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Microchip Technology AT27C010L-45PI
- Part No.:
- AT27C010L-45PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT27C010L-45PI.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,433
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Product details
Overview
AT27C010L-45PI from Atmel is a 128K × 8-bit one-time programmable EPROM (OTP EPROM) optimized for low-power embedded firmware storage, featuring 45 ns read access time, 5 V ±10% single-supply operation, and industrial temperature range (–40°C to +85°C). It delivers 25 mA active current at 5 MHz and <100 µA standby current, enabling direct interface with 8-bit microprocessors without wait states.
For engineers reviewing the AT27C010L-45PI datasheet, AT27C010L-45PI pinout, AT27C010L-45PI application, or AT27C010L-45PI equivalent, key selection criteria include verified 45 ns tACC timing, industrial-grade reliability (2000V ESD, 200 mA latchup immunity), Rapid™ programming (100 µs/byte), and JEDEC-standard 32-lead PDIP package compatibility.
Technical Context
The AT27C010L-45PI implements a CMOS OTP EPROM architecture with dual-line control (CE and OE) to prevent bus contention in shared-memory systems. Its address decoding supports full 17-bit addressing (A0–A16) for 128K-byte capacity, and output drivers are both CMOS- and TTL-compatible.
Programming requires VPP = 13.0 V ±0.25 V and VCC = 6.5 V ±0.25 V during pulse application, with integrated product identification (manufacturer code 0x1E, device code 0x05) accessed via A9 high-voltage mode (11.5–12.5 V) and A0 toggling - a feature used by standard programmers for algorithm auto-selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 128K × 8 bits (1,048,576-bit OTP EPROM) |
| Read Access Time | 45 ns max - eliminates WAIT states in 5 MHz Z80/8051/68K-based systems |
| VCC Supply | 5 V ±10% - single-rail operation compatible with legacy logic families |
| Active Current | 25 mA max at 5 MHz - enables low-heat dissipation in dense PCB layouts |
| Standby Current | 100 µA max - supports battery-backed or low-power sleep modes |
| Operating Temperature | –40°C to +85°C - qualified for industrial control and factory automation |
| ESD Protection | 2000 V HBM - ensures robust handling during manual assembly and rework |
Pinout & Package
AT27C010L-45PI is supplied in a 32-lead, 0.600" wide plastic dual inline package (PDIP), JEDEC MS-001 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; fully decoded to select one of 128K bytes |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus outputs; CMOS/TTL-compatible voltage levels |
| CE | Chip Enable | Active-low chip select; controls device activation and reduces power in standby |
| OE | Output Enable | Active-low output gate; enables data drive only when CE is also asserted |
| PGM | Program Strobe | Active-low programming pulse input; triggers 100 µs write cycle under VPP = 13 V |
| VCC | Power Supply | +5 V supply for logic and output drivers; must be applied before/with VPP |
| VPP | Programming Voltage | +13 V programming supply; isolated from VCC during read mode |
| GND | Ground Reference | Signal and power return; decoupling capacitor (0.1 µF ceramic) required per device |
| NC | No Connect | Pin 28 (PDIP); electrically isolated - must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical - reduces firmware update time by >5× vs. legacy EPROMs |
| Integrated Product ID Code | Manufacturer ID 0x1E + Device ID 0x05 - enables automatic algorithm selection in universal programmers |
| Two-Line Control (CE/OE) | Independent chip and output enable - prevents bus contention in multi-device memory maps |
| High-Reliability Process | 200 mA latchup immunity + 2000 V HBM ESD - meets industrial board-level stress requirements |
| JEDEC Standard Packages | PDIP (32P6), PLCC (32J), TSOP (32T) - supports drop-in replacement across form factors |
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 environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to CPU address space; accessed at 5 MHz with zero wait states. Use Value: 45 ns tACC ensures deterministic instruction fetch timing; industrial temp rating (-40°C to +85°C) guarantees uptime in unconditioned control cabinets. |
Use Scenario: Providing immutable startup code for 8051- or Z80-based instrumentation where flash reprogramming is unavailable or unsafe. IC Role / Device Role / Timing Role: Read-only memory executing reset vector fetch and hardware initialization sequence. Use Value: Single 5 V supply simplifies power design; 25 mA active current avoids thermal derating in compact enclosures. |
| Automated Test Equipment (ATE) Calibration Data | Medical Device Safety-Critical Parameter Tables |
Use Scenario: Holding factory-calibrated ADC/DAC trim coefficients and sensor linearization tables in benchtop test systems. IC Role / Device Role / Timing Role: Static lookup table accessed on-demand during measurement cycles; no write operations after initial programming. Use Value: OTP architecture prevents accidental overwrite; 2000 V ESD protection withstands repeated probe contact during calibration lab use. |
Use Scenario: Storing FDA-mandated safety thresholds and alarm limits in Class II medical devices requiring immutable runtime parameters. IC Role / Device Role / Timing Role: Secure, nonvolatile parameter store accessed during power-up self-test and real-time monitoring. Use Value: One-time programmability satisfies regulatory traceability requirements; latchup immunity (200 mA) ensures fault tolerance in safety-critical signal paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-45PI | Higher active current (35 mA vs. 25 mA); same 45 ns speed and PDIP package | Suitable where system power budget allows higher active draw but identical timing and footprint | Select when legacy designs specify AT27C010 and industrial temp is required |
| AM27C010-45DC | AMD-manufactured 128K×8 OTP EPROM; 45 ns access, 32-pin PDIP, 5 V supply | Functionally equivalent but lacks Integrated Product ID and Rapid™ programming support | Choose for cost-sensitive industrial replacements where programmer compatibility with Atmel ID codes is not required |
Compared with AT27C010-45PI and AM27C010-45DC, the AT27C010L-45PI provides lower active power (25 mA), retains full Rapid™ programming and ID code functionality, and maintains pin-for-pin compatibility - making it optimal for thermally constrained or programmer-automated production lines.
Availability
AT27C010L-45PI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot ROM, and automated test equipment calibration data requiring stable component supply across extended lifecycle programs.
Supply support for AT27C010L-45PI 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 for reliable, low-power firmware and configuration storage in industrial, automotive, and legacy computing systems where OTP permanence and JEDEC package compatibility are essential.
FAQ
What is the maximum operating frequency supported by AT27C010L-45PI?
The AT27C010L-45PI does not operate at a clock frequency itself but supports system bus frequencies up to 5 MHz due to its 45 ns read access time (tACC). At this rate, the device delivers valid data within one full bus cycle without wait states, making it suitable for Z80, 8051, and 68K-based designs running at 5 MHz.
Does AT27C010L-45PI require a separate programming voltage during normal operation?
No. AT27C010L-45PI operates from a single 5 V ±10% supply during read mode. VPP = 13 V is required only during programming - it must be disconnected or floated during normal read operation. The datasheet specifies that VPP may be tied to VCC only if programming is never performed in-system.
Can AT27C010L-45PI be used as a direct replacement for AT27C010-45PI?
Yes - AT27C010L-45PI is pin-compatible and functionally identical to AT27C010-45PI in read mode, differing only in reduced active current (25 mA vs. 35 mA) and identical 45 ns access time. Both share the same PDIP package, pinout, timing, and programming algorithm, allowing drop-in substitution where lower power consumption is beneficial.
What decoupling capacitors are required for stable operation of AT27C010L-45PI?
Each AT27C010L-45PI requires a 0.1 µF ceramic capacitor placed between VCC and GND, mounted as close as possible to the device pins. For boards with multiple EPROMs, a 4.7 µF bulk electrolytic capacitor should also be added near the main VCC entry point to suppress array-level supply ripple and transient noise.
How is the manufacturer and device identification code accessed on AT27C010L-45PI?
The AT27C010L-45PI Integrated Product Identification Code is read by asserting A9 at 11.5–12.5 V (VID), holding A1–A16 low, and toggling A0: low selects the Manufacturer ID byte (0x1E), high selects the Device ID byte (0x05). This mode is used by commercial programmers to auto-detect device type and apply correct programming algorithms.
AT27C010L-45PI 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:
- 45 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-45PI FAQ
1.How can I place an order for AT27C010L-45PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010L-45PI 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-45PI reliable?
The price and inventory of AT27C010L-45PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010L-45PI is usually 5 days.
3.What payment methods are accepted for AT27C010L-45PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010L-45PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010L-45PI?
AT27C010L-45PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010L-45PI 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-45PI?
For technical support, including AT27C010L-45PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010L-45PI requirements.
6.How does Aetrix verify that AT27C010L-45PI is sourced from the original manufacturer or authorized distributors?
All AT27C010L-45PI 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-45PI meets industry standards.
7.What is the process for return or replacement of AT27C010L-45PI?
All AT27C010L-45PI units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010L-45PI, 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-45PI part is unused and in its original packaging.
Return procedure for AT27C010L-45PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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