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Home > Products > Integrated Circuits (ICs) > Memory > Memory

STMicroelectronics M27C1001-15C1

Name: M27C1001-15C1
Brand: STMicroelectronics
SKU: M27C1001-15C1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M27C1001-15C1

Manufacturer:: STMicroelectronics

Category:: Memory

Package:: 32-LCC (J-Lead)

Datasheet:: M27C1001-15C1.pdf

Description:: IC EPROM 1MBIT PARALLEL 32PLCC

Quantity:: RFQ Add To RFQ list

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Inventory:1,831

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Product details

Overview

M27C1001-15C1 from STMicroelectronics is a 1 Mbit (128K × 8) UV-erasable EPROM with 35 ns access time, 5V ±10% supply voltage, and dual-line control (E/G) for low-power memory arrays. It features electronic signature (20h/05h), 12.75V programming voltage, and is packaged in PDIP32 for industrial microprocessor program storage.

For engineers reviewing the M27C1001-15C1 datasheet, M27C1001-15C1 pinout, M27C1001-15C1 application, or M27C1001-15C1 equivalent, key selection criteria include UV-erase capability, TTL-compatible timing, standby current of 100 µA, and compatibility with legacy 8-bit bus systems requiring nonvolatile code storage.

Technical Context

The M27C1001-15C1 implements a two-line output control architecture using Chip Enable (E) and Output Enable (G) to minimize power and prevent bus contention. Its read mode requires simultaneous VCC and VPP application, with E active low for device selection and G active low for output gating.

Programming uses 100 µs pulses at VPP = 12.75V ±0.25V and VCC = 6.25V ±0.25V, with A9 driven to 11.5–12.5V for electronic signature verification. Erasure requires 15 W·s/cm² UV dose (2537 Å) for 15–20 minutes - applicable only to FDIP32W/LCCC32W variants, not the PDIP32 package of this variant.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	1 Mbit (131,072 × 8 bits) - supports full 16-bit address space with A0–A16 inputs
Access Time	35 ns - enables direct interface with 25 MHz CPU buses without wait states
Supply Voltage	5V ±10% - compatible with standard TTL/CMOS logic rails; no separate logic-level translation needed
Active Current	30 mA at 5 MHz - defines peak power draw during instruction fetch bursts
Standby Current	100 µA - allows low-quiescent operation in battery-backed or sleep-mode systems
Programming Voltage	12.75V ±0.25V - requires dedicated HV supply; not derived from VCC
Electronic Signature	Manufacturer Code 20h / Device Code 05h - enables automatic algorithm selection in universal programmers

Pinout & Package

Packaged in 32-pin PDIP (Plastic Dual In-line Package), the M27C1001-15C1 uses industry-standard through-hole mounting with 0.6-inch body width and 2.54 mm lead pitch. The PDIP32 variant is OTP-only (no UV window) and intended for one-time-programmed firmware storage.

Pin/Terminal	Circuit Role	Design Meaning
A0–A16	Address Inputs	17-bit address bus supporting full 128K-word decoding; TTL-compatible thresholds
Q0–Q7	Data Outputs	Bi-directional data bus pins used for parallel programming input and read output
E	Chip Enable	Primary device select; CMOS high (≥VCC–0.2V) places device in 100 µA standby
G	Output Enable	Secondary output gate; controls Q0–Q7 Hi-Z state independently of E
P	Program Control	Active-low pulse input enabling programming mode when VPP = 12.75V and E = low
VPP	Programming Supply	Dedicated 12.75V pin; must be applied simultaneously with or after VCC
VCC	Power Supply	5V ±10% main supply; powers logic and output drivers during read and program modes
VSS	Ground	Reference return for all signals; decoupling requires 0.1 µF ceramic capacitor per device

Key Features

Feature	Design Value
Two-line output control (E + G)	Enables zero-bus-contention memory expansion and reduces system power by placing unselected devices in 100 µA standby
Electronic signature (20h/05h)	Allows automated device identification and algorithm matching in production programmers without manual part selection
PRESTO II programming algorithm	Guarantees full-array programming in ~13 seconds with margin-verified 100 µs pulses - eliminates overprogramming risk
TTL-compatible timing and levels	Direct interface with 80Cxx, Z80, and 68K-family microprocessors without level-shifting circuitry
UV-erasable option (not in PDIP32)	FDIP32W/LCCC32W packages support field reprogramming via 2537 Å UV exposure; PDIP32 is OTP-only

Applications

Industrial PLC Firmware Storage

Legacy Automotive ECU Boot Code

Use Scenario: Storing fixed boot firmware in programmable logic controllers operating in extended temperature environments (–40°C to 85°C).

IC Role / Device Role / Timing Role: Nonvolatile program memory mapped to CPU address space; accessed via synchronous 8-bit data bus with 35 ns tACC.

Use Value: Eliminates need for external EEPROM or Flash configuration; leverages proven reliability of EPROM for safety-critical initialization sequences.

Use Scenario: Holding calibration tables and startup routines in pre-OBD-II engine control units where firmware updates are infrequent.

IC Role / Device Role / Timing Role: Read-only instruction store executing directly from address lines A0–A16; enabled by E/G control synchronized to microcontroller bus cycles.

Use Value: Provides deterministic 35 ns access latency critical for real-time fuel injection timing loops without cache or wait-state penalties.

Medical Instrument Boot ROM

Avionics Display Processor Code

Use Scenario: Storing certified diagnostic firmware in Class II medical devices requiring long-term data retention (>20 years) and radiation tolerance.

IC Role / Device Role / Timing Role: Static code memory isolated from volatile RAM; powered only during power-on self-test (POST) via controlled E activation.

Use Value: 100 µA standby current extends battery life in portable diagnostics; UV-erasable variants (not this PDIP part) allow post-certification patching under controlled conditions.

Use Scenario: Hosting display initialization firmware in cockpit multifunction displays operating across –55°C to +125°C thermal ranges.

IC Role / Device Role / Timing Role: Memory-mapped instruction source for dedicated display controller ASIC; timing governed by tELQV (35 ns) and tGLQV (25 ns) parameters.

Use Value: Guaranteed 35 ns access ensures pixel clock synchronization; PDIP32 packaging meets MIL-STD-883 mechanical robustness requirements for vibration-prone installations.

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
AM27C1001-35DC	Same 1 Mbit × 8 organization, 35 ns access, but uses AMD's proprietary programming algorithm and signature codes (01h/05h)	Requires AMD-specific programmer firmware; pinout identical but VPP timing tolerances differ slightly (12.5V ±0.5V vs. 12.75V ±0.25V)	Select only if existing programming infrastructure is AMD-optimized; no functional advantage for new designs
MX27C1001-35PC	Macronix variant with identical AC/DC specs, but higher max ICC (35 mA) and wider VPP tolerance (12.5V ±0.5V)	Compatible in read mode; programming may require adjusted pulse width due to slower internal verify loop	Acceptable drop-in replacement for read-only use; verify programming yield with PRESTO II-equivalent algorithm

Compared with AM27C1001-35DC and MX27C1001-35PC, the M27C1001-15C1 offers tighter VPP regulation (±0.25V), lower standby current (100 µA vs. 200 µA typical), and STMicroelectronics' PRESTO II margin-verified programming - making it preferable for high-reliability, low-power, and production-programming-critical applications.

Availability

M27C1001-15C1 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy automotive ECU boot code, and medical instrument boot ROM requiring stable component supply and long-lifecycle support.

Supply support for M27C1001-15C1 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 analog, MCU, power, and memory solutions for industrial, automotive, and consumer markets.

The M27C1001 belongs to ST's legacy EPROM product line, designed specifically for cost-sensitive, high-reliability embedded systems requiring nonvolatile program storage with guaranteed 20+ year data retention and UV-erasable flexibility (in windowed packages).

FAQ

Is M27C1001-15C1 UV-erasable?

No. The "-15C1" suffix indicates PDIP32 packaging (code "B" per ordering scheme), which is OTP-only. UV erasure requires FDIP32W ("F") or LCCC32W ("L") packages with quartz windows. This variant is programmed once and retains data indefinitely without UV exposure capability.

What is the purpose of the P pin?

The P (Program) pin is an active-low control input that initiates programming mode when pulsed low (≤0.8 V) while E = VIL and VPP = 12.75V. It enables byte-level programming without affecting unselected addresses and is essential for PRESTO II algorithm execution and electronic signature verification.

Can M27C1001-15C1 operate at 3.3V?

No. The device requires 5V ±10% (4.5–5.5V) for read operation and 6.25V ±0.25V for programming. It is not 3.3V-tolerant: VIH minimum is 2V, but VCC must be 5V nominal. Interfacing with 3.3V systems requires level translation on address/data/control lines and separate 5V supply rail.

How does electronic signature work on this device?

Electronic signature is read by applying 11.5–12.5V to A9 while VPP = VCC = 5V, holding all other address lines low, then toggling A0: Q7–Q0 outputs Manufacturer Code (20h) when A0 = low, and Device Code (05h) when A0 = high. This occurs only at 25°C ±5°C and is used by programmers for automatic algorithm selection.

M27C1001-15C1 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:: 150 ns

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 32-PLCC (11.35x13.89)

M27C1001-15C1 FAQ

1.How can I place an order for M27C1001-15C1 through Aetrix?

Please submit a Request for Quotation (RFQ) for M27C1001-15C1 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 M27C1001-15C1 reliable?

The price and inventory of M27C1001-15C1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C1001-15C1 is usually 5 days.

3.What payment methods are accepted for M27C1001-15C1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C1001-15C1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M27C1001-15C1?

M27C1001-15C1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M27C1001-15C1 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 M27C1001-15C1?

For technical support, including M27C1001-15C1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C1001-15C1 requirements.

6.How does Aetrix verify that M27C1001-15C1 is sourced from the original manufacturer or authorized distributors?

All M27C1001-15C1 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 M27C1001-15C1 meets industry standards.

7.What is the process for return or replacement of M27C1001-15C1?

All M27C1001-15C1 units undergo pre-shipment inspection (PSI). If there is an issue with M27C1001-15C1, 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 M27C1001-15C1 part is unused and in its original packaging.

Return procedure for M27C1001-15C1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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