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Microchip Technology AT27C010L-12PC
- Part No.:
- AT27C010L-12PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT27C010L-12PC.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,124
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Product details
Overview
AT27C010L-12PC from Atmel is a 1-Mbit (128K × 8) one-time programmable EPROM optimized for low-power embedded firmware storage, featuring 45 ns read access time, 5V ±10% single-supply operation, and industrial temperature range (–40°C to +85°C). It supports JEDEC-standard 32-lead PDIP packaging and delivers 25 mA active current at 5 MHz with <100 µA standby draw.
For engineers reviewing the AT27C010L-12PC datasheet, AT27C010L-12PC pinout, AT27C010L-12PC application, or AT27C010L-12PC equivalent, key selection criteria include OTP reliability, rapid 100 µs/byte programming, CMOS/TTL I/O compatibility, integrated product identification code, and dual-line control (CE/OE) for bus contention management in microprocessor systems.
Technical Context
The AT27C010L-12PC implements a parallel-addressable OTP EPROM architecture with 17 address lines (A0–A16), 8 bidirectional data outputs (O0–O7), and dedicated PGM strobe for high-reliability programming. Its two-line enable scheme (CE and OE) enables flexible memory-mapped or I/O-mapped interfacing in 8-bit microcontroller systems.
It uses Atmel's Rapid™ Programming Algorithm with 100 µs/byte typical pulse width and 13.0 V VPP programming voltage, supported by on-chip product identification (Manufacturer ID = 0x1E, Device ID = 0x05) accessed via A9/VH and A0 toggling-enabling automated programmer recognition and algorithm selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576-bit (128K × 8) OTP EPROM - provides non-volatile firmware storage without battery backup or refresh overhead. |
| Read Access Time | 45 ns max - eliminates WAIT states in 5 MHz Z80, 8051, and 68K-based systems requiring fast instruction fetch. |
| VCC Supply | 5V ±10% - compatible with standard logic rails; no auxiliary voltage required for read mode. |
| Active Current | 25 mA max at 5 MHz - reduces thermal load and power supply sizing vs. standard AT27C010 (35 mA). |
| Standby Current | 100 µA max - enables low-quiescent power retention in battery-backed or energy-sensitive applications. |
| Programming Voltage | VPP = 13.0 V ±0.25 V - requires external high-voltage source during programming; not needed for read operation. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control, instrumentation, and telecom equipment. |
Pinout & Package
AT27C010L-12PC is supplied in a 32-lead, 0.600" wide plastic dual in-line package (PDIP), per JEDEC MS-011AA. Pin 1 is index-marked; leads are tin-lead plated with 0.025" pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit parallel address bus; selects one of 131,072 bytes; TTL/CMOS compatible thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V). |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus; active-low OE and CE required for valid output; VOL ≤ 0.4 V @ 2.1 mA, VOH ≥ 2.4 V @ –400 µA. |
| CE | Chip Enable | Primary device select; must be low for read or program; high-Z output when high (standby mode). |
| OE | Output Enable | Secondary output gate; controls data bus drive; allows CE-controlled standby while maintaining output isolation. |
| PGM | Program Strobe | Active-low pulse input (100 µs width) that initiates byte programming when VPP = 13 V and CE = low. |
| VCC | Power Supply | +5 V ±10% main supply; powers logic and outputs; must be applied before/removed after VPP during programming. |
| VPP | Programming Voltage | +13.0 V ±0.25 V input for programming; disconnected or tied to VCC during read; requires 0.1 µF bypass to GND. |
| GND | Ground Reference | Signal and power return; decoupling capacitor (0.1 µF ceramic) must be placed adjacent to VCC–GND pins. |
| NC | No Connect | Pin 28 (PDIP); electrically isolated; must remain unconnected per design to avoid latch-up risk. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify/reprogram loop - cuts firmware update cycles by >5× vs. legacy EPROMs. |
| Integrated Product Identification Code | Manufacturer ID (0x1E) and Device ID (0x05) readable via A9/VH and A0 toggle - enables plug-and-play programmer compatibility and BOM traceability. |
| Two-Line Control Architecture | Dual CE/OE enables hierarchical bus arbitration - prevents contention in multi-device memory maps without external logic. |
| High-Reliability Process | 2000 V HBM ESD rating and 200 mA latchup immunity - ensures robustness in manufacturing handling and field deployment. |
| JEDEC-Standard Packaging | 32P6 PDIP footprint - supports socket-based prototyping, rework, and legacy PCB designs without adapter. |
Applications
| Industrial PLC Firmware Storage | Legacy Microcontroller Boot ROM |
|---|---|
|
Use Scenario: Storing fixed ladder logic and I/O configuration in DIN-rail mounted programmable logic controllers operating in factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Non-volatile boot memory mapped to CPU address space; provides deterministic 45 ns instruction fetch timing critical for real-time scan cycle execution. Use Value: Eliminates need for external wait-state generators or slower serial flash, preserving MCU clock budget while ensuring firmware integrity across 10+ year deployments. |
Use Scenario: Providing immutable startup code and peripheral initialization routines for 8-bit microcontrollers (e.g., 8051, PIC16C) in medical diagnostic instruments where firmware corruption is unacceptable. IC Role / Device Role / Timing Role: Parallel-addressed EPROM acting as reset-vector ROM; asserts valid opcode within 45 ns of address stabilization to meet tight reset timing budgets. Use Value: Guarantees first-instruction execution without software intervention or external configuration - essential for Class II medical device regulatory compliance. |
| Telecom Line Card Configuration | Automotive Engine Control Module Calibration |
|
Use Scenario: Holding hardware-specific configuration tables (e.g., DAC gain offsets, filter coefficients) on TDM line interface cards deployed in central office switching systems. IC Role / Device Role / Timing Role: Static data repository accessed only at power-on or hot-swap initialization; CE-driven standby minimizes leakage during idle periods. Use Value: Delivers <100 µA standby current and industrial temp rating - extends card service life and reduces cooling requirements in dense chassis. |
Use Scenario: Storing engine calibration maps (fuel timing, spark advance) in early-generation automotive ECUs where EEPROM endurance was insufficient for field updates. IC Role / Device Role / Timing Role: OTP memory holding safety-critical lookup tables; programmed once at final test using 13 V VPP and verified via integrated ID code. Use Value: Provides tamper-resistant, bit-perfect data retention over 15+ years and 100,000 thermal cycles - meeting ISO/TS 16949 long-term reliability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-12PC | Higher active current (35 mA vs. 25 mA); same 45 ns speed grade, pinout, and package. | Less suitable for thermally constrained or battery-assisted industrial systems requiring low active power. | Select when legacy system design already accommodates higher ICC or when cost sensitivity outweighs power savings. |
| AM27C010-12DC | AMD-manufactured 1-Mbit OTP EPROM; identical 32-pin PDIP, 45 ns access, 5 V supply, but lacks integrated ID code and Rapid™ programming. | Requires manual algorithm selection in programmers; no built-in manufacturer/device verification - increases programming setup time. | Choose for cost-driven replacements where programming infrastructure does not rely on auto-ID features. |
Compared with AT27C010-12PC and AM27C010-12DC, the AT27C010L-12PC offers superior power efficiency in active mode and unique programmable identification support - making it optimal for new industrial designs prioritizing thermal margin and automated production programming.
Availability
AT27C010L-12PC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot ROM, and telecom line card configuration requiring stable component supply, long-lifecycle availability, and JEDEC-standard PDIP compatibility.
Supply support for AT27C010L-12PC 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, automotive, and consumer applications.
The AT27C010(L) series was designed as a drop-in upgrade path for 27C64/27C256 EPROMs, delivering faster access, lower power, and enhanced programming reliability for firmware storage in resource-constrained embedded systems.
FAQ
What is the maximum operating temperature range for the AT27C010L-12PC?
The AT27C010L-12PC is rated for industrial temperature operation from –40°C to +85°C. This range is confirmed in the Ordering Information table on page 11 of the datasheet and applies specifically to all AT27C010L variants with "I" suffix (e.g., AT27C010L-12PI). The "PC" suffix denotes PDIP packaging, which maintains full specification compliance across this range.
Does the AT27C010L-12PC require a separate programming voltage during normal read operation?
No, the AT27C010L-12PC operates from a single 5V ±10% supply during read mode. VPP (13.0 V) is required only during programming and must be disconnected or floated during read. The datasheet explicitly states "Only one 5V power supply in normal read mode operation" and warns that VPP must be applied after VCC and removed before VCC during programming sequences.
How is the Integrated Product Identification Code accessed on the AT27C010L-12PC?
The AT27C010L-12PC identification code is read by asserting A9 at 12.0 V (VH) while holding A1–A16 low and toggling A0 between VIL and VIH. This selects either the Manufacturer ID (0x1E) or Device ID (0x05), both output on O7–O0. This method is documented in the "Product Identification" section (page 4) and requires no special command sequence - only precise voltage control on A9.
Can the AT27C010L-12PC be used as a direct replacement for the AT27C010-12PC in an existing design?
Yes, the AT27C010L-12PC is pin-compatible and functionally identical to the AT27C010-12PC except for reduced active current (25 mA vs. 35 mA) and identical 45 ns access time. All DC/AC specifications, pinout, programming algorithm, and timing waveforms match - making it a drop-in power-optimized replacement without layout or firmware changes.
What decoupling capacitance is required for stable operation of the AT27C010L-12PC?
The AT27C010L-12PC requires a 0.1 µF high-frequency ceramic capacitor placed between VCC and GND, as close to the device pins as possible. For systems with multiple EPROMs, a 4.7 µF bulk electrolytic capacitor should also be added near the power entry point. These values are specified in the "System Considerations" section (page 2) to suppress transient excursions during CE transitions.
AT27C010L-12PC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-PDIP
AT27C010L-12PC FAQ
1.How can I place an order for AT27C010L-12PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010L-12PC 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-12PC reliable?
The price and inventory of AT27C010L-12PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010L-12PC is usually 5 days.
3.What payment methods are accepted for AT27C010L-12PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010L-12PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010L-12PC?
AT27C010L-12PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010L-12PC 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-12PC?
For technical support, including AT27C010L-12PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010L-12PC requirements.
6.How does Aetrix verify that AT27C010L-12PC is sourced from the original manufacturer or authorized distributors?
All AT27C010L-12PC 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-12PC meets industry standards.
7.What is the process for return or replacement of AT27C010L-12PC?
All AT27C010L-12PC units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010L-12PC, 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-12PC part is unused and in its original packaging.
Return procedure for AT27C010L-12PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT27C010L-12PC Tags
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