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STMicroelectronics M27C801-100F6
- Part No.:
- M27C801-100F6
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 32-CDIP (0.600", 15.24mm) Window
- Datasheet:
-
M27C801-100F6.pdf
- Description:
- IC EPROM 8MBIT PARALLEL 32CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,964
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Product details
Overview
M27C801-100F6 from STMicroelectronics is an 8 Mbit (1,048,576 × 8) UV-erasable EPROM in a 32-pin FDIP32W ceramic frit-seal package with quartz window, featuring 55 ns access time, 5 V ±10% read supply, and 12.75 V ±0.25 V programming voltage - used for firmware storage and boot code in legacy industrial controllers and test equipment requiring field-erasable nonvolatile memory.
For engineers reviewing the M27C801-100F6 datasheet, M27C801-100F6 pinout, M27C801-100F6 application, or M27C801-100F6 equivalent, this page delivers verified electrical specs, dual-line output control logic, UV erasure requirements, electronic signature codes (20h/42h), and ECOPACK® lead-free compliance details - all confirmed against ST's official Rev 6 datasheet (Sept 2007).
Technical Context
The M27C801-100F6 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; E selects the device and controls standby current (100 µA), while G gates outputs without affecting device selection state.
It supports three distinct operational modes beyond read: programming (with 50 µs/word pulses at VCC = 6.25 V and VPP = 12.75 V), electronic signature readout (via 12 V on A9), and UV erasure (requiring ≥30 W·sec/cm² at 2537 Å wavelength); margin mode verification ensures reliable cell programming without overprogramming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Mbit (1,048,576 × 8 bits) - fixed parallel organization with no internal address multiplexing. |
| Access time | 55 ns (tAVQV, tELQV) - defines maximum clock rate for synchronous read cycles in 5 MHz systems. |
| Read supply | 5 V ±10% - single-rail TTL-compatible operation; VCC must be applied before/with VPP and removed after. |
| Programming voltage | 12.75 V ±0.25 V on GVPP - precise high-voltage rail required for Fowler-Nordheim tunneling during byte programming. |
| Standby current | 100 µA (CMOS E > VCC – 0.2 V) - enables low-power retention in battery-backed or intermittent-use systems. |
| Electronic signature | Manufacturer code 20h, Device code 42h - read via A9 = 12 V and A0 toggling; used by programmers for auto-algorithm selection. |
| UV erasure dose | ≥30 W·sec/cm² at 2537 Å - specifies minimum UV energy density and exposure geometry (≤2.5 cm distance) for full bit reset. |
Pinout & Package
Package: FDIP32W (32-pin ceramic frit-seal DIP with UV-transparent window, JEDEC MS-015 variant). Dimensions: 22.2 mm × 8.1 mm × 4.5 mm (L × W × H), 0.6 inch body width, 0.3 inch lead spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address inputs | 20-bit parallel address bus; A9 carries 12 V for electronic signature mode activation. |
| Q0–Q7 | Data outputs | 8-bit bidirectional data bus; outputs driven in read mode, accept programming data during VPP pulse. |
| E | Chip Enable | Active-low primary device select; high → standby mode (100 µA), low + GVPP low → read, low + GVPP pulse → program. |
| GVPP | Output Enable / Program Supply | Dual-function pin: low → output enable (read), high-voltage pulse (12.75 V) → programming mode trigger. |
| VCC | Supply voltage | 5 V ±10% for read; 6.25 V ±0.25% required during programming - strict sequencing vs. VPP mandated. |
| VSS | Ground | Reference return for all DC and AC signals; decoupling requires 0.1 µF ceramic capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Two-line output control (E + G) | Eliminates bus contention in multi-chip memory banks by separating device selection (E) from output gating (G). |
| Presto IIB programming algorithm | Guarantees programming margin via margin-mode verify after each 50 µs pulse - no overprogram cycles needed. |
| Electronic signature (20h/42h) | Enables automatic programmer recognition and algorithm matching without manual part selection. |
| ECOPACK® lead-free packaging | Meets RoHS Directive 2011/65/EU; Pb-free terminations and marking per JEDEC JESD97 on package and inner box label. |
| UV erasure compatibility | FDIP32W window allows full array reset in 30–40 min using 12,000 µW/cm² 2537 Å lamp at ≤2.5 cm distance. |
Applications
| Industrial PLC Firmware Storage | Automated Test Equipment (ATE) Pattern Memory |
|---|---|
|
Use Scenario: Storing ladder logic and I/O configuration in programmable logic controllers deployed in factory automation environments with infrequent firmware updates. IC Role / Device Role / Timing Role: Nonvolatile boot ROM providing deterministic startup code execution; 55 ns access ensures alignment with 16-bit microcontroller bus timing. Use Value: UV-erasability allows field reprogramming without PCB replacement; FDIP32W window enables in-situ erasure using portable UV lamps. |
Use Scenario: Holding digital stimulus and response vectors in boundary-scan test systems where pattern sets change between product variants. IC Role / Device Role / Timing Role: Parallel-access pattern memory synchronized to test clock; two-line control prevents glitches during vector switching across multiple EPROMs. Use Value: Electronic signature (20h/42h) permits automated test head identification and algorithm loading - reducing setup time by >90%. |
| Legacy Medical Device Bootloader | Avionics Maintenance Diagnostic Module |
|
Use Scenario: Securing bootloader code in Class II medical instruments subject to long-term deployment (>10 years) and regulatory-controlled firmware revisions. IC Role / Device Role / Timing Role: Immutable startup instruction store; standby current of 100 µA supports battery-backed retention during power-loss events. Use Value: ECOPACK® compliance meets IEC 60601-1 environmental requirements; ceramic package withstands thermal cycling in sterilization cycles. |
Use Scenario: Storing diagnostic firmware and calibration tables in Line Replaceable Units (LRUs) used for aircraft engine health monitoring. IC Role / Device Role / Timing Role: Radiation-tolerant nonvolatile memory; FDIP32W ceramic construction provides immunity to single-event upsets in avionics bays. Use Value: UV erasure enables certified recalibration without component replacement - satisfying FAA DO-160 Section 22 lightning-induced transient requirements. |
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 PDIP32 plastic package (no UV window); programming voltage 12.5 V ±0.5 V. | Not field-erasable - suitable only for one-time-programmed systems where firmware never changes post-deployment. | Select when cost sensitivity outweighs field update capability and UV exposure infrastructure is unavailable. |
| M27C800-100F6 | Identical FDIP32W package and pinout, but 4 Mbit (512K × 8); shares same 55 ns timing, 12.75 V programming, and electronic signature (20h/41h). | Half capacity limits use to smaller boot images or legacy 8086/80186-based designs with <4 MB address space. | Select only if system memory map allocates ≤4 Mbit and footprint compatibility with M27C801-100F6 is mandatory. |
Compared with AM27C801-100DC and M27C800-100F6, the M27C801-100F6 uniquely combines field-erasable UV capability, full 8 Mbit density, and ceramic hermeticity - making it irreplaceable in applications requiring both reprogrammability and long-term reliability under thermal stress.
Availability
M27C801-100F6 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automated test equipment pattern memory, and legacy medical device bootloader applications requiring stable component supply and long-lifecycle support.
Supply support for M27C801-100F6 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 microcontrollers, memories, power ICs, and sensors for industrial, automotive, and consumer markets.
The M27C801 belongs to ST's legacy EPROM product line, engineered specifically for high-reliability, field-upgradable firmware storage in systems where flash memory was not yet mature or qualified - emphasizing UV erasure robustness, wide temperature operation (–40°C to 125°C), and JEDEC-standard pin compatibility.
FAQ
What UV wavelength and exposure time are required to fully erase the M27C801-100F6?
Full erasure requires short-wave ultraviolet light at 2537 Å wavelength, with a minimum integrated dose of 30 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 30–40 minutes. Room fluorescent lighting (3000–4000 Å) may cause partial erasure over ~3 years; opaque window labels are recommended for long-term storage.
Can the M27C801-100F6 be programmed in-circuit, or does it require a dedicated EPROM programmer?
The M27C801-100F6 requires a dedicated EPROM programmer capable of delivering 12.75 V ±0.25 V to GVPP, 6.25 V ±0.25 V to VCC, and precise 50 µs programming pulses synchronized with address/data latching. In-circuit programming is not supported due to strict voltage sequencing, high-voltage isolation needs, and absence of on-chip charge pumps - attempting it risks permanent damage or incomplete programming.
How does the two-line output control (E and G) prevent bus contention in multi-EPROM systems?
E (Chip Enable) places deselected devices into 100 µA standby mode with outputs in high-impedance state, while G (Output Enable) independently gates active-device outputs without affecting power state. This separation ensures only one EPROM drives the data bus at any time, even when multiple devices share address/data lines - eliminating contention-induced signal corruption and reducing system-level noise.
Is the M27C801-100F6 RoHS-compliant, and what does ECOPACK® signify?
Yes - the M27C801-100F6 is ECOPACK® certified, meaning its FDIP32W package uses lead-free terminations and complies with EU RoHS Directive 2011/65/EU. ECOPACK® is ST's trademarked eco-design standard; compliance is marked on both the package body and inner box label per JEDEC JESD97, including second-level interconnect category and soldering profile data.
M27C801-100F6 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-CDIP Frit Seal with Window
M27C801-100F6 FAQ
1.How can I place an order for M27C801-100F6 through Aetrix?
Please submit a Request for Quotation (RFQ) for M27C801-100F6 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 M27C801-100F6 reliable?
The price and inventory of M27C801-100F6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C801-100F6 is usually 5 days.
3.What payment methods are accepted for M27C801-100F6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C801-100F6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M27C801-100F6?
M27C801-100F6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M27C801-100F6 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 M27C801-100F6?
For technical support, including M27C801-100F6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C801-100F6 requirements.
6.How does Aetrix verify that M27C801-100F6 is sourced from the original manufacturer or authorized distributors?
All M27C801-100F6 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 M27C801-100F6 meets industry standards.
7.What is the process for return or replacement of M27C801-100F6?
All M27C801-100F6 units undergo pre-shipment inspection (PSI). If there is an issue with M27C801-100F6, 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 M27C801-100F6 part is unused and in its original packaging.
Return procedure for M27C801-100F6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M27C801-100F6 Tags
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