My Inquiry
My Account
Microchip Technology AT27C010L-12PI
- Part No.:
- AT27C010L-12PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT27C010L-12PI.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,545
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT27C010L-12PI from Atmel is a 128K × 8-bit (1 Mbit) one-time programmable EPROM with 45 ns read access time, 5 V ±10% supply operation, and industrial temperature range (–40°C to +85°C). It features CMOS/TTL-compatible I/O, dual-line control (CE/OE), and rapid programming at 100 µs/byte - enabling firmware storage in microprocessor-based embedded systems without wait states.
For engineers reviewing the AT27C010L-12PI datasheet, AT27C010L-12PI pinout, AT27C010L-12PI application, or AT27C010L-12PI equivalent, key selection criteria include standby current (100 µA max), VPP programming voltage (12.0 V ±0.5 V), JEDEC-standard 32-lead PDIP package, and OTP reliability for fixed-code boot memory in legacy industrial controllers.
Technical Context
The AT27C010L-12PI implements a parallel-addressed OTP EPROM architecture with 17 address lines (A0–A16) and 8 bidirectional data outputs (O0–O7), controlled by CE and OE for bus contention management. Its Rapid™ programming algorithm uses precise 100 µs PGM pulses at VPP = 12.0 V ±0.5 V and VCC = 6.5 V during programming mode.
It supports product identification via A9 high-voltage strobe (11.5–12.5 V) and A0 toggle to read manufacturer (0x1E) and device code (0x05) bytes. Absolute maximum ratings include –2.0 V to +7.0 V on all pins except A9 (–2.0 V to +14.0 V) and VPP (–2.0 V to +14.0 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576 bits (128K × 8), sufficient for full boot firmware images in 8-bit/16-bit microcontrollers |
| Read Access Time | 45 ns (tACC), eliminates WAIT states in 5 MHz Z80, 8051, or 68K-based systems |
| VCC Supply | 5 V ±10%, compatible with standard logic rails without regulation overhead |
| Standby Current | 100 µA max (ISB1), enables low-power retention in always-on industrial modules |
| Active Current | 25 mA max at 5 MHz (ICC), optimized for sustained read throughput in real-time control loops |
| VPP Programming Voltage | 12.0 V ±0.5 V (VID), requires dedicated HV supply or charge pump - not 5 V tolerant |
| Operating Temperature | –40°C to +85°C (industrial grade), validated for factory automation and motor drive environments |
Pinout & Package
AT27C010L-12PI is supplied in a 32-lead, 0.600" wide plastic dual inline package (PDIP), per JEDEC MS-016 AE outline. Pin 1 is marked with a notch or dot; package height ≤ 4.95 mm, body width 15.2 mm, lead pitch 2.54 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit parallel address bus; A0 = LSB, A16 = MSB; latched on CE/OE assertion |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus; high-impedance when CE or OE is high |
| CE | Chip Enable | Active-low global enable; must be stable before address setup to avoid spurious reads |
| OE | Output Enable | Active-low output gate; decouples EPROM from data bus during idle cycles |
| PGM | Program Strobe | Active-low pulse input (100 µs width) that triggers byte programming when VPP = 12 V |
| VPP | Programming Voltage | 12.0 V ±0.5 V input; must be applied after VCC and removed before VCC during programming |
| VCC | Power Supply | +5 V ±10% main supply; powers logic and output drivers in read mode |
| GND | Ground | Reference return path; requires local 0.1 µF ceramic capacitor per device per datasheet |
| NC | No Connect | Pin 28 (PDIP); internally unconnected - must remain floating or grounded per layout rules |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop - reduces production burn-in cycle time by >70% vs. legacy EPROMs |
| Integrated Product Identification Code | Manufacturer ID (0x1E) and Device Code (0x05) readable via A9/A0 strobe - enables automated programmer validation and BOM traceability |
| Two-Line Control Architecture | Independent CE and OE inputs allow flexible bus arbitration - prevents contention in multi-peripheral systems without external logic |
| High-Reliability CMOS Process | 2000 V HBM ESD rating and 200 mA latchup immunity - suitable for assembly in non-EPA environments and field-replaceable modules |
| JEDEC-Standard Packaging | 32P6 PDIP footprint - ensures drop-in compatibility with legacy sockets used in industrial PLCs and test equipment |
Applications
| Industrial PLC Firmware Storage | Legacy Microcontroller Boot ROM |
|---|---|
Use Scenario: Fixed-function ladder logic and I/O mapping stored in programmable logic controllers deployed in factory-floor environments. IC Role / Device Role / Timing Role: Non-volatile boot memory providing deterministic 45 ns instruction fetch timing to 8051 or Z80 derivatives. Use Value: Eliminates reliance on slow serial EEPROM or external flash; supports hot-swap replacement without reprogramming tools onsite. |
Use Scenario: Immutable startup code for medical diagnostic instruments using obsolete 8-bit CPUs where firmware updates are rare or prohibited. IC Role / Device Role / Timing Role: OTP EPROM acting as primary code store with guaranteed read stability over 10+ year service life. Use Value: Immune to bit corruption from EMI or power glitches - critical for Class IIa medical device certification compliance. |
| Automated Test Equipment (ATE) Pattern Memory | Avionics Maintenance Terminal BIOS |
Use Scenario: Storing fixed digital stimulus/response patterns in semiconductor wafer probers requiring repeatable, jitter-free timing. IC Role / Device Role / Timing Role: Parallel-accessed pattern buffer synchronized to system clock via CE/OE edge control. Use Value: 45 ns tACC enables direct interface to 20+ MHz pattern generators without glue logic or FIFO buffering. |
Use Scenario: Boot firmware for portable avionics ground support terminals operating across –40°C to +70°C ambient ranges. IC Role / Device Role / Timing Role: Industrial-grade OTP EPROM delivering verified code integrity under thermal cycling and vibration stress. Use Value: Qualified to –40°C to +85°C with 100 µA ISB1 - extends battery life in handheld maintenance tools during extended field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-12PI | Higher active current (35 mA vs. 25 mA), same 45 ns speed and PDIP package | Suitable where system power budget allows higher read-mode draw | Select only if legacy design already uses AT27C010-12PI and firmware compatibility is prioritized over power savings |
| AM27C010-12DC | Same 128K×8 OTP EPROM, 45 ns, but AMD-manufactured with identical pinout and AC specs | Validated in aerospace programs requiring dual-sourced components | Use when qualifying alternate suppliers for long-lifecycle military or defense platforms |
Compared with AT27C010L-12PI, AT27C010-12PI trades 10 mA lower standby current for 10 mA higher active draw - ideal for infrequently accessed firmware; AM27C010-12DC offers second-source assurance without layout or timing changes.
Availability
AT27C010L-12PI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot ROM, automated test equipment pattern memory, and avionics maintenance terminal BIOS requiring stable component supply across extended product lifecycles.
Supply support for AT27C010L-12PI 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
Atmel Corporation (now part of Microchip Technology) is a fabless semiconductor company specializing in microcontrollers, non-volatile memory, and secure authentication ICs for industrial and automotive markets.
The AT27C010(L) series was designed as a low-power, high-reliability OTP EPROM family targeting firmware storage in cost-sensitive, long-lifecycle embedded systems where code immutability and JEDEC socket compatibility are mandatory.
FAQ
What is the programming voltage requirement for AT27C010L-12PI?
The AT27C010L-12PI requires VPP = 12.0 V ±0.5 V applied to pin 1 during programming, with strict sequencing: VCC must be applied before VPP and removed after VPP. This voltage is not used in read mode and must be isolated from the 5 V logic rail using dedicated switching circuitry or a programmable HV supply. Failure to observe this sequence risks permanent damage to the AT27C010L-12PI.
Can AT27C010L-12PI be used as a direct replacement for AT27C010-12PI?
Yes, the AT27C010L-12PI is pin-compatible and functionally identical to AT27C010-12PI in read mode, but draws only 25 mA active current versus 35 mA - making it a drop-in power-optimized substitute. Both share identical 45 ns access time, 32P6 PDIP package, and programming algorithm. The AT27C010L-12PI retains full compatibility with existing sockets and programmers calibrated for the AT27C010-12PI.
What is the purpose of the NC pin on AT27C010L-12PI?
Pin 28 of the AT27C010L-12PI is designated NC (No Connect) and is internally unconnected. It must be left floating or tied to GND per PCB layout best practices - never driven high or used as a signal line. This pin exists solely for mechanical symmetry in the 32-lead PDIP package and has no electrical function in the AT27C010L-12PI's operation or programming sequence.
Does AT27C010L-12PI support automatic product identification?
Yes, the AT27C010L-12PI implements an Integrated Product Identification Code accessible via A9 and A0. Applying VH (11.5–12.5 V) to A9 while toggling A0 reads Manufacturer ID (0x1E) or Device Code (0x05). This feature enables automated verification in production programming stations and ensures correct algorithm selection - a core capability confirmed in the AT27C010L-12PI datasheet Rev. 0321J.
What decoupling capacitors are required for stable AT27C010L-12PI operation?
The AT27C010L-12PI requires two decoupling capacitors: a 0.1 µF high-frequency ceramic capacitor placed between VCC and GND as close as possible to pins 16 and 32, plus a 4.7 µF bulk electrolytic capacitor near the power entry point for arrays. These prevent transient excursions during CE transitions that could exceed absolute maximum ratings and cause non-conformance - a mandatory design rule specified for every AT27C010L-12PI installation.
AT27C010L-12PI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- 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:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 120 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-PDIP
AT27C010L-12PI FAQ
1.How can I place an order for AT27C010L-12PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010L-12PI 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 AT27C010L-12PI reliable?
The price and inventory of AT27C010L-12PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010L-12PI is usually 5 days.
3.What payment methods are accepted for AT27C010L-12PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010L-12PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010L-12PI?
AT27C010L-12PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010L-12PI 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 AT27C010L-12PI?
For technical support, including AT27C010L-12PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010L-12PI requirements.
6.How does Aetrix verify that AT27C010L-12PI is sourced from the original manufacturer or authorized distributors?
All AT27C010L-12PI 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 AT27C010L-12PI meets industry standards.
7.What is the process for return or replacement of AT27C010L-12PI?
All AT27C010L-12PI units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010L-12PI, 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 AT27C010L-12PI part is unused and in its original packaging.
Return procedure for AT27C010L-12PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT27C010L-12PI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
