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Microchip Technology AT27C010-90PI
- Part No.:
- AT27C010-90PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT27C010-90PI.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,896
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Product details
Overview
AT27C010-90PI 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 AT27C010-90PI datasheet, AT27C010-90PI pinout, AT27C010-90PI application, or AT27C010-90PI equivalent, key selection criteria include verified 90 ns AC timing (tACC), 35 mA active current at 5 MHz, 100 µA max standby current, JEDEC-standard PDIP-32 packaging, and Rapid™ programming compatibility with 12 V VPP.
Technical Context
The AT27C010-90PI implements a CMOS OTP EPROM architecture with addressable 128K × 8-bit organization and TTL/CMOS-compatible I/O. It uses two independent enable controls-Chip Enable (CE) and Output Enable (OE)-to manage output tri-state behavior and eliminate bus contention during multi-device operation.
Programming relies on a 100 µs pulse-width Rapid™ algorithm with 12.0 V ±0.5 V VPP applied to A9 for identification and to dedicated PGM pin, while VCC must be applied before and removed after VPP per absolute maximum ratings. The device integrates product identification code (0x1E/0x05) readable via A9 high-voltage mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576-bit (128K × 8) OTP EPROM - provides full boot code storage without refresh or write-cycle overhead. |
| Read Access Time | 90 ns (max) - ensures no WAIT states required for 11 MHz Z80 or 12.5 MHz 8086 bus timing. |
| VCC Supply | 5 V ±10% - compatible with standard logic rails; no auxiliary voltage regulators needed. |
| Active Current | 35 mA max at 5 MHz - defines power budget for sustained read bursts in real-time controllers. |
| Standby Current | 100 µA max - enables low-power hold mode during processor sleep in portable instrumentation. |
| Operating Temp | –40°C to +85°C - qualified for industrial control panels and motor drive firmware storage. |
| VPP Programming Voltage | 12.0 V ±0.5 V - requires external high-voltage source; not derived from VCC. |
Pinout & Package
AT27C010-90PI is supplied in a 32-lead, 0.600" wide plastic dual inline package (PDIP), JEDEC MS-011 compliant, with 0.1" lead pitch and through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus interface; A0 = LSB, A16 = MSB; latched on CE/OE assertion. |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus; outputs driven only when CE = VIL and OE = VIL. |
| CE | Chip Enable | Primary device select; high-Z outputs when CE = VIH, enabling multi-chip memory decoding. |
| OE | Output Enable | Secondary output gate; allows shared bus use with other devices when CE is active. |
| PGM | Program Strobe | Active-low pulse input (100 µs width) that initiates byte programming when VPP = 12 V. |
| VPP | Programming Voltage | 12 V input pin; must be applied after VCC and removed before VCC to prevent latchup. |
| VCC | Power Supply | +5 V supply; powers logic core and I/O buffers; decoupling capacitor (0.1 µF ceramic) required. |
| GND | Ground | Reference node for all signals and supplies; separate ground plane recommended for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time - reduces firmware update cycle time by >5× vs. legacy EPROMs. |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device Code (0x05) readable via A9 high-voltage mode - enables automated programmer recognition. |
| Two-Line Control Architecture | Independent CE and OE inputs - supports flexible memory mapping and eliminates bus contention in multi-peripheral systems. |
| ESD & Latchup Robustness | 2000 V HBM ESD rating and 200 mA latchup immunity - ensures reliability in handling and board-level assembly. |
| JEDEC Standard Packages | PDIP-32, PLCC-32, TSOP-32 footprints - enables drop-in replacement across form factors without redesign. |
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 automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to CPU address space; accessed during cold start and watchdog reset recovery. Use Value: 90 ns tACC eliminates WAIT state insertion on 80C188EB buses, preserving deterministic scan cycle timing. |
Use Scenario: Providing immutable startup code for 8-bit microcontrollers (e.g., 8051, Z8) in medical diagnostic equipment where firmware integrity is critical. IC Role / Device Role / Timing Role: Primary ROM executing power-on self-test and hardware initialization before RAM-based application load. Use Value: OTP architecture guarantees unalterable code execution - no risk of accidental overwrite during field service or EMI events. |
| Automotive Engine Control Module (ECM) | Test Equipment Calibration Data Storage |
|
Use Scenario: Holding calibration tables and fail-safe operating parameters in engine control units operating under under-hood thermal stress. IC Role / Device Role / Timing Role: Read-only lookup table memory accessed by MCU during fuel injection timing calculations. Use Value: Industrial-grade –40°C to +85°C operation and 200 mA latchup immunity ensure robustness against automotive transients and thermal cycling. |
Use Scenario: Archiving instrument-specific calibration coefficients and linearity correction maps in benchtop oscilloscopes and DMMs. IC Role / Device Role / Timing Role: Secure, tamper-proof storage of factory-trimmed constants referenced during ADC/DAC conversion routines. Use Value: Integrated product ID code allows automated calibration verification during manufacturing test, preventing mismatched firmware loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-90JC | Same 128K × 8 OTP EPROM, identical AC/DC specs, but in 32-lead PLCC package instead of PDIP. | Requires surface-mount PCB layout; unsuitable for through-hole prototyping or legacy socketed designs. | Select when board space constraints favor PLCC or reflow assembly is used. |
| AM27C010-90DC | Functionally equivalent 1-Mbit OTP EPROM (AMD), same 90 ns speed grade and PDIP-32 package, but lacks integrated product ID code. | No A9-based manufacturer/device ID readout - limits compatibility with automated programming equipment requiring ID validation. | Select when cost sensitivity outweighs need for ID-driven programming verification. |
Compared with AT27C010-90PI, the AT27C010-90JC offers identical electrical performance in a surface-mount package for space-constrained designs, while the AM27C010-90DC provides pin-compatible functionality without ID code support-reducing programming flexibility but lowering BOM cost.
Availability
AT27C010-90PI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot ROM, and automotive ECM calibration data storage requiring stable component supply over extended production lifecycles.
Supply support for AT27C010-90PI 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 was a U.S.-based semiconductor company specializing in microcontrollers, nonvolatile memory, and secure authentication ICs before its acquisition by Microchip Technology in 2016.
The AT27C010(L) series was developed as a high-reliability OTP EPROM family targeting firmware storage in industrial, automotive, and embedded computing systems where code immutability and long-term data retention are essential.
FAQ
What is the maximum allowed VPP voltage for programming the AT27C010-90PI?
The AT27C010-90PI requires VPP = 12.0 V ±0.5 V during programming, with absolute maximum rating of +14.0 V. Exceeding 12.5 V risks oxide breakdown in the floating-gate cells, potentially causing permanent bit corruption. Always apply VCC before VPP and remove VPP before VCC per the datasheet sequence.
Does the AT27C010-90PI support read operations at 3.3 V?
No, the AT27C010-90PI is specified only for 5 V ±10% operation. Its input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and output drive levels (VOH ≥ 2.4 V at –400 µA) are optimized for 5 V TTL/CMOS logic families. Using 3.3 V VCC will result in undefined read behavior and potential bus contention.
Can the AT27C010-90PI be reprogrammed after initial programming?
No, the AT27C010-90PI is a one-time programmable (OTP) EPROM. Once a memory cell is programmed (bit changed from 1 to 0), it cannot be reverted to 1. Erasure requires UV exposure - which the plastic PDIP package blocks - making the device permanently programmed after the first write cycle.
What decoupling capacitance is required for stable AT27C010-90PI operation?
A 0.1 µF ceramic capacitor must be placed between VCC and GND, mounted as close as possible to the AT27C010-90PI pins. For systems with multiple AT27C010-90PI devices, add a 4.7 µF bulk electrolytic capacitor near the power entry point to suppress array-level supply droop during simultaneous read accesses.
How is the product identification code read from the AT27C010-90PI?
The AT27C010-90PI identification code is accessed by setting A9 = 12.0 V (VH), A0 = VIL or VIH to select Manufacturer ID (0x1E) or Device Code (0x05), and holding A1–A16 = VIL. CE and OE must both be low. This mode is used by programmers to auto-detect device type and apply correct algorithms.
AT27C010-90PI 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:
- 90 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
AT27C010-90PI FAQ
1.How can I place an order for AT27C010-90PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-90PI 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 AT27C010-90PI reliable?
The price and inventory of AT27C010-90PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-90PI is usually 5 days.
3.What payment methods are accepted for AT27C010-90PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-90PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-90PI?
AT27C010-90PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-90PI 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 AT27C010-90PI?
For technical support, including AT27C010-90PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-90PI requirements.
6.How does Aetrix verify that AT27C010-90PI is sourced from the original manufacturer or authorized distributors?
All AT27C010-90PI 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 AT27C010-90PI meets industry standards.
7.What is the process for return or replacement of AT27C010-90PI?
All AT27C010-90PI units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-90PI, 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 AT27C010-90PI part is unused and in its original packaging.
Return procedure for AT27C010-90PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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