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STMicroelectronics M27C2001-70C6TR
- Part No.:
- M27C2001-70C6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
M27C2001-70C6TR.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,383
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Product details
Overview
M27C2001-70C6TR from STMicroelectronics is a 2 Mbit (256K × 8) UV-erasable EPROM in a 32-pin PDIP package, featuring 55 ns access time, 5 V ±10% read supply, 12.75 V ±0.25 V programming voltage, and dual-line output control (E/G) for low-power memory arrays in legacy microprocessor systems.
For engineers reviewing the M27C2001-70C6TR datasheet, M27C2001-70C6TR pinout, M27C2001-70C6TR application, or M27C2001-70C6TR equivalent, key selection criteria include UV erasability, TTL-compatible timing, standby current of 100 µA, and compatibility with PRESTO II programming algorithms for reliable field reprogramming.
Technical Context
The M27C2001-70C6TR operates in five distinct modes-Read, Standby, Program, Verify, and Electronic Signature-controlled by E (Chip Enable), G (Output Enable), and P (Program) signals. Its two-line output control architecture enables hierarchical memory array management: E selects device power state while G gates output drivers independently.
Programming uses a 100 µs/word pulse at VPP = 12.75 V and VCC = 6.25 V, with automatic margin verification via PRESTO II algorithm. Erasure requires UV exposure (2537 Å, ≥15 W·s/cm²) through the windowed ceramic variant; the -70C6TR suffix denotes the plastic DIP (PDIP32) OTP version with no window, confirming it is one-time programmable only.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Mbit (262,144 × 8 bits); supports full 16-bit address bus decoding without external latching. |
| Access Time | 55 ns (tAVQV); ensures compatibility with 12–18 MHz Z80, 8086, and 68000-based systems. |
| Read Supply | 5 V ±10%; eliminates need for dedicated 5 V regulator in mixed-voltage legacy boards. |
| Standby Current | 100 µA at CMOS-level E high; reduces idle power in battery-backed or portable embedded controllers. |
| Programming Voltage | 12.75 V ±0.25 V on VPP; requires external HV generator but avoids internal charge pump complexity. |
| Output Drive | TTL-compatible VOH = 2.4 V / VOL = 0.4 V at IOL = 2.1 mA; directly interfaces with 74LS/ALS logic without level shifters. |
| Operating Temp | 0 °C to 70 °C; validated for commercial-grade industrial control panels and test equipment. |
Pinout & Package
Package: PDIP32 (Plastic Dual In-line Package, 600 mil width), RoHS-compliant ECOPACK® lead-free construction per JEDEC JESD97.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus interface; A0–A17 fully decode 256K locations with no address multiplexing. |
| Q0–Q7 | Data Outputs | Bi-directional data bus pins used for parallel programming input and read output; TTL-level compatible. |
| E | Chip Enable | Active-low primary device select; places device in standby (100 µA) when high, enabling memory banking. |
| G | Output Enable | Active-low output gate; allows shared data bus usage across multiple EPROMs without contention. |
| P | Program Control | Active-low pulse-triggered programming enable; synchronized with VPP and address/data setup for byte-wise write. |
| VPP | Programming Supply | 12.75 V input during programming; isolated from VCC to prevent system rail disturbance during write cycles. |
| VCC | Supply Voltage | 5 V read supply; must be applied before/removed after VPP to prevent latch-up or cell damage. |
| VSS | Ground | Signal reference common to all inputs/outputs; requires local 0.1 µF ceramic decoupling per device. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-line output control (E + G) | Enables zero-bus-contention memory expansion with independent power gating and output enable. |
| PRESTO II programming algorithm | Guarantees verified programming margin per byte without over-programming pulses; reduces field failure risk. |
| Electronic signature (20h/61h) | Allows automated programmer identification and algorithm matching-critical for production line repeatability. |
| ECOPACK® RoHS compliance | Lead-free PDIP32 package meets JEDEC JESD97 marking requirements for second-level interconnect. |
| 100 µA CMOS standby current | Supports low-quiescent-power operation in always-on controller modules without auxiliary sleep circuitry. |
Applications
| Industrial PLC Firmware Storage | Legacy Test Equipment Boot ROM |
|---|---|
Use Scenario: Stores firmware for programmable logic controllers operating in factory-floor environments with ambient temperatures up to 70 °C. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped at reset vector; provides deterministic 55 ns instruction fetch latency. Use Value: UV-erasable variants allow field firmware updates via EPROM programmer; OTP version (-70C6TR) ensures tamper-resistant final deployment. | Use Scenario: Holds self-test routines and calibration constants in automated test systems requiring long-term data retention without refresh. IC Role / Device Role / Timing Role: Static memory holding critical startup code; accessed only at power-on, minimizing active power draw. Use Value: 100 µA standby current extends uptime in mains-powered bench instruments; TTL output drive simplifies interface to legacy GPIB or ISA bus logic. |
| Embedded Controller BIOS | Avionics Maintenance Terminal ROM |
Use Scenario: Stores initialization code and hardware abstraction layer for 80C188-based embedded controllers in medical devices. IC Role / Device Role / Timing Role: Memory-mapped BIOS executed directly from address 0x00000; supports wait-state-free execution at 12 MHz. Use Value: 5 V ±10% supply tolerance accommodates aging power supplies; PDIP32 footprint enables manual replacement during field service. | Use Scenario: Stores diagnostic software and aircraft-specific configuration tables in portable maintenance terminals certified to DO-160 environmental standards. IC Role / Device Role / Timing Role: Read-only program store accessed via discrete address decoder; no write cycles during operation. Use Value: ECOPACK® lead-free packaging satisfies aerospace RoHS requirements; 0–70 °C rating aligns with ground-support equipment thermal profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C2001-70DC | Same 2 Mbit × 8 organization and 55 ns speed, but uses AMD's proprietary programming algorithm and 12.5 V VPP. | Requires AMD-specific programmer firmware; lacks ST's electronic signature (20h/61h) for auto-detection. | Select only if existing toolchain supports AMD devices and VPP tolerance (±0.25 V vs. ±0.5 V) is verified. |
| MX27C2001-70PC | Pin-compatible but specifies 60 ns access time and 12.0 V ±0.5 V programming voltage; higher standby current (200 µA). | Marginally slower timing may require wait-state insertion on fast 16-bit buses; not suitable for cycle-critical Z80 systems. | Acceptable for cost-sensitive replacements where 5 ns timing slack exists and 12 V programming infrastructure is already deployed. |
Compared with AM27C2001-70DC and MX27C2001-70PC, the M27C2001-70C6TR offers tighter VPP regulation (±0.25 V), lower standby current (100 µA), and standardized electronic signature-making it preferable for automated programming lines and thermally constrained industrial enclosures.
Availability
M27C2001-70C6TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy test equipment boot ROM, and embedded controller BIOS requiring stable component supply across extended product lifecycles.
Supply support for M27C2001-70C6TR 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 strong heritage in nonvolatile memory design.
The M27C2001 belongs to ST's legacy EPROM product line, engineered specifically for reliability-critical, long-lifecycle applications in industrial automation and test instrumentation where field programmability and proven radiation-tolerant cell structure are essential.
FAQ
Is M27C2001-70C6TR UV-erasable?
No. The "C6TR" suffix indicates a PDIP32 package with no quartz window; it is a one-time programmable (OTP) EPROM. Only FDIP32W (ceramic frit-seal with window) variants support UV erasure. This part must be programmed once and cannot be erased or reprogrammed.
What programming voltage and sequence are required?
VPP must be precisely 12.75 V ±0.25 V, applied after VCC (6.25 V ±0.25 V) and held stable during the 100 µs programming pulse on the P pin. Address and data must be valid before the pulse edge. PRESTO II algorithm requires verify-reads at two VCC levels (6.0 V and 4.2 V) to confirm margin.
Can M27C2001-70C6TR operate at 3.3 V?
No. It requires 5 V ±10% for read operations and 6.25 V ±0.25 V for programming. The input thresholds (VIH = 2 V, VIL = 0.8 V) and output drive (VOH = 2.4 V) are TTL-optimized. Direct 3.3 V interfacing risks read failures and violates absolute maximum ratings.
Does it support common memory bus protocols like ISA or VME?
It does not implement any serial or packetized protocol. As a parallel asynchronous EPROM, it interfaces directly to ISA, STD Bus, or custom 8-bit/16-bit address/data buses using discrete E and G control lines-no glue logic needed beyond standard address decoding.
M27C2001-70C6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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)
M27C2001-70C6TR FAQ
1.How can I place an order for M27C2001-70C6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for M27C2001-70C6TR 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 M27C2001-70C6TR reliable?
The price and inventory of M27C2001-70C6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C2001-70C6TR is usually 5 days.
3.What payment methods are accepted for M27C2001-70C6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C2001-70C6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M27C2001-70C6TR?
M27C2001-70C6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M27C2001-70C6TR 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 M27C2001-70C6TR?
For technical support, including M27C2001-70C6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C2001-70C6TR requirements.
6.How does Aetrix verify that M27C2001-70C6TR is sourced from the original manufacturer or authorized distributors?
All M27C2001-70C6TR 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 M27C2001-70C6TR meets industry standards.
7.What is the process for return or replacement of M27C2001-70C6TR?
All M27C2001-70C6TR units undergo pre-shipment inspection (PSI). If there is an issue with M27C2001-70C6TR, 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 M27C2001-70C6TR part is unused and in its original packaging.
Return procedure for M27C2001-70C6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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