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STMicroelectronics M27C1001-70C6
- Part No.:
- M27C1001-70C6
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
M27C1001-70C6.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,944
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Product details
Overview
M27C1001-70C6 from STMicroelectronics is a 1 Mbit (131,072 × 8) UV-erasable EPROM with 70 ns access time, 5V ±10% supply voltage, and dual-line control (E/G) for low-power memory arrays in legacy microprocessor systems. It supports electronic signature verification (Manufacturer Code 20h, Device Code 05h) and operates across –40°C to +85°C.
For engineers reviewing the M27C1001-70C6 datasheet, M27C1001-70C6 pinout, M27C1001-70C6 application, or M27C1001-70C6 equivalent, key selection criteria include UV erasability, 12.75V programming voltage, 100 µs/word programming time, standby current of 100 µA, and compatibility with TTL-level address/data inputs.
Technical Context
The M27C1001-70C6 implements a two-control-line architecture: Chip Enable (E) governs power state and device selection, while Output Enable (G) independently gates output drivers-enabling zero-bus-contention memory expansion. Its internal array is organized as 131,072 words × 8 bits, with all bits pre-erased to '1' and programmable to '0' only via 12.75V VPP pulses.
Electronic signature mode activates at 11.5–12.5V on A9 with VCC = VPP = 5V, allowing automated programmer identification by reading Q7–Q0 as Manufacturer Code (20h) and Device Code (05h). Erasure requires 15 W·s/cm² UV exposure (2537 Å wavelength) for 15–20 minutes at ≤2.5 cm distance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Mbit (131,072 × 8), enabling full program storage for 8-bit microcontrollers like Z80 or 8085. |
| Access Time | 70 ns max (tAVQV), supporting CPU bus cycles up to ~10 MHz in read mode. |
| Supply Voltage | 5V ±10% (VCC), compatible with standard TTL/CMOS logic rails without regulation. |
| Programming Voltage | 12.75V ±0.25V (VPP), requiring dedicated high-voltage circuitry during programming. |
| Standby Current | 100 µA (ICC2), reducing system power draw when deselected via E = VIH. |
| Operating Temp | –40°C to +85°C (Grade 6), qualifying for industrial temperature environments. |
| Package | PDIP32 (B suffix), 32-pin plastic DIP with 600-mil width for through-hole PCB mounting. |
Pinout & Package
PDIP32 (B package): 32-pin dual in-line package with 0.6-inch body width, 2.54 mm lead pitch, and standard through-hole footprint. Pin 1 index marker located at top-left corner when notch faces upward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus accepting 0–131,071; A9 used for Electronic Signature voltage sensing. |
| Q0–Q7 | Data Outputs | 8-bit bidirectional data bus; outputs driven during Read/Verify, inputs during Programming. |
| E | Chip Enable | Active-low primary device select; drives device into standby (100 µA) when high. |
| G | Output Enable | Active-low output gate; enables Q0–Q7 only when E is also low-prevents bus contention. |
| P | Program Control | Active-low pulse input (100 µs width) that initiates byte programming when E = VIL and VPP = 12.75V. |
| VPP | Programming Supply | 12.75V ±0.25V input required only during programming/verify; must be applied after VCC. |
| VCC | Supply Voltage | 5V ±10% main power rail; supplies core logic and I/O buffers in read/standby modes. |
| VSS | Ground | Reference return path for all internal circuits and I/O pins. |
| NC | No Connect | Pin 17 (DIP) is internally unconnected; must remain floating or tied to VSS per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| UV Erasability | Full array erase via 2537 Å UV light (15–20 min); enables firmware revision reuse in development and field repair. |
| Dual-Line Control | Independent E (power) and G (output) enables hierarchical memory banking with zero bus contention. |
| Electronic Signature | Factory-programmed 20h/05h ID codes readable at A9 = 12V; ensures automatic algorithm matching in universal programmers. |
| Low Standby Power | 100 µA ICC2 at CMOS E = VIH; critical for battery-backed or energy-constrained embedded systems. |
| TTL-Compatible I/O | All address/data pins meet TTL voltage thresholds (VIL ≤ 0.8V, VIH ≥ 2V); eliminates level-shifting in legacy designs. |
Applications
| Industrial PLC Firmware Storage | Avionics Boot ROM |
|---|---|
Use Scenario: Storing fixed ladder logic and I/O mapping in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile boot-time instruction storage; accessed sequentially during cold start with 70 ns latency tolerance. Use Value: UV erasability allows field updates without component replacement; PDIP32 enables manual rework and socket-based validation. | Use Scenario: Holding certified flight-critical boot code in airborne data concentrator units operating under DO-254 compliance. IC Role / Device Role / Timing Role: Read-only execution memory mapped to CPU address space; verified via electronic signature pre-flight. Use Value: –40°C to +85°C rating meets RTCA DO-160 environmental requirements; 100 µA standby minimizes thermal load in sealed enclosures. |
| Medical Diagnostic Equipment BIOS | Legacy Test Equipment Firmware |
Use Scenario: Storing calibration constants and self-test routines in ultrasound imaging front-end controllers. IC Role / Device Role / Timing Role: Static configuration store accessed once per power-on reset; no write operations during normal operation. Use Value: PDIP32 package supports long-term reliability testing and traceable lot tracking; 5V ±10% tolerance accommodates aging power supplies. | Use Scenario: Hosting firmware for discontinued semiconductor parametric testers requiring exact binary compatibility. IC Role / Device Role / Timing Role: Drop-in replacement for obsolete 27C1001 variants; identical pinout and AC timing (70 ns) ensures zero hardware modification. Use Value: Electronic signature (20h/05h) validates authenticity against original STMicroelectronics silicon; prevents counterfeit substitution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C1001-70DC | Same 1 Mbit × 8 organization, 70 ns access, but uses AMD's proprietary programming algorithm and signature codes (01h/05h). | Requires AMD-specific programmer firmware; not electronically signature-compatible with ST tools. | Select only if existing toolchain supports AMD signature and margin verify protocols. |
| MX27C1001-70PC | Macronix variant with identical pinout and DC specs, but 85°C max operating temperature (vs. 85°C for M27C1001-70C6) and different VPP tolerance (12.5V ±0.5V). | Marginally lower UV erase endurance; may require longer exposure times for full bit recovery. | Acceptable for non-critical commercial use where ST's extended industrial qualification is not mandated. |
Compared with AM27C1001-70DC and MX27C1001-70PC, the M27C1001-70C6 offers guaranteed STMicroelectronics signature compatibility, tighter VPP regulation (±0.25V), and full documentation traceability to ST's 2002 datasheet-critical for audit-driven industries.
Availability
M27C1001-70C6 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, avionics boot ROM, and medical diagnostic equipment BIOS requiring stable component supply across extended product lifecycles.
Supply support for M27C1001-70C6 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 over 40 years of nonvolatile memory heritage.
The M27C1001 belongs to ST's legacy EPROM product line, designed specifically for backward-compatible firmware storage in microprocessor-based systems where UV reprogrammability and pin-for-pin interchangeability were essential design requirements.
FAQ
What UV wavelength and exposure time are required to fully erase the M27C1001-70C6?
Full erasure requires short-wave ultraviolet light at 2537 Å wavelength with a minimum integrated dose of 15 W·s/cm². Using a standard 12,000 µW/cm² UV lamp placed ≤2.5 cm from the window, erasure takes 15–20 minutes. Room fluorescent lighting may cause partial erasure over years; direct sunlight can erase it in ~1 week.
Can the M27C1001-70C6 be programmed using standard 5V-only programmers?
No. Programming requires 12.75V ±0.25V on VPP and 6.25V ±0.25V on VCC-both supplied simultaneously. Standard 5V-only programmers lack the regulated high-voltage rail and will fail to program or verify correctly. Dedicated EPROM programmers with VPP capability (e.g., BP Microsystems Series) are mandatory.
Is the PDIP32 package of M27C1001-70C6 RoHS-compliant?
No. The M27C1001-70C6 PDIP32 (B suffix) was manufactured prior to RoHS enforcement and contains leaded solder in its leads and internal die attach. It is exempt under RoHS Annex III for legacy replacement applications but cannot be used in new RoHS-restricted designs without formal exemption approval.
How does the Electronic Signature mode function during programming setup?
Electronic Signature mode activates when A9 is forced to 11.5–12.5V while VCC = VPP = 5V and all other addresses are held low. Toggling A0 reads Manufacturer Code (20h) at A0 = low, then Device Code (05h) at A0 = high-allowing programmers to auto-select ST's PRESTO II algorithm before initiating programming.
M27C1001-70C6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- 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:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (11.35x13.89)
M27C1001-70C6 FAQ
1.How can I place an order for M27C1001-70C6 through Aetrix?
Please submit a Request for Quotation (RFQ) for M27C1001-70C6 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 M27C1001-70C6 reliable?
The price and inventory of M27C1001-70C6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C1001-70C6 is usually 5 days.
3.What payment methods are accepted for M27C1001-70C6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C1001-70C6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M27C1001-70C6?
M27C1001-70C6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M27C1001-70C6 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 M27C1001-70C6?
For technical support, including M27C1001-70C6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C1001-70C6 requirements.
6.How does Aetrix verify that M27C1001-70C6 is sourced from the original manufacturer or authorized distributors?
All M27C1001-70C6 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 M27C1001-70C6 meets industry standards.
7.What is the process for return or replacement of M27C1001-70C6?
All M27C1001-70C6 units undergo pre-shipment inspection (PSI). If there is an issue with M27C1001-70C6, 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 M27C1001-70C6 part is unused and in its original packaging.
Return procedure for M27C1001-70C6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M27C1001-70C6 Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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