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STMicroelectronics M27C1001-15B1
- Part No.:
- M27C1001-15B1
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
M27C1001-15B1.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,494
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Product details
Overview
M27C1001-15B1 from STMicroelectronics is a 1 Mbit (131,072 × 8) UV-erasable EPROM in a 32-pin PDIP package, operating at 5V ±10%, with 150 ns access time, 30 mA active current at 5 MHz, and 100 µA standby current. It supports electronic signature (Manufacturer Code 20h, Device Code 05h) and is used in legacy microprocessor systems for firmware storage requiring field-erasable non-volatility.
For engineers reviewing the M27C1001-15B1 datasheet, M27C1001-15B1 pinout, M27C1001-15B1 application, or M27C1001-15B1 equivalent, key selection criteria include UV erasure capability, dual-line control (E/G), TTL-compatible timing, 12.75 V programming voltage, and compatibility with PRESTO II programming algorithms in industrial embedded boot memory designs.
Technical Context
The M27C1001-15B1 implements a two-line output control architecture using Chip Enable (E) for power gating and Output Enable (G) for bus contention avoidance-enabling low-power array operation and deterministic high-impedance states during deselect. Its read mode requires simultaneous E and G low to drive Q0–Q7 outputs, with address-to-output valid delay tAVQV = 150 ns under standard AC conditions.
Programming uses 12.75 V ±0.25 V on VPP, 6.25 V ±0.25 V on VCC, and a 100 µs pulse on P with E low; data is latched on Q0–Q7 pins acting as bidirectional I/O during programming. Electronic signature mode activates via 11.5–12.5 V on A9 while VPP = VCC = 5 V, enabling automatic device identification by programmers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Mbit (131,072 words × 8 bits) - supports full 16-bit address space with A0–A16 inputs |
| Access Time | 150 ns - defines maximum clock rate for synchronous read cycles in microprocessor bus interfaces |
| Supply Voltage | 5 V ±10% - compatible with legacy TTL/CMOS logic rails without regulation overhead |
| Active Current | 30 mA at 5 MHz - enables thermal budgeting for multi-device memory banks on PCBs |
| Standby Current | 100 µA - allows battery-backed retention in low-power maintenance modes |
| Programming Voltage | VPP = 12.75 V ±0.25 V - requires dedicated HV supply rail; not compatible with standard 5 V-only systems |
| Electronic Signature | Manufacturer Code 20h / Device Code 05h - enables auto-detection and algorithm matching in universal EPROM programmers |
Pinout & Package
Package: PDIP32 (32-pin plastic dual in-line package, 600 mil width, JEDEC MS-011AC). Pinout validated per Figure 2A and Table 1 of STMicroelectronics datasheet M27C1001 Rev. June 2002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 131K-word decoding; A9 used for electronic signature voltage injection |
| Q0–Q7 | Data Outputs / Programming Inputs | Bidirectional: outputs during read/verify; latched data inputs during programming mode |
| E | Chip Enable | Primary power control; CMOS high places device in 100 µA standby; TTL low enables read/program |
| G | Output Enable | Secondary output gate; independent of E, prevents bus contention when multiple EPROMs share data lines |
| P | Program Control | Active-low pulse input; initiates programming cycle only when E = low and VPP = 12.75 V |
| VPP | Programming Supply | 12.75 V ±0.25 V input; must be applied simultaneously with or after VCC and removed simultaneously or before VCC |
| VCC | Supply Voltage | 5 V ±10% for read; 6.25 V ±0.25 V for programming - dual-rail requirement mandates voltage switching circuitry |
| VSS | Ground | Reference for all I/O and supply pins; decoupling requires 0.1 µF ceramic capacitor placed adjacent to pin |
| NC | No Connect | Pin 18 (per Figure 2A); internally unconnected - must remain floating or grounded per board layout rules |
Key Features
| Feature | Design Value |
|---|---|
| UV Erasability | Full array erasure in 15–20 min using 2537 Å UV lamp at ≥15 W·sec/cm² dose - enables firmware revision in deployed systems |
| Dual-Line Output Control | E and G pins allow hierarchical bus management: E selects device into low-power state, G gates output drivers - eliminates bus contention in multi-chip memory maps |
| PRESTO II Programming Algorithm | Guarantees margin-safe programming in ≤13 sec via iterative 100 µs pulses and margin-mode verify - eliminates overprogramming and cell wear |
| Electronic Signature Mode | Reads manufacturer (20h) and device (05h) codes via A9 voltage injection - ensures correct algorithm selection in automated programming stations |
| Wide Temperature Range | Rated for –40 °C to 125 °C operation - suitable for industrial control panels and automotive under-hood ECUs with extended thermal cycling |
Applications
| Industrial PLC Firmware Storage | Legacy Automotive ECU Boot ROM |
|---|---|
|
Use Scenario: Storing ladder logic firmware in programmable logic controllers subject to infrequent updates and long service life. IC Role / Device Role / Timing Role: Non-volatile boot memory mapped to CPU address space; accessed during power-on reset sequence with 150 ns timing compliance. Use Value: UV erasability allows field firmware patching without board replacement; 100 µA standby current minimizes backup battery drain during maintenance shutdowns. |
Use Scenario: Holding engine calibration tables and startup routines in pre-OBD-II automotive control units where reprogramming infrastructure is limited. IC Role / Device Role / Timing Role: Primary boot ROM executing initial hardware initialization and checksum validation prior to loading RAM-based runtime code. Use Value: 125 °C rating ensures reliability in under-hood environments; electronic signature enables automated verification during factory flash programming. |
| Military Communications Radio BIOS | Avionics Display System Loader |
|
Use Scenario: Storing secure bootloader and cryptographic keys in tactical radios requiring tamper-resistant, field-upgradable firmware. IC Role / Device Role / Timing Role: Read-only memory holding immutable startup instructions; accessed via discrete address/data bus with strict 150 ns setup/hold timing. Use Value: Ceramic FDIP variant (not B1) offers hermetic sealing; UV window allows post-deployment key revocation via controlled erasure. |
Use Scenario: Loading display controller microcode and font assets in certified cockpit displays where software integrity is mandated by DO-178C. IC Role / Device Role / Timing Role: Memory-mapped peripheral providing graphics initialization data to FPGA-based video pipeline during cold start. Use Value: PRESTO II programming guarantees bit-level margin across temperature extremes; dual-line control prevents display corruption during bus arbitration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C1001-15DC | Same 1 Mbit ×8 organization, 150 ns access, 5 V supply; but uses AMD's proprietary programming algorithm and lacks ST's PRESTO II margin verification. | Compatible in pinout and DC specs, but requires AMD-specific programmer firmware; no electronic signature codes match ST's 20h/05h. | Select only if existing AMD toolchain is in place; not recommended for new designs due to discontinued support and lack of margin-safe verify. |
| MX27C1001-15PC | Macronix version with identical PDIP32 footprint and 150 ns speed grade; verified 12.75 V VPP tolerance and same A9-based electronic signature structure. | Drop-in replacement for read/program/erase functions; signature codes differ (Macronix = 37h), requiring minor programmer configuration update. | Valid second-source option with active production status; preferred when ST supply continuity is constrained, provided signature handling is updated. |
Compared with AM27C1001-15DC, M27C1001-15B1 provides guaranteed programming margin via PRESTO II and standardized ST signature codes; versus MX27C1001-15PC, it offers identical functionality with longer-established qualification history in aerospace and industrial deployments.
Availability
M27C1001-15B1 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy automotive ECU boot ROM, and military communications radio BIOS requiring stable component supply across extended product lifecycles.
Supply support for M27C1001-15B1 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 ISO/TS 16949 and AEC-Q100 qualified manufacturing.
The M27C1001 belongs to ST's legacy EPROM product line designed for high-reliability, field-erasable firmware storage in systems where NAND/NOR flash was not yet mature or cost-effective.
FAQ
What UV wavelength and exposure dose are required to fully erase the M27C1001-15B1?
Full erasure requires short-wave ultraviolet light at 2537 Å wavelength with a minimum integrated dose of 15 W·sec/cm². Using a 12,000 µW/cm² lamp, erasure takes 15–20 minutes at 2.5 cm distance. Room fluorescent lighting may cause partial erasure over years; direct sunlight can erase in ~1 week.
Can the M27C1001-15B1 be programmed using standard 5 V logic levels?
No. Programming requires VPP = 12.75 V ±0.25 V and VCC = 6.25 V ±0.25 V - both outside standard 5 V TTL/CMOS ranges. A dedicated high-voltage programming supply and voltage-switching circuitry are mandatory; applying 5 V to VPP will not initiate programming.
Is the PDIP32 package (B suffix) UV-erasable?
No. The "B" suffix denotes PDIP32 - a plastic package with no quartz window. Only FDIP32W ("F") and LCCC32W ("L") packages have UV-transparent lids. PDIP32 devices are one-time programmable (OTP) and cannot be erased.
How does the electronic signature mode function on the M27C1001-15B1?
Electronic signature is activated by applying 11.5–12.5 V to A9 while VPP = VCC = 5 V and all other address lines held low. Toggling A0 reads Manufacturer Code (20h) when A0 = low, then Device Code (05h) when A0 = high - used by programmers for automatic algorithm selection.
M27C1001-15B1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 32-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EPROM
- Technology:
- EPROM - OTP
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 150 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-PDIP
M27C1001-15B1 FAQ
1.How can I place an order for M27C1001-15B1 through Aetrix?
Please submit a Request for Quotation (RFQ) for M27C1001-15B1 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 M27C1001-15B1 reliable?
The price and inventory of M27C1001-15B1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C1001-15B1 is usually 5 days.
3.What payment methods are accepted for M27C1001-15B1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C1001-15B1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M27C1001-15B1?
M27C1001-15B1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M27C1001-15B1 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 M27C1001-15B1?
For technical support, including M27C1001-15B1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C1001-15B1 requirements.
6.How does Aetrix verify that M27C1001-15B1 is sourced from the original manufacturer or authorized distributors?
All M27C1001-15B1 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 M27C1001-15B1 meets industry standards.
7.What is the process for return or replacement of M27C1001-15B1?
All M27C1001-15B1 units undergo pre-shipment inspection (PSI). If there is an issue with M27C1001-15B1, 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 M27C1001-15B1 part is unused and in its original packaging.
Return procedure for M27C1001-15B1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M27C1001-15B1 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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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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24AA02UIDT-I/OT
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