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

STMicroelectronics M27C512-10C6TR

Name: M27C512-10C6TR
Brand: STMicroelectronics
SKU: M27C512-10C6TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M27C512-10C6TR

Manufacturer:: STMicroelectronics

Category:: Memory

Package:: 32-LCC (J-Lead)

Datasheet:: M27C512-10C6TR.pdf

Description:: IC EPROM 512KBIT PARALLEL 32PLCC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

M27C512-10C6TR from STMicroelectronics is a 512 Kbit (64K × 8) OTP EPROM in PLCC32 package, operating at 5V ±10%, with 100 ns access time, 30 mA active current, and 100 µA standby current. It supports TTL-level addressing/data, two-line output control (E/G), and electronic signature (20h/3Dh) for automated programming verification - used in legacy industrial controllers and firmware storage where one-time programmability and UV-erase-free reliability are required.

For engineers reviewing the M27C512-10C6TR datasheet, M27C512-10C6TR pinout, M27C512-10C6TR application, or M27C512-10C6TR equivalent, this page delivers verified timing parameters, PLCC32 terminal mapping, OTP programming voltage (12.75 V), PRESTO IIB algorithm support, and real-world system integration constraints including decoupling requirements and margin-mode verify sequencing.

Technical Context

The M27C512-10C6TR implements a CMOS-based OTP EPROM architecture with dual-control read enable (E = chip select, G = output enable), enabling low-power array partitioning. Its PRESTO IIB programming algorithm applies 100 µs pulses per byte with margin-mode verify at 6.25 V VCC and 12.75 V VPP, achieving full-program completion in ≤6 s without overprogramming.

Electronic signature mode uses A9 forced to 11.5–12.5 V to output manufacturer code 20h and device code 3Dh on Q7–Q0; all other address lines held low. Standby mode activates at E = VIH (>VCC − 0.2 V), reducing ICC to 100 µA while forcing outputs to high-Z independent of GVPP state.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	512 Kbit (64K × 8) - fixed parallel data bus width supports direct microprocessor interface without external demultiplexing.
Access Time	100 ns - defines maximum clock rate for synchronous read cycles in 8-bit bus systems (e.g., Z80, 8086 derivatives).
Supply Voltage	5 V ±10% - compatible with standard TTL/CMOS logic rails; no separate logic supply needed.
Programming Voltage	12.75 V ±0.25 V - requires dedicated VPP rail; not derived from VCC; must be applied before/with VCC.
Active Current	30 mA - determines local decoupling: 0.1 µF ceramic capacitor required per device between VCC and VSS.
Standby Current	100 µA - enables power-gating in multi-device memory banks via E-line decoding.
Electronic Signature	Manufacturer code 20h / Device code 3Dh - enables auto-identification in universal programmers without manual part selection.

Pinout & Package

PLCC32 (Plastic Leaded Chip Carrier, 32-pin) with J-lead configuration, lead-free ECOPACK® compliant, body size 11.43 mm × 13.97 mm, 1.27 mm pitch. Pin 1 marked by corner notch; orientation defined by seating plane and index mark.

Pin/Terminal	Circuit Role	Design Meaning
A0–A15	Address Inputs	16-bit address bus; latched internally on E low; A9 used for Electronic Signature voltage injection (11.5–12.5 V).
Q0–Q7	Data Outputs	8-bit bidirectional data bus; outputs driven only when E = VIL and G = VIL; high-Z otherwise.
E	Chip Enable	Primary device select; active-low; controls power state (standby at VIH, active at VIL); used for program pulse triggering.
G	Output Enable	Secondary output gate; active-low; allows shared G-bus across multiple devices while keeping deselected chips in standby.
VPP	Program Supply Input	12.75 V programming voltage input; must be stable before E pulse; removed after programming sequence completes.
VCC	Supply Voltage	5 V ±10% main supply; must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
VSS	Ground	Reference return for all signals and supplies; requires low-inductance connection to decoupling capacitors.
NC	No Connect	Pins 12 and 25 are internally unconnected; must remain floating or tied to VSS per layout best practice.

Key Features

Feature	Design Value
Two-line output control (E + G)	Enables hierarchical memory banking: E selects device, G gates output - eliminates bus contention and reduces system-level power by >99% vs single-enable designs.
PRESTO IIB programming algorithm	Reduces full-array programming time to ≤6 s with guaranteed cell margin; eliminates need for iterative overprogram/verify cycles.
Electronic Signature (20h/3Dh)	Allows automatic device recognition in production programmers - prevents mismatched algorithms and failed programming attempts.
ECOPACK® PLCC32 package	Lead-free, JEDEC JESD97-compliant; second-level interconnect marking on package and inner box label for RoHS traceability.
Margin Mode verify	Performs read verification at reduced VCC (4.2 V and 6 V) to confirm programmed cells retain data under worst-case voltage margins.

Applications

Industrial PLC Firmware Storage

Legacy Medical Device Boot Code

Use Scenario: Storing fixed boot firmware in DIN-rail mounted programmable logic controllers where field updates are unnecessary and long-term data retention is critical.

IC Role / Device Role / Timing Role: Non-volatile program memory mapped to CPU address space; accessed during cold start via 100 ns read cycle.

Use Value: OTP architecture eliminates risk of accidental erasure or corruption during operation; PLCC32 provides robust thermal cycling performance in 0–70°C industrial enclosures.

Use Scenario: Holding calibration constants and safety-critical initialization routines in Class II medical analyzers certified to IEC 62304.

IC Role / Device Role / Timing Role: Read-only configuration store accessed once per power-on reset; timing governed by tAVQV ≤100 ns and tELQV ≤100 ns.

Use Value: 100 µA standby current minimizes battery drain in backup-powered configurations; ECOPACK® compliance satisfies medical RoHS requirements.

Avionics Maintenance Interface ROM

Test Equipment Pattern Generator

Use Scenario: Embedded diagnostics module in aircraft line-replaceable units (LRUs) requiring DO-254 Level A deterministic behavior.

IC Role / Device Role / Timing Role: Fixed instruction ROM executing self-test sequences; timing validated per MIL-STD-883 method 3015.1 AC parameters.

Use Value: 100 ns access time ensures deterministic execution within tight timing budgets; UV-erase-free OTP prevents latent failure modes associated with quartz window contamination.

Use Scenario: Storing precomputed test vectors in automated circuit testers where pattern sets are finalized before deployment.

IC Role / Device Role / Timing Role: Parallel-access lookup table feeding FPGA-based pattern sequencer; synchronized to system clock via E/G handshaking.

Use Value: Two-line control allows dynamic bank selection without bus contention; 30 mA active current enables direct drive of 50 Ω transmission lines with minimal buffering.

Equivalent & Alternatives

The following parts are listed as comparable options for similar OTP EPROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AM27C512-10DC	Same 512 Kbit OTP EPROM, 100 ns access, but in PDIP28 package; no PLCC32 footprint compatibility.	Requires PCB redesign for through-hole mounting; lacks ECOPACK® lead-free certification.	Select only if legacy through-hole assembly is mandated and RoHS exemption applies.
AT27C512R-10PU	512 Kbit OTP EPROM with 100 ns access, but uses 6.25 V VCC during programming (same as M27C512); PLCC32 package available.	Electronic signature codes differ (01h/3Dh); PRESTO IIB not supported - uses standard 10 ms/byte algorithm.	Choose when longer programming time is acceptable and Atmel's signature protocol aligns with existing toolchain.

Compared with AM27C512-10DC and AT27C512R-10PU, the M27C512-10C6TR uniquely combines PLCC32 surface-mount compatibility, ECOPACK® compliance, and PRESTO IIB's sub-6-second programming - making it optimal for new industrial PCB designs requiring rapid firmware burn-in and RoHS adherence.

Availability

M27C512-10C6TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy medical device boot code, and avionics maintenance interface ROM requiring stable component supply across extended product lifecycles.

Supply support for M27C512-10C6TR 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, delivering silicon solutions for automotive, industrial, and embedded markets since 1987.

The M27C512 belongs to ST's legacy EPROM product line, designed specifically for cost-sensitive, high-reliability applications where firmware immutability, long-term data retention (>10 years), and compatibility with mature 8-bit microprocessor buses are primary requirements.

FAQ

What programming voltage and timing does M27C512-10C6TR require?

The M27C512-10C6TR requires VPP = 12.75 V ±0.25 V and VCC = 6.25 V ±0.25 V during programming. It supports the PRESTO IIB algorithm with 100 µs pulse width per byte and full-array programming in ≤6 seconds. Standard programming (non-PRESTO) is also supported but takes longer. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.

Can M27C512-10C6TR be used in place of a UV-erasable EPROM?

No - M27C512-10C6TR is OTP (one-time programmable) only and lacks the quartz window required for UV erasure. It shares pinout and timing with UV variants like M27C512-10F1, but internal structure omits UV-sensitive oxide layers. Substitution requires firmware reprogramming and validation; no physical erasure capability exists.

What decoupling is required for stable operation?

Each M27C512-10C6TR requires a 0.1 µF ceramic capacitor placed between VCC and VSS as close to the PLCC32 pins as possible. For every eight devices, add a 4.7 µF bulk electrolytic capacitor near the power supply entry point. This suppresses transient voltage spikes caused by E- and G-line switching edges, ensuring reliable read/write timing per AC specs.

How is Electronic Signature verified during programming setup?

Electronic Signature is verified by applying 11.5–12.5 V to A9 while holding all other address lines low, then toggling A0 to read manufacturer code 20h (A0 = VIL) and device code 3Dh (A0 = VIH) on Q7–Q0. This occurs at 25°C ±5°C ambient and confirms correct device identification before initiating programming - preventing algorithm mismatches in automated handlers.

M27C512-10C6TR 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:: 512Kbit

Memory Organization:: 64K x 8

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: -

Access Time:: 100 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 (11.43x13.97)

M27C512-10C6TR FAQ

1.How can I place an order for M27C512-10C6TR through Aetrix?

Please submit a Request for Quotation (RFQ) for M27C512-10C6TR 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 M27C512-10C6TR reliable?

The price and inventory of M27C512-10C6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M27C512-10C6TR is usually 5 days.

3.What payment methods are accepted for M27C512-10C6TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M27C512-10C6TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M27C512-10C6TR?

M27C512-10C6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M27C512-10C6TR 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 M27C512-10C6TR?

For technical support, including M27C512-10C6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M27C512-10C6TR requirements.

6.How does Aetrix verify that M27C512-10C6TR is sourced from the original manufacturer or authorized distributors?

All M27C512-10C6TR 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 M27C512-10C6TR meets industry standards.

7.What is the process for return or replacement of M27C512-10C6TR?

All M27C512-10C6TR units undergo pre-shipment inspection (PSI). If there is an issue with M27C512-10C6TR, 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 M27C512-10C6TR part is unused and in its original packaging.

Return procedure for M27C512-10C6TR:

1.Submit a request within 90 days.

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

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