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STMicroelectronics M27C512-10F1
- Part No.:
- M27C512-10F1
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 28-CDIP (0.600", 15.24mm) Window
- Datasheet:
-
M27C512-10F1.pdf
- Description:
- IC EPROM 512KBIT PARALLEL 28CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,672
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Product details
Overview
M27C512-10F1 from STMicroelectronics is a 512 Kbit (64K × 8) UV-erasable EPROM in FDIP28W ceramic frit-seal package with transparent window, featuring 100 ns access time, 5 V ±10% read supply, 30 mA active current, 100 µA CMOS standby current, and 12.75 V ±0.25 V programming voltage. It supports PRESTO IIB algorithm for ~6 s programming and electronic signature (20h manufacturer code, 3Dh device code), used in legacy industrial control firmware storage where field erasability and long-term bit retention are required.
For engineers reviewing the M27C512-10F1 datasheet, M27C512-10F1 pinout, M27C512-10F1 application, or M27C512-10F1 equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in embedded boot memory and calibration storage, and validated alternative parts with documented functional trade-offs - all derived from ST's official May 2007 Rev 3 datasheet.
Technical Context
The M27C512-10F1 operates in three primary modes: Read (E and G low, VCC = 5 V), Standby (E high, outputs Hi-Z, ICC = 100 µA), and Programming (VPP = 12.75 V, E pulsed low, VCC = 6.25 V). Its two-line output control (E for device selection, G for output gating) enables low-power memory arrays without bus contention.
It implements Electronic Signature via A9 voltage forcing (11.5–12.5 V) to return manufacturer (20h) and device (3Dh) codes on Q7–Q0, and uses Margin Mode during programming verification to ensure cell-level reliability without overprogramming pulses - a key differentiator from basic EPROMs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (64K × 8) - provides full 64 KB addressable byte-wide storage for microcontroller boot code or configuration tables. |
| Access Time | 100 ns - defines maximum clock rate compatibility with 8-bit microcontrollers like Z80 or 8051 derivatives operating at ≤10 MHz. |
| Read Supply | 5 V ±10% - compatible with standard TTL/CMOS logic rails; no separate VPP required during read operation. |
| Standby Current | 100 µA (CMOS mode) - enables low-power retention in battery-backed systems or dormant firmware storage. |
| Programming Voltage | 12.75 V ±0.25 V on GVPP - requires dedicated EPROM programmer with regulated high-voltage supply; not compatible with standard 5 V-only programmers. |
| Erasure Method | UV light (2537 Å, ≥15 W·sec/cm²) through ceramic window - mandates physical exposure; not electrically erasable. |
| Electronic Signature | Manufacturer code 20h, Device code 3Dh - enables automatic algorithm selection in universal programmers; verified per Table 4 of datasheet. |
Pinout & Package
FDIP28W (28-pin Ceramic Frit-seal DIP with UV-transparent window), RoHS-compliant ECOPACK® package, 0.6-inch width, 36.8 mm body length, 15.2 mm body width, 7.1 mm window diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus interface; A0–A15 fully decoded to select one of 65,536 bytes; TTL-compatible inputs. |
| Q0–Q7 | Data Outputs | 8-bit bidirectional data bus during programming (data-in) and read (data-out); open-collector capable with pull-up. |
| E | Chip Enable | Active-low primary device select; drives device into standby (Hi-Z outputs, 100 µA) when high; must be pulsed low for programming. |
| G | Output Enable | Active-low secondary output gate; controls Q0–Q7 drive independently of E; enables shared bus architectures. |
| VCC | Supply Voltage | +5 V (read) or +6.25 V (programming); must be applied simultaneously with or before VPP and removed after VPP. |
| VSS | Ground | Reference return for all signals; requires local 0.1 µF ceramic decoupling per device per datasheet Section 2.4. |
| GVPP | Program Supply Input | Accepts 12.75 V ±0.25 V during programming; internally routed to memory array; not used in read mode. |
| A9 | Signature Address Line | Driven to 11.5–12.5 V to activate Electronic Signature mode; otherwise standard address input. |
Key Features
| Feature | Design Value |
|---|---|
| UV Erasability | Full array erasure via 15–20 min exposure to 2537 Å UV light; enables firmware revision cycles without component replacement. |
| PRESTO IIB Algorithm | Guaranteed <6.5 s programming time with margin-mode verify; eliminates need for iterative overprogram pulses and improves write endurance. |
| Two-Line Output Control | Independent E (device select) and G (output enable) pins reduce system power by placing deselected devices in standby (100 µA) while keeping G common. |
| Electronic Signature | Factory-programmed 20h/3Dh ID codes readable via A9 voltage forcing; ensures correct algorithm selection in automated programming stations. |
| ECOPACK® Compliance | Lead-free ceramic package meeting JEDEC JESD97 second-level interconnect marking; suitable for environmentally regulated industrial deployments. |
Applications
| Industrial PLC Firmware Storage | Legacy Automotive ECU Calibration |
|---|---|
|
Use Scenario: Storing ladder logic firmware in programmable logic controllers requiring field updates via UV erasure and reprogramming. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to CPU address space; accessed during power-on reset sequence with 100 ns timing budget. Use Value: UV window allows in-situ erasure without board removal; 100 µA standby current minimizes backup battery drain during extended downtime. |
Use Scenario: Holding engine calibration maps in pre-OBD-II automotive ECUs where software revisions occur infrequently but require absolute data integrity. IC Role / Device Role / Timing Role: Read-only configuration store; accessed only during initialization; tolerates 100 ns latency due to slow 8051-based controller bus. Use Value: Ceramic FDIP28W package withstands under-hood thermal cycling (–40°C to +125°C ambient); UV erasure prevents accidental overwrite during service. |
| Medical Device Bootloader | Avionics Test Equipment ROM |
|
Use Scenario: Storing certified bootloader code in Class II medical instruments where firmware immutability between regulatory audits is mandatory. IC Role / Device Role / Timing Role: Secure read-only memory holding cryptographic keys and startup validation routines; accessed once per power cycle. Use Value: Physical UV erasure provides auditable, non-electronic firmware reset method; ECOPACK® compliance meets IEC 60601-1 environmental requirements. |
Use Scenario: Providing fixed test pattern generation logic in ground-based avionics BIT (Built-In Test) equipment requiring zero-field failure risk. IC Role / Device Role / Timing Role: Static instruction ROM for microcoded test sequencers; timing-critical only during initial load; no runtime writes. Use Value: FDIP28W ceramic construction resists radiation-induced bit flips better than plastic packages; 15-year data retention verified per ST reliability reports. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar UV EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C512-10DC | 100 ns access, 28-pin PDIP, 5 V read, 12.5 V programming; no UV window; OTP-only (no erasure). | Used where firmware is truly one-time programmed and physical erasure is unnecessary; lower cost, no quartz window handling. | Select when field updates are prohibited and long-term archival stability outweighs reprogrammability. |
| MBM27C512-10P | 100 ns access, 28-pin PDIP, 5 V read, 12.5 V programming; Fujitsu-manufactured; identical pinout but different electronic signature (10h/3Dh). | Drop-in replacement in legacy Fujitsu-based systems; same timing but requires signature-aware programmer reconfiguration. | Select only if existing tooling supports Fujitsu ID codes; verify PRESTO IIB compatibility before deployment. |
Compared with AM27C512-10DC, M27C512-10F1 offers field-erasable capability at the cost of higher packaging complexity; versus MBM27C512-10P, it guarantees ST-specific programming algorithm support and ECOPACK® compliance, critical for new industrial designs.
Availability
M27C512-10F1 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy automotive ECU calibration, medical device bootloaders, and avionics BIT equipment requiring stable component supply across extended product lifecycles.
Supply support for M27C512-10F1 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, specializing in automotive, industrial, and power management ICs, with >50 years of nonvolatile memory design heritage.
The M27C512 belongs to ST's legacy EPROM product line, engineered specifically for high-reliability, long-lifecycle embedded systems where UV-erasable firmware persistence and backward compatibility with 1980s–1990s development infrastructure are essential.
FAQ
Is M27C512-10F1 compatible with modern 3.3 V systems?
No. The M27C512-10F1 requires 5 V ±10% for read operation and 6.25 V for programming; its input thresholds (VIH = 2 V, VIL = 0.8 V) are TTL/CMOS 5 V compatible only. Interfacing with 3.3 V microcontrollers requires level-shifting on address/data lines and strict isolation of VCC/GVPP supplies.
What UV lamp specifications are required for reliable erasure?
ST specifies 2537 Å short-wave UV light at ≥12,000 µW/cm² intensity, with minimum integrated dose of 15 W·sec/cm². Erasure takes 15–20 minutes at 2.5 cm distance; lamps with quartz sleeves (not standard glass) and unfiltered tubes are mandatory - fluorescent desk lamps or sunlight are insufficient and cause unpredictable partial erasure.
Can M27C512-10F1 be programmed using standard ISP or SPI interfaces?
No. It lacks serial programming logic or on-chip controllers. Programming requires parallel 8-bit data loading via Q0–Q7, precise 12.75 V GVPP application, 6.25 V VCC, and timed E pulses per PRESTO IIB waveform (Figure 4). Dedicated EPROM programmers (e.g., BP Microsystems Series) with UV-EPROM firmware profiles are mandatory.
Does the FDIP28W package support reflow soldering?
No. The ceramic frit-seal FDIP28W package is rated for wave soldering only (JEDEC J-STD-020 not applicable). Reflow exceeds its 200 °C peak limit and risks cracking the quartz window seal or delaminating the ceramic-to-metal interface; hand soldering with iron ≤350 °C and <3 s dwell per pin is permitted.
M27C512-10F1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 28-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:
- 512Kbit
- Memory Organization:
- 64K 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:
- 28-CDIP Frit Seal with Window
M27C512-10F1 FAQ
1.How can I place an order for M27C512-10F1 through Aetrix?
Please submit a Request for Quotation (RFQ) for M27C512-10F1 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 M27C512-10F1 reliable?
The price and inventory of M27C512-10F1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C512-10F1 is usually 5 days.
3.What payment methods are accepted for M27C512-10F1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C512-10F1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M27C512-10F1?
M27C512-10F1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M27C512-10F1 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 M27C512-10F1?
For technical support, including M27C512-10F1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C512-10F1 requirements.
6.How does Aetrix verify that M27C512-10F1 is sourced from the original manufacturer or authorized distributors?
All M27C512-10F1 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 M27C512-10F1 meets industry standards.
7.What is the process for return or replacement of M27C512-10F1?
All M27C512-10F1 units undergo pre-shipment inspection (PSI). If there is an issue with M27C512-10F1, 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 M27C512-10F1 part is unused and in its original packaging.
Return procedure for M27C512-10F1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M27C512-10F1 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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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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24AA02UIDT-I/OT
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