4001-10F1 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 M27C4001-10F1 reliable?
The price and inventory of M27C4001-10F1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C4001-10F1 is usually 5 days.
3.What payment methods are accepted for M27C4001-10F1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C4001-10F1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M27C4001-10F1?
M27C4001-10F1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M27C4001-10F1 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 M27C4001-10F1?
For technical support, including M27C4001-10F1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C4001-10F1 requirements.
6.How does Aetrix verify that M27C4001-10F1 is sourced from the original manufacturer or authorized distributors?
All M27C4001-10F1 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 M27C4001-10F1 meets industry standards.
7.What is the process for return or replacement of M27C4001-10F1?
All M27C4001-10F1 units undergo pre-shipment inspection (PSI). If there is an issue with M27C4001-10F1, 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 M27C4001-10F1 part is unused and in its original packaging.
Return procedure for M27C4001-10F1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M27C4001-10F1 Tags
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