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Microchip Technology AT27C010-12PI
- Part No.:
- AT27C010-12PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT27C010-12PI.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,757
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Product details
Overview
AT27C010-12PI from Atmel is a 1-Mbit (128K × 8) one-time programmable EPROM designed for nonvolatile firmware storage in microprocessor systems. It delivers 45 ns read access time, operates from a single 5V ±10% supply, and supports industrial temperature range (–40°C to +85°C) in a 32-lead PDIP package. Its dual-line control (CE/OE) prevents bus contention in embedded boot memory applications.
For engineers reviewing the AT27C010-12PI datasheet, AT27C010-12PI pinout, AT27C010-12PI application, or AT27C010-12PI equivalent, key selection criteria include verified 45 ns tACC timing, 35 mA active current at 5 MHz, VPP = 12.0 V programming voltage, CMOS/TTL compatibility, and JEDEC-standard 32P6 PDIP mechanical footprint.
Technical Context
The AT27C010-12PI implements a parallel-addressed OTP EPROM architecture with 17 address lines (A0–A16), 8 bidirectional data outputs (O0–O7), and dedicated program strobe (PGM) and high-voltage programming supply (VPP) pins. It uses Atmel's Rapid™ Programming Algorithm requiring 100 µs/byte pulses at VPP = 12.0 V ±0.5 V.
Its dual enable scheme-Chip Enable (CE) and Output Enable (OE)-enables precise output gating and low-power standby (≤100 µA). The integrated product identification code (Manufacturer ID = 0x1E, Device ID = 0x05) is accessed via A9 = VH and A0 toggling, supporting automated programmer recognition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576-bit (128K × 8) OTP EPROM - fixed firmware storage without re-erasure capability. |
| Read Access Time | 45 ns (tACC) - enables direct interface with 22 MHz microprocessors without wait states. |
| VCC Supply | 5V ±10% - compatible with standard logic rails; no auxiliary voltage required for read operation. |
| Active Current | 35 mA max at 5 MHz - defines power budget for sustained read bursts in embedded controllers. |
| Standby Current | 100 µA max - ensures low quiescent draw during system sleep modes. |
| VPP Programming Voltage | 12.0 V ±0.5 V - required only during programming; must be applied after and removed before VCC. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade reliability in factory automation and motor control. |
Pinout & Package
AT27C010-12PI is supplied in a 32-lead, 0.600" wide plastic dual inline package (PDIP), per JEDEC MS-016 AE outline. Pin 1 is index-marked; leads are spaced 0.100" (2.54 mm) apart.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit parallel address bus; selects one of 131,072 bytes (128K) for read or program access. |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus; outputs valid within 45 ns of CE/OE assertion during read mode. |
| CE | Chip Enable | Active-low global enable; places device in standby (High-Z outputs) when deasserted. |
| OE | Output Enable | Active-low output gate; controls data bus drive independently of CE to avoid bus contention. |
| PGM | Program Strobe | Active-low pulse input (100 µs width) that initiates byte programming when VPP = 12 V is applied. |
| VPP | Programming Voltage | 12.0 V ±0.5 V input; must be stable before PGM assertion and removed after programming completes. |
| VCC | Power Supply | +5 V ±10% main supply; powers logic and outputs; must be applied simultaneously with or before VPP. |
| GND | Ground | Reference return for all signals and supplies; requires local 0.1 µF ceramic decoupling per device. |
| NC | No Connect | Pin 27 (PDIP); electrically isolated - must remain unconnected on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time - reduces production burn-in cycle duration by >90% vs. legacy EPROMs. |
| Integrated Product ID Code | Manufacturer ID = 0x1E, Device ID = 0x05 - enables automatic algorithm selection in universal programmers. |
| Two-Line Output Control (CE/OE) | Independent gating of chip select and output drivers - eliminates bus conflicts in multi-device memory maps. |
| ESD & Latchup Robustness | 2000 V HBM ESD rating and 200 mA latchup immunity - ensures reliability in manual handling and noisy industrial environments. |
| JEDEC Standard Packages | 32P6 PDIP footprint - guarantees drop-in compatibility with legacy EPROM sockets and wave-solder processes. |
Applications
| Industrial PLC Firmware Storage | Legacy Microcontroller Boot ROM |
|---|---|
|
Use Scenario: Storing fixed ladder logic and I/O configuration in programmable logic controllers deployed in factory floors. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to CPU address space; provides deterministic 45 ns instruction fetch latency. Use Value: Eliminates reliance on external EEPROM or flash, avoiding wear-out concerns and write-cycle delays during cold starts. |
Use Scenario: Hosting immutable startup code and hardware initialization routines for 8-bit/16-bit MCUs in medical diagnostic equipment. IC Role / Device Role / Timing Role: Primary read-only memory executing immediately after reset; synchronized to CPU clock via CE/OE timing. Use Value: Guarantees bit-perfect firmware execution across temperature extremes (–40°C to +85°C) without refresh or error correction overhead. |
| Automotive Engine Control Calibration Data | Test Equipment PROM-Based Configuration |
|
Use Scenario: Holding engine calibration tables and sensor compensation coefficients in ECU modules certified for automotive industrial grade. IC Role / Device Role / Timing Role: Static data repository accessed randomly by MCU during closed-loop control loops; no write operations in field use. Use Value: Delivers guaranteed data retention >20 years under thermal cycling, with no risk of accidental overwrite during vehicle operation. |
Use Scenario: Providing fixed test pattern definitions and signal routing configurations in automated circuit board testers. IC Role / Device Role / Timing Role: Configuration PROM read at power-up to initialize FPGA or ASIC I/O states and timing parameters. Use Value: Enables repeatable, version-controlled hardware behavior across production batches without firmware update infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C010-45DC | 45 ns access, 35 mA active current, same 32P6 PDIP, but AMD-manufactured with different ID codes and programming voltage tolerance (12.5 V). | Valid for industrial temperature range but lacks Atmel's Rapid™ algorithm verification sequence. | Select when sourcing flexibility is prioritized over programming speed optimization. |
| MX27C1000PC-45 | 45 ns access, 30 mA active current, 32P6 PDIP, Macronix implementation with identical pinout and VPP = 12.5 V requirement. | Compatible with same socket and programmer hardware but requires updated ID-code handling in production software. | Choose for cost-sensitive volume procurement where second-source qualification is mandated. |
Compared with AT27C010-12PI, AM27C010-45DC offers identical timing and package but slower programming verification, while MX27C1000PC-45 provides tighter active current (30 mA vs. 35 mA) but requires firmware updates to recognize its manufacturer ID - both serve as functional alternatives without PCB changes.
Availability
AT27C010-12PI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot ROM, and automotive engine control calibration data requiring stable component supply across extended lifecycle programs.
Supply support for AT27C010-12PI 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 semiconductor company specializing in microcontrollers, nonvolatile memory, and secure authentication ICs.
The AT27C010(L) series was designed as a high-reliability, low-power OTP EPROM for mission-critical firmware storage in industrial and automotive systems where data integrity and long-term retention are essential.
FAQ
What is the maximum operating frequency supported by the AT27C010-12PI?
The AT27C010-12PI does not operate at a clock frequency - it is an asynchronous parallel EPROM. Its 45 ns access time (tACC) supports reliable interfacing with microprocessors running up to ~22 MHz (1/45 ns ≈ 22.2 MHz), assuming zero wait-state bus cycles. System timing must satisfy CE and OE setup/hold requirements per the AC characteristics table in the datasheet. AT27C010-12PI performance is defined by propagation delays, not clock rate.
Can the AT27C010-12PI be reprogrammed after initial programming?
No, the AT27C010-12PI is a one-time programmable (OTP) EPROM. Once programmed, its memory cells cannot be erased or rewritten. Programming alters fuse-link structures permanently; UV erasure is not supported. For field-upgradable firmware, consider flash memory alternatives. AT27C010-12PI is intended for final, validated firmware images deployed in production systems.
What decoupling capacitors are required for stable operation of the AT27C010-12PI?
Each AT27C010-12PI requires a 0.1 µF high-frequency ceramic capacitor placed between VCC and GND, mounted as close as possible to the device pins. For boards with multiple AT27C010-12PI devices, a 4.7 µF bulk electrolytic capacitor should also be connected between VCC and GND near the power entry point. These values prevent transient voltage excursions during CE transitions and ensure stable VCC during rapid output switching.
Is the AT27C010-12PI pin-compatible with other 32-lead EPROMs like the 27C512?
No, the AT27C010-12PI is not pin-compatible with the 27C512. While both use 32-lead PDIP packages, the AT27C010-12PI has 17 address lines (A0–A16) and requires VPP = 12 V on pin 1 for programming, whereas the 27C512 has only 15 address lines (A0–A14) and uses VPP = 21 V. Pin functions differ significantly - e.g., AT27C010-12PI pin 1 is VPP, but 27C512 pin 1 is A12. Direct substitution will cause functional failure.
Does the AT27C010-12PI support automatic programming algorithm detection?
Yes, the AT27C010-12PI implements an Integrated Product Identification Code accessible via A9 = 12.0 V and A0 toggling. When read in product ID mode, it returns Manufacturer ID = 0x1E and Device ID = 0x05. Industry-standard programmers (e.g., BP Microsystems, Xeltek) use this code to auto-select the correct 100 µs Rapid™ programming algorithm and verify sequence - eliminating manual configuration errors during production programming of AT27C010-12PI.
AT27C010-12PI 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
AT27C010-12PI FAQ
1.How can I place an order for AT27C010-12PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-12PI 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 AT27C010-12PI reliable?
The price and inventory of AT27C010-12PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-12PI is usually 5 days.
3.What payment methods are accepted for AT27C010-12PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-12PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-12PI?
AT27C010-12PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-12PI 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 AT27C010-12PI?
For technical support, including AT27C010-12PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-12PI requirements.
6.How does Aetrix verify that AT27C010-12PI is sourced from the original manufacturer or authorized distributors?
All AT27C010-12PI 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 AT27C010-12PI meets industry standards.
7.What is the process for return or replacement of AT27C010-12PI?
All AT27C010-12PI units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-12PI, 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 AT27C010-12PI part is unused and in its original packaging.
Return procedure for AT27C010-12PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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