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STMicroelectronics M27C2001-70C6
- Part No.:
- M27C2001-70C6
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
M27C2001-70C6.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,346
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Product details
Overview
M27C2001-70C6 from STMicroelectronics is a 2 Mbit (256K × 8) UV-erasable EPROM in PDIP32 package, operating at 5V ±10%, with 70 ns access time, 30 mA active current, and 100 µA standby current. It features dual-line output control (E/G), electronic signature (20h/61h), and supports microprocessor-based firmware storage in legacy industrial controllers.
For engineers reviewing the M27C2001-70C6 datasheet, M27C2001-70C6 pinout, M27C2001-70C6 application, or M27C2001-70C6 equivalent, key selection criteria include UV erasability, TTL-compatible timing, 70 ns read access, 12.75 V programming voltage, and compatibility with PRESTO II programming algorithms for reliable field reprogramming.
Technical Context
The M27C2001-70C6 implements a standard NMOS EPROM architecture with address decoding across A0–A17 (262,144 locations), data I/O via Q0–Q7, and two independent enable controls: Chip Enable (E) for power gating and Output Enable (G) for bus contention management. Its logic diagram confirms full TTL-level input compatibility except for A9 during Electronic Signature mode.
It operates in five distinct modes-Read, Standby, Program, Verify, and Electronic Signature-each defined by specific voltage and timing conditions on E, G, P, and VPP. Programming requires VCC = 6.25 V ±0.25 V and VPP = 12.75 V ±0.25 V, with 100 µs pulse width per word and automatic margin verification under PRESTO II algorithm.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Mbit (256K × 8); supports full 16-bit address space with byte-wide parallel data interface. |
| Access Time | 70 ns max (tAVQV/tELQV); ensures compatibility with 14 MHz Z80 or 8 MHz 8086 bus cycles. |
| Supply Voltage | 5 V ±10% in Read mode; enables direct integration into legacy 5 V logic systems without level shifting. |
| Programming Voltage | VPP = 12.75 V ±0.25 V; requires dedicated high-voltage supply rail or programmer circuitry. |
| Standby Current | 100 µA (CMOS E high); reduces system idle power in battery-backed or low-power embedded controllers. |
| Electronic Signature | Manufacturer Code 20h, Device Code 61h; enables automated device identification in universal programmers. |
| Operating Temp | 0 °C to 70 °C (Commercial grade); validated for use in non-automotive industrial enclosures. |
Pinout & Package
Packaged in 32-pin Plastic Dual In-line Package (PDIP32, package code "B"), with 0.6-inch width, through-hole mounting, and RoHS-compliant ECOPACK® lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; TTL-compatible, no pull-ups required. |
| Q0–Q7 | Data Outputs | Bi-directional data bus in programming mode; high-impedance when E or G inactive. |
| E | Chip Enable | Primary power control: VIH places device in standby (100 µA); VIL enables read/program operations. |
| G | Output Enable | Secondary output gate: VIH forces Q0–Q7 to Hi-Z regardless of E state; prevents bus contention. |
| P | Program Control | Active-low pulse input; initiates programming only when E = VIL 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 | Power Supply | 5 V ±10% in Read mode; 6.25 V ±0.25 V in Programming mode - requires voltage switching in system design. |
| VSS | Ground | Reference return for all signals; decoupling requires 0.1 µF ceramic capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-line output control (E + G) | Enables zero-bus-contention memory arrays: E selects device, G gates outputs - critical for multi-chip 8086/8088 systems. |
| PRESTO II programming algorithm | Guarantees cell margin with auto-verify at two VCC levels (6 V and 4.2 V); eliminates over-programming risk in production. |
| Electronic signature (20h/61h) | Allows unambiguous device identification in automated programming stations - avoids firmware corruption from incorrect algorithm selection. |
| UV-erasable (FDIP32W variant) | Windowed ceramic package enables field firmware updates via 15–20 min UV exposure (2537 Å, ≥15 W·s/cm²); not applicable to PDIP32 M27C2001-70C6. |
| ECOPACK® compliance | Lead-free PDIP32 package meets JEDEC JESD97 second-level interconnect marking; suitable for RoHS-constrained industrial PCBs. |
Applications
| Industrial PLC Firmware Storage | Legacy Test Equipment Boot ROM |
|---|---|
|
Use Scenario: Stores boot firmware and ladder logic interpreter in DIN-rail mounted programmable logic controllers operating in factory-floor environments (0–70°C). IC Role / Device Role / Timing Role: Nonvolatile program memory mapped to CPU address space; accessed via 8-bit data bus with 70 ns tACC to meet 14 MHz Z80 timing budgets. Use Value: UV-erasability (in FDIP variant) allows field firmware patching without board replacement; PDIP32 version provides cost-optimized OTP deployment. |
Use Scenario: Holds self-test routines and calibration constants in discontinued semiconductor ATE platforms requiring long-term component availability. IC Role / Device Role / Timing Role: Static memory mapped as ROM at reset vector; E/G control isolates bus during test sequence execution to prevent interference with analog subsystems. Use Value: 100 µA standby current extends uptime in mains-powered but intermittently active test racks; electronic signature ensures correct firmware loading during maintenance. |
| Medical Device Diagnostic BIOS | Avionics Maintenance Terminal Memory |
|
Use Scenario: Stores diagnostic initialization code and safety-critical configuration tables in Class II medical analyzers certified to IEC 62304. IC Role / Device Role / Timing Role: Read-only memory accessed during power-on self-test (POST); timing-critical tGLQV ≤35 ns ensures deterministic boot latency. Use Value: ECOPACK® lead-free PDIP32 satisfies medical RoHS requirements; PRESTO II programming guarantees bit integrity over 10+ year service life. |
Use Scenario: Retains aircraft-specific configuration data and fault-tree lookup tables in portable Line Replaceable Units (LRUs) used for Boeing 737NG maintenance. IC Role / Device Role / Timing Role: Memory-mapped peripheral in 80C88-based terminal; operates under MIL-STD-704A power transients due to robust 5 V ±10% VCC tolerance. Use Value: Dual enable (E/G) prevents spurious reads during brown-out recovery; verified operation up to 85°C supports avionics bay thermal profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EPROM-based firmware storage applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C2001-70DC | Same 2 Mbit ×8 organization, 70 ns access, but uses AMD's proprietary programming algorithm and signature codes (01h/61h). | Requires AMD-specific programmer firmware; not compatible with ST PRESTO II flow or signature readers. | Select only if existing toolchain supports AMD devices and long-term AM27C2001 supply is secured. |
| MX27C2001-70PC | Macronix variant with identical pinout and DC specs, but AC parameters tested at VCC = 5 V ±5% (not ±10%), and no ECOPACK® certification. | Lacks RoHS-compliant marking; may require requalification for medical/industrial certifications requiring JEDEC JESD97 traceability. | Acceptable for cost-sensitive, non-certified prototypes; avoid where regulatory documentation or lead-free compliance is mandatory. |
Compared with AM27C2001-70DC and MX27C2001-70PC, the M27C2001-70C6 offers guaranteed PRESTO II algorithm support, ST-specific electronic signature for tool interoperability, and full ECOPACK® documentation - making it the preferred choice for regulated, long-lifecycle industrial deployments.
Availability
M27C2001-70C6 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy test equipment boot ROM, medical device diagnostic BIOS, and avionics maintenance terminal memory requiring stable component supply across extended product lifecycles.
Supply support for M27C2001-70C6 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, specializing in automotive, industrial, and power discrete technologies with broad analog and memory portfolios.
The M27C2001 belongs to ST's legacy EPROM product line, designed specifically for firmware retention in microprocessor-based systems where field-upgradable nonvolatile memory was required prior to flash dominance.
FAQ
Is M27C2001-70C6 UV-erasable?
No. The M27C2001-70C6 uses a PDIP32 (plastic) package without a quartz window, making it one-time programmable (OTP). Only the FDIP32W variant (ceramic with UV window) supports ultraviolet erasure. This distinction is encoded in the part number suffix and mechanical package code.
What voltage is required on A9 during Electronic Signature readout?
A9 must be driven to 11.5–12.5 V (VID) while VCC and VPP are held at 5 V to activate Electronic Signature mode. This high-voltage condition is exclusive to signature readout and is not used during normal read or programming operations.
Can M27C2001-70C6 operate at 3.3 V?
No. The device requires 5 V ±10% for read operation and 6.25 V ±0.25 V for programming. It lacks 3.3 V logic compatibility, and applying 3.3 V to VCC will result in undefined behavior, failed reads, or inability to enter programming mode.
Does M27C2001-70C6 support page or burst programming?
No. It uses word-by-word programming with 100 µs pulses per byte. PRESTO II verifies each programmed word individually at two VCC levels; there is no page, sector, or burst programming capability - consistent with standard EPROM architecture.
M27C2001-70C6 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:
- 2Mbit
- Memory Organization:
- 256K 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 (13.96x11.46)
M27C2001-70C6 FAQ
1.How can I place an order for M27C2001-70C6 through Aetrix?
Please submit a Request for Quotation (RFQ) for M27C2001-70C6 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 M27C2001-70C6 reliable?
The price and inventory of M27C2001-70C6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C2001-70C6 is usually 5 days.
3.What payment methods are accepted for M27C2001-70C6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C2001-70C6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M27C2001-70C6?
M27C2001-70C6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M27C2001-70C6 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 M27C2001-70C6?
For technical support, including M27C2001-70C6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C2001-70C6 requirements.
6.How does Aetrix verify that M27C2001-70C6 is sourced from the original manufacturer or authorized distributors?
All M27C2001-70C6 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 M27C2001-70C6 meets industry standards.
7.What is the process for return or replacement of M27C2001-70C6?
All M27C2001-70C6 units undergo pre-shipment inspection (PSI). If there is an issue with M27C2001-70C6, 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 M27C2001-70C6 part is unused and in its original packaging.
Return procedure for M27C2001-70C6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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