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STMicroelectronics M27C2001-10B1
- Part No.:
- M27C2001-10B1
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
M27C2001-10B1.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,914
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Product details
Overview
M27C2001-10B1 from STMicroelectronics is a 2 Mbit (256K × 8) UV-erasable EPROM in PDIP32 package, featuring 55 ns access time, 5 V ±10% read supply, and dual-line output control (E/G) for low-power memory arrays. It supports electronic signature (0x20/0x61), operates across –40°C to +85°C, and is used in legacy microprocessor boot ROMs requiring nonvolatile program storage with field-erasable capability.
For engineers reviewing the M27C2001-10B1 datasheet, M27C2001-10B1 pinout, M27C2001-10B1 application, or M27C2001-10B1 equivalent, key selection criteria include UV erasure compatibility, 12.75 V programming voltage, PRESTO II algorithm support, TTL-level address/data interface, and FDIP/PDIP/PLCC/TSOP32 package interchangeability within system-level socket constraints.
Technical Context
The M27C2001-10B1 implements a standard NMOS EPROM architecture with address decoding logic driving a 262,144 × 8-bit array. Its two-line output enable (E for chip select, G for output gating) enables hierarchical memory expansion without bus contention, while standby mode reduces ICC from 30 mA to 100 µA via CMOS-high E assertion.
Programming uses a 100 µs pulse per word at VPP = 12.75 V ±0.25 V and VCC = 6.25 V ±0.25 V, with automatic margin verification via PRESTO II algorithm; erasure requires UV exposure (2537 Å, ≥15 W·s/cm²) through the windowed ceramic package - though the -10B1 variant is PDIP32 (non-windowed, OTP-capable only if factory-configured, but datasheet confirms UV EPROM identity and FDIP32W as primary UV variant).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Mbit (256K × 8), enabling full 16-bit microprocessor instruction storage without banking |
| Access Time | 55 ns max (tAVQV), compatible with 12–18 MHz Z80/8086 bus timing budgets |
| Read Supply | 5 V ±10%, eliminating need for dedicated 5.0 V regulator in legacy systems |
| Standby Current | 100 µA at VIH on E, critical for low-power hold states in battery-backed systems |
| Programming Voltage | VPP = 12.75 V ±0.25 V, requiring external HV generator not shared with 5 V logic rails |
| Electronic Signature | Manufacturer Code 0x20 (STMicroelectronics), Device Code 0x61, enabling auto-algorithm detection in programmers |
| Operating Temp | –40°C to +85°C, qualified for industrial control and telecom line-card environments |
Pinout & Package
Packaged in 32-pin Plastic Dual In-line Package (PDIP32, body width 600 mils), compliant with ECOPACK® lead-free requirements and JEDEC MS-011AC. Pin 1 index marker located at top-left corner when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word decode; A9 used for Electronic Signature voltage injection (11.5–12.5 V) |
| Q0–Q7 | Data Outputs | Bi-directional data bus pins used for both read output and programming input (latched on P pulse) |
| E | Chip Enable | Primary device selection signal; VIH places device in standby (Hi-Z outputs, 100 µA ICC) |
| G | Output Enable | Secondary output gate; active-low, independent of E, enabling shared G-bus in multi-chip arrays |
| P | Program Pulse | Active-low programming strobe; initiates 100 µs write cycle when E = VIL and VPP = 12.75 V |
| VPP | Programming Supply | Dedicated 12.75 V pin; 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 - requires separate regulation during program cycles |
| VSS | Ground | Signal reference for all inputs/outputs; 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 expansion: E selects device, G gates output - critical for multi-ROM systems |
| PRESTO II programming algorithm | Guarantees cell margin via verify-in-margin-mode; eliminates overprogramming and extends data retention beyond 10 years |
| Electronic signature (0x20/0x61) | Allows automated programmer identification and algorithm matching without manual part selection |
| UV erasability (FDIP32W variant) | Supports >100 erase/write cycles via 2537 Å UV exposure (15–20 min); PDIP32 variant retains same die and programming behavior |
| ECOPACK® compliance | Lead-free construction with JEDEC JESD97 second-level interconnect marking - meets RoHS and ELV directives |
Applications
| Industrial PLC Firmware Storage | Legacy Telecom Line Card Boot ROM |
|---|---|
Use Scenario: Storing firmware for programmable logic controllers operating in unattended factory environments with ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: Nonvolatile boot ROM providing deterministic startup code fetch at power-on; 55 ns access ensures alignment with 12 MHz CPU clock setup times. Use Value: UV-erasable architecture allows field firmware updates using standard EPROM programmers; PDIP32 socket compatibility simplifies board-level replacement. | Use Scenario: Holding initialization code and diagnostic routines for T1/E1 line interface cards deployed in central office switching systems. IC Role / Device Role / Timing Role: Primary instruction store mapped to CPU reset vector; dual E/G control prevents bus conflicts during hot-swap diagnostics. Use Value: 100 µA standby current minimizes power draw during card idle states; ECOPACK® compliance satisfies telco environmental certification requirements. |
| Automotive Engine Control Unit Calibration | Medical Imaging System Configuration PROM |
Use Scenario: Storing engine calibration maps in early OBD-I ECUs where reprogramming required workshop-level UV erasure and re-burn. IC Role / Device Role / Timing Role: Read-only configuration memory accessed during ECU boot sequence; operates across –40°C to +85°C automotive temperature range. Use Value: Manufacturer/device signature (0x20/0x61) enables secure programming station validation; 5 V ±10% tolerance accommodates vehicle battery voltage fluctuations. | Use Scenario: Holding FPGA configuration bitstreams and sensor calibration coefficients in portable X-ray and ultrasound devices. IC Role / Device Role / Timing Role: Static configuration PROM loaded at power-up; high noise immunity (VIH = 2 V, VIL = 0.8 V) ensures reliability in mixed-signal medical PCBs. Use Value: PRESTO II programming guarantees >10-year data retention under continuous operation; PDIP32 footprint allows hand-soldering for low-volume production. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C2001-120DC | 120 ns access time; 5 V ±5% read supply; identical pinout and programming voltage | Lower speed grade suitable for sub-8 MHz systems; higher ICC active current (40 mA) | Select when cost sensitivity outweighs timing budget - no PCB change required |
| MX27C2001PC-10 | 100 ns access time; 5 V ±10% supply; same 32-pin DIP; manufacturer-specific signature codes | Requires modified programming algorithm due to different PRESTO implementation; no A9-based electronic signature | Use only with compatible programmers; verify signature readback and margin verify behavior before deployment |
Compared with AM27C2001-120DC and MX27C2001PC-10, the M27C2001-10B1 delivers tighter 55 ns timing for high-speed microprocessor interfaces, guaranteed PRESTO II margin verification, and standardized STMicroelectronics electronic signature - making it optimal for designs prioritizing boot-time determinism and programmer interoperability.
Availability
M27C2001-10B1 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy telecom line card boot ROMs, and automotive ECU calibration requiring stable component supply across extended lifecycle programs.
Supply support for M27C2001-10B1 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 analog, MCU, power, and memory products for industrial, automotive, and consumer markets.
The M27C2001 belongs to ST's legacy EPROM product line, engineered specifically for reliable, field-erasable nonvolatile storage in microprocessor-based systems where software updates occur infrequently but require absolute data integrity and long-term retention.
FAQ
Is M27C2001-10B1 UV-erasable or one-time programmable?
The M27C2001-10B1 is a UV-erasable EPROM by design and datasheet specification. Although packaged in PDIP32 (non-windowed), it shares the same silicon die as the FDIP32W variant and retains full UV erasure capability when decapsulated or mounted in UV-transparent sockets. Factory OTP configuration is not indicated in ST documentation - all M27C2001 variants support UV erasure per Section 2.10.
What is the correct power sequencing for programming M27C2001-10B1?
VCC must be applied simultaneously with or before VPP, and removed simultaneously or after VPP. During programming, VCC = 6.25 V ±0.25 V and VPP = 12.75 V ±0.25 V. Violating this sequence risks oxide damage or incomplete programming. The PRESTO II flowchart (Figure 5) mandates these voltages for all 100 µs pulses and verify cycles.
Can M27C2001-10B1 operate at 3.3 V?
No. The M27C2001-10B1 is specified exclusively for 5 V ±10% operation in read mode and 6.25 V ±0.25 V in programming mode. Input thresholds (VIH = 2 V, VIL = 0.8 V) and output drive levels (VOH = 2.4 V) are TTL-compatible only at 5 V. Operation below 4.5 V violates DC characteristics and risks read failures or latch-up.
Does M27C2001-10B1 support common bus sharing with other memory devices?
Yes - via its two-line output control architecture. Chip Enable (E) serves as device-select signal, while Output Enable (G) acts as shared output gate. When E is high, outputs go Hi-Z regardless of G state; when E is low and G is low, data appears on Q0–Q7. This allows multiple M27C2001s to share a single data bus without contention.
M27C2001-10B1 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:
- 2Mbit
- Memory Organization:
- 256K 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:
- 32-PDIP
M27C2001-10B1 FAQ
1.How can I place an order for M27C2001-10B1 through Aetrix?
Please submit a Request for Quotation (RFQ) for M27C2001-10B1 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 M27C2001-10B1 reliable?
The price and inventory of M27C2001-10B1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C2001-10B1 is usually 5 days.
3.What payment methods are accepted for M27C2001-10B1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C2001-10B1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M27C2001-10B1?
M27C2001-10B1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M27C2001-10B1 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 M27C2001-10B1?
For technical support, including M27C2001-10B1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C2001-10B1 requirements.
6.How does Aetrix verify that M27C2001-10B1 is sourced from the original manufacturer or authorized distributors?
All M27C2001-10B1 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 M27C2001-10B1 meets industry standards.
7.What is the process for return or replacement of M27C2001-10B1?
All M27C2001-10B1 units undergo pre-shipment inspection (PSI). If there is an issue with M27C2001-10B1, 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 M27C2001-10B1 part is unused and in its original packaging.
Return procedure for M27C2001-10B1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M27C2001-10B1 Tags
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