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STMicroelectronics M27C4001-80XF1
- Part No.:
- M27C4001-80XF1
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 32-CDIP (0.600", 15.24mm) Window
- Datasheet:
-
M27C4001-80XF1.pdf
- Description:
- IC EPROM 4MBIT PARALLEL 32CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,835
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Product details
Overview
M27C4001-80XF1 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 controller boot memory and embedded instrumentation BIOS.
For engineers reviewing the M27C4001-80XF1 datasheet, M27C4001-80XF1 pinout, M27C4001-80XF1 application, or M27C4001-80XF1 equivalent, key selection criteria include UV erasability, TTL-compatible control timing, dual-line output enable architecture, and ECOPACK®-compliant lead-free ceramic packaging for long-term archival reliability.
Technical Context
The M27C4001-80XF1 implements a two-line output control architecture with independent Chip Enable (E) and Output Enable (G) inputs: E governs power state (active/standby), while G gates data to Q0–Q7 outputs without affecting power consumption. This enables low-power deselection of unaddressed devices in multi-chip memory arrays.
It supports three primary operational modes: Read (VCC = 5V, VPP = VCC), Programming (VCC = 6.25V, VPP = 12.75V, E pulsed low), and Electronic Signature (12V on A9, VCC = 5V). Erasure requires UV exposure (2537 Å, ≥15 W·s/cm²) through its quartz window, with verified retention >10 years post-erase.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Mbit (524,288 × 8 bits) - supports full 19-bit address space for 512KB firmware images |
| Access Time | 35 ns - meets timing requirements for 25 MHz Z80/8086 bus cycles with margin |
| Supply Voltage | 5 V ±10% - compatible with standard TTL/CMOS logic rails without regulation |
| Active Current | 30 mA at 5 MHz - enables stable operation under sustained read bursts |
| Standby Current | 100 µA - reduces system quiescent power by >99% during idle periods |
| Programming Voltage | 12.75 V ±0.25 V - precise high-voltage rail required for oxide breakdown programming |
| UV Erase Dose | ≥15 W·s/cm² at 2537 Å - ensures complete bit reset within 15–20 min using commercial EPROM erasers |
Pinout & Package
FDIP32W: 32-pin ceramic dual in-line package with UV-transparent quartz window, frit-seal construction, ECOPACK® compliant (lead-free), 0.6 inch width, 0.3 inch height, 0.1 inch pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit parallel address bus; A9 carries 12V for Electronic Signature mode |
| Q0–Q7 | Data Outputs | 8-bit bidirectional data bus used for both read output and programming input |
| E | Chip Enable | Active-low device select; VIH > VCC–0.2V places device in 100µA standby |
| G | Output Enable | Active-low output gate; controls Q0–Q7 Hi-Z vs. driven state independently of E |
| VPP | Programming Supply | 12.75V input enabling Fowler-Nordheim tunneling during byte programming |
| VCC | Power Supply | 5V for read/standby; 6.25V for programming - must be applied before/with VPP |
| VSS | Ground | Reference return for all DC and AC signals; decoupling requires 0.1µF ceramic per device |
Key Features
| Feature | Design Value |
|---|---|
| UV Erasability | Full array erase via 2537 Å UV light enables firmware revision without device replacement |
| Dual-Line Control | Independent E and G inputs allow hierarchical memory banking with zero bus contention |
| Electronic Signature | Manufacturer code 20h and device code 41h support automated programmer identification and algorithm selection |
| PRESTO II Algorithm | Guaranteed margin programming with 100 µs pulses and automatic verify eliminates over-programming risk |
| ECOPACK® Compliance | Lead-free ceramic packaging meets JEDEC JESD97 interconnect standards for RoHS-constrained legacy systems |
Applications
| Industrial PLC Firmware Storage | Legacy Microcontroller Boot ROM |
|---|---|
Use Scenario: Storing ladder logic interpreter and I/O configuration tables in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Non-volatile boot memory mapped to CPU address space; accessed during cold start and firmware update cycles. Use Value: UV erasability allows field updates of control logic without board replacement; 35ns access ensures deterministic scan cycle timing. | Use Scenario: Holding initialization code and interrupt vector table for Z80- or 8086-based embedded controllers in test equipment. IC Role / Device Role / Timing Role: Primary instruction ROM executing on power-up; synchronized to CPU clock via E/G timing margins. Use Value: Dual-line control prevents bus conflicts during multi-ROM bank switching; 100µA standby extends battery-backed runtime. |
| Avionics Maintenance Diagnostic Module | Medical Imaging System BIOS |
Use Scenario: Storing calibration routines and fault-tree diagnostics in airborne maintenance terminals certified to DO-160 environmental stress levels. IC Role / Device Role / Timing Role: Secure, tamper-resistant firmware store with physical UV window lockout via opaque label. Use Value: Ceramic FDIP32W package withstands thermal shock and vibration; ECOPACK® compliance satisfies aerospace Pb-free mandates. | Use Scenario: Hosting boot firmware and hardware initialization sequences for X-ray detector control boards requiring FDA-cleared traceability. IC Role / Device Role / Timing Role: First-executed code after power-on reset; validates RAM and configures FPGA peripherals. Use Value: 10-year data retention post-UV erase meets medical device lifecycle requirements; PRESTO II programming ensures field-reprogrammability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar UV-erasable EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C4001-80DC | Same 4Mbit organization and 35ns speed, but uses AMD's proprietary programming algorithm and lacks ST's Electronic Signature codes (20h/41h) | Requires AMD-specific programmers; not auto-recognized by ST-compatible tools | Select only when existing AMD toolchain and firmware infrastructure are in place |
| MX27C4001-80PC | Pin-compatible but rated for 45ns access; higher standby current (200µA); no ECOPACK® certification | Not suitable for battery-backed or thermally constrained environments where 100µA standby is critical | Acceptable for cost-sensitive, non-archival applications where UV window durability is secondary |
Compared with AM27C4001-80DC and MX27C4001-80PC, the M27C4001-80XF1 provides guaranteed 35ns timing, industry-standard Electronic Signature, and ECOPACK®-certified ceramic packaging-making it the sole choice for long-lifecycle, field-erasable, and regulatory-compliant legacy system upgrades.
Availability
M27C4001-80XF1 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot ROM, and avionics diagnostic modules requiring stable component supply across extended product lifecycles.
Supply support for M27C4001-80XF1 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, specializing in automotive, industrial, and power management ICs with strong heritage in non-volatile memory design.
The M27C series was engineered specifically for high-reliability, field-erasable program storage in mission-critical embedded systems where firmware longevity and physical security outweigh density or speed demands.
FAQ
What UV wavelength and exposure time are required to fully erase the M27C4001-80XF1?
The M27C4001-80XF1 requires short-wave ultraviolet light at 2537 Å with a minimum integrated dose of 15 W·s/cm². Using a commercial EPROM eraser rated at 12,000 µW/cm², full erasure is achieved in 15–20 minutes with the device placed within 2.5 cm of the lamp tubes. Direct sunlight may cause partial erasure in ~1 week.
Can the M27C4001-80XF1 be programmed using standard 5V-only programmers?
No. Programming requires simultaneous application of 6.25V ±0.25V on VCC and 12.75V ±0.25V on VPP, with E pulsed low and G held high. Standard 5V-only programmers cannot generate the required VPP voltage and will fail to program the device. Dedicated EPROM programmers supporting PRESTO II algorithm are mandatory.
Is the FDIP32W package of the M27C4001-80XF1 RoHS-compliant?
Yes. The FDIP32W package is ECOPACK®-compliant and lead-free, meeting JEDEC JESD97 second-level interconnect marking requirements. The "ECOPACK®" designation on the package and inner box label confirms RoHS compliance, and full specifications are published on st.com.
How does the two-line output control (E and G) improve system-level memory design?
The separate E (Chip Enable) and G (Output Enable) lines allow hierarchical memory management: E selects active devices and controls power state (30mA ↔ 100µA), while G gates outputs without changing power draw. This eliminates bus contention in multi-ROM systems and enables dynamic power gating-critical for low-quiescent industrial controllers.
M27C4001-80XF1 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:
- 80 ns
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-CDIP Frit Seal with Window
M27C4001-80XF1 FAQ
1.How can I place an order for M27C4001-80XF1 through Aetrix?
Please submit a Request for Quotation (RFQ) for M27C4001-80XF1 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 M27C4001-80XF1 reliable?
The price and inventory of M27C4001-80XF1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C4001-80XF1 is usually 5 days.
3.What payment methods are accepted for M27C4001-80XF1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C4001-80XF1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M27C4001-80XF1?
M27C4001-80XF1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M27C4001-80XF1 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 M27C4001-80XF1?
For technical support, including M27C4001-80XF1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C4001-80XF1 requirements.
6.How does Aetrix verify that M27C4001-80XF1 is sourced from the original manufacturer or authorized distributors?
All M27C4001-80XF1 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 M27C4001-80XF1 meets industry standards.
7.What is the process for return or replacement of M27C4001-80XF1?
All M27C4001-80XF1 units undergo pre-shipment inspection (PSI). If there is an issue with M27C4001-80XF1, 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 M27C4001-80XF1 part is unused and in its original packaging.
Return procedure for M27C4001-80XF1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M27C4001-80XF1 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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