My Inquiry
My Account
STMicroelectronics M27C801-100F1
- Part No.:
- M27C801-100F1
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 32-CDIP (0.600", 15.24mm) Window
- Datasheet:
-
M27C801-100F1.pdf
- Description:
- IC EPROM 8MBIT PARALLEL 32CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,730
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
M27C801-100F1 from STMicroelectronics is an 8 Mbit (1,048,576 × 8) UV-erasable EPROM in FDIP32W ceramic frit-seal package with transparent window, supporting 5 V ±10% read supply, 55 ns access time, and 12.75 V ±0.25 V programming voltage. It delivers 35 mA active current at 5 MHz and 100 µA standby current, and features electronic signature (manufacturer code 20h, device code 42h) for automated programming equipment identification in embedded firmware development and legacy system rework.
For engineers reviewing the M27C801-100F1 datasheet, M27C801-100F1 pinout, M27C801-100F1 application, or M27C801-100F1 equivalent, this page provides verified functional specifications, FDIP32W terminal mapping, UV erasure timing guidance, Presto IIB programming algorithm support, and direct replacement options for industrial control PROM upgrades and microcontroller boot memory retrofits.
Technical Context
The M27C801-100F1 implements a two-line output control architecture using independent Chip Enable (E) and Output Enable (GVPP) signals to minimize bus contention and power dissipation in multi-device memory arrays. Its logic diagram confirms full TTL-compatible input levels (except A9 during Electronic Signature mode), with E controlling power state and GVPP gating output drivers.
It supports three distinct operational modes beyond standard read: Standby (CMOS-high E → 100 µA ICC2), Programming (VPP = 12.75 V, E pulsed low, VCC = 6.25 V ±0.25 V), and Electronic Signature (A9 = 11.5–12.5 V, A0 toggled to read 20h/42h codes). Margin Mode verification ensures reliable cell programming without overprogramming pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 8 Mbit (1,048,576 × 8 organization), enabling full 1 MB boot code storage for 8-bit microcontrollers |
| Access Time | 55 ns (tAVQV, tELQV), compatible with 18 MHz Z80 or 8051-based systems requiring fast instruction fetch |
| Read Supply | 5 V ±10%, eliminating need for dedicated 6.25 V programming rail during normal operation |
| Programming Voltage | 12.75 V ±0.25 V on GVPP pin, requiring external high-voltage generator but ensuring reliable Fowler-Nordheim tunneling |
| Standby Current | 100 µA (ICC2, CMOS E high), critical for low-power battery-backed configuration storage in legacy instrumentation |
| Electronic Signature | Manufacturer code 20h (STMicroelectronics), Device code 42h - enables automatic algorithm selection in universal programmers like Data I/O PS-3000 |
| UV Erase Dose | ≥30 W·sec/cm² at 2537 Å wavelength, requiring ~35 min exposure at 12,000 µW/cm² for full bit reset |
Pinout & Package
FDIP32W (32-pin ceramic frit-seal DIP with round UV-transparent window), 0.6-inch width, 0.3-inch height, 0.1-inch lead pitch, JEDEC MS-012 compliant. Designed for long-term data retention (>10 years) and repeat UV erasure cycles (≥1,000).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address inputs | 20-bit address bus accepting full 1 MB linear addressing; A9 used as VID select during Electronic Signature mode |
| Q0–Q7 | Data outputs | 8-bit bidirectional data bus - outputs valid only when E and GVPP both low; latched during programming |
| E | Chip Enable | Active-low primary device select; high → standby mode (100 µA); pulsed low during programming |
| GVPP | Output Enable / Program Supply | Low → output enabled in read mode; 12.75 V applied during programming; dual-function pin reduces PCB routing complexity |
| VCC | Supply voltage | 5 V ±10% for read; must be applied before/with VPP and removed after VPP to prevent latch-up |
| VSS | Ground | Reference for all I/O and internal logic; requires local 0.1 µF ceramic decoupling per device |
Key Features
| Feature | Design Value |
|---|---|
| Two-line output control (E + GVPP) | Eliminates bus contention in multi-chip memory banks by decoupling power enable from output gating |
| Presto IIB programming algorithm | Guarantees margin-safe programming via 50 µs pulses and margin-mode verify - no overprogram risk |
| Electronic Signature (20h/42h) | Enables zero-configuration auto-detection in production programmers, reducing setup errors in high-mix manufacturing |
| ECOPACK® compliance | Lead-free ceramic package meeting JEDEC JESD97 interconnect marking requirements for RoHS-compliant legacy repair |
| UV erasable window (FDIP32W) | Allows field reprogramming of firmware in deployed equipment without chip replacement - critical for aerospace ground support units |
Applications
| Industrial PLC Firmware Storage | Legacy Microcontroller Boot ROM |
|---|---|
Use Scenario: Storing ladder logic and I/O configuration in DIN-rail mounted programmable logic controllers manufactured 1995–2005. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to CPU address space 0x000000–0x0FFFFF; accessed at power-on reset with 55 ns tACC. Use Value: UV erasability allows firmware updates in situ without removing controller from panel - reducing downtime during machine retrofit projects. | Use Scenario: Providing fixed startup code for Zilog Z80 or Intel 8051-based test equipment where flash memory was unavailable or unreliable. IC Role / Device Role / Timing Role: Memory-mapped instruction ROM executing from reset vector; driven by synchronous clock ≤18 MHz. Use Value: 35 mA active current and 100 µA standby enable operation in fanless enclosures with minimal thermal design overhead. |
| Aerospace Ground Support PROM | Medical Device Configuration Memory |
Use Scenario: Storing calibration constants and self-test routines in avionics bench testers used for F-16 and C-130 maintenance depots. IC Role / Device Role / Timing Role: OTP-capable EPROM (when sealed) or UV-erasable (when windowed) holding mission-critical initialization vectors. Use Value: Ceramic FDIP32W package withstands thermal cycling and vibration profiles exceeding MIL-STD-810G, ensuring data integrity across 20+ year service life. | Use Scenario: Retaining user-selectable operating modes and safety thresholds in Class IIa electrocardiogram analyzers certified under IEC 60601-1. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed only during power-up sequence; isolated from real-time signal path. Use Value: ECOPACK® lead-free construction satisfies medical RoHS requirements while maintaining compatibility with existing solder reflow profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C801-100DC | Same 8 Mbit ×8 organization, 55 ns access, but uses AMD's proprietary programming algorithm and 12.5 V ±0.5 V VPP | No electronic signature (20h/42h); requires manual algorithm selection in programmers | Select only if existing AM27C801 tooling and firmware images are reused; not drop-in for ST-based systems |
| MX27C801-10PC | 100 ns access time (vs. 55 ns), 40 mA active current, PLCC32 package - no UV window | OTP-only; cannot be erased or reprogrammed post-soldering | Choose for cost-sensitive, single-build applications where field updates are unnecessary and surface-mount assembly is preferred |
Compared with AM27C801-100DC and MX27C801-10PC, the M27C801-100F1 uniquely combines UV erasability, 55 ns speed, electronic signature automation, and ceramic hermeticity - making it the sole option for field-reprogrammable, high-reliability legacy system maintenance where timing and programmer interoperability are non-negotiable.
Availability
M27C801-100F1 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot ROM, aerospace ground support PROM, and medical device configuration memory requiring stable component supply across extended product lifecycles.
Supply support for M27C801-100F1 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, designing and manufacturing analog, MCU, power, and memory products for industrial, automotive, and consumer markets.
The M27C801 belongs to ST's legacy EPROM product line, engineered specifically for high-reliability, long-lifecycle embedded systems requiring field-upgradable firmware storage with proven UV-erasable technology.
FAQ
What UV wavelength and exposure time are required to fully erase the M27C801-100F1?
The M27C801-100F1 requires short-wave ultraviolet light at 2537 Å wavelength. A minimum integrated dose of 30 W·sec/cm² is needed - achievable in 30–40 minutes using a 12,000 µW/cm² lamp with the device placed within 2.5 cm of the source. Direct sunlight causes partial erasure in ~1 week; ambient fluorescent lighting may erase over ~3 years.
Can the M27C801-100F1 be programmed using standard 5 V logic levels?
No. Programming requires VPP = 12.75 V ±0.25 V applied to the GVPP pin and VCC = 6.25 V ±0.25 V during pulse application. Address and data lines use standard TTL levels (0.8 V/2.0 V thresholds), but the high-voltage programming supply must be generated externally - typically via a dedicated programmer or DC-DC converter.
Is the FDIP32W package RoHS compliant?
Yes. The M27C801-100F1 is offered in ECOPACK®-compliant FDIP32W packaging, which is lead-free and meets JEDEC JESD97 second-level interconnect marking requirements. The inner box label indicates lead-free status, and soldering profiles comply with IPC/JEDEC J-STD-020 moisture sensitivity level 3 guidelines.
How does the two-line output control (E and GVPP) improve system reliability?
Separating chip selection (E) from output gating (GVPP) prevents bus contention when multiple EPROMs share a data bus. With E decoded per device and GVPP tied to a common READ signal, only one device drives the bus at any time - eliminating shoot-through current, reducing EMI, and allowing safe insertion/removal of memory modules without powering down the entire system.
M27C801-100F1 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:
- 8Mbit
- Memory Organization:
- 1M 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
M27C801-100F1 FAQ
1.How can I place an order for M27C801-100F1 through Aetrix?
Please submit a Request for Quotation (RFQ) for M27C801-100F1 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 M27C801-100F1 reliable?
The price and inventory of M27C801-100F1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C801-100F1 is usually 5 days.
3.What payment methods are accepted for M27C801-100F1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C801-100F1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M27C801-100F1?
M27C801-100F1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M27C801-100F1 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 M27C801-100F1?
For technical support, including M27C801-100F1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C801-100F1 requirements.
6.How does Aetrix verify that M27C801-100F1 is sourced from the original manufacturer or authorized distributors?
All M27C801-100F1 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 M27C801-100F1 meets industry standards.
7.What is the process for return or replacement of M27C801-100F1?
All M27C801-100F1 units undergo pre-shipment inspection (PSI). If there is an issue with M27C801-100F1, 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 M27C801-100F1 part is unused and in its original packaging.
Return procedure for M27C801-100F1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M27C801-100F1 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
