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Microchip Technology AT27C010-12PC
- Part No.:
- AT27C010-12PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT27C010-12PC.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,434
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Product details
Overview
AT27C010-12PC 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 commercial temperature range (0°C to 70°C) in 32-lead PDIP packaging. Its dual-line control (CE/OE) prevents bus contention in embedded boot memory applications.
For engineers reviewing the AT27C010-12PC datasheet, AT27C010-12PC pinout, AT27C010-12PC application, or AT27C010-12PC equivalent, key selection criteria include verified 45 ns tACC timing, 35 mA active current at 5 MHz, JEDEC-standard PDIP-32 mechanical compatibility, and Rapid™ programming algorithm support (100 µs/byte typical).
Technical Context
The AT27C010-12PC implements a CMOS OTP EPROM architecture with address decoding for 17-bit A0–A16 inputs and 8-bit bidirectional data outputs O0–O7. It uses two independent enable controls-Chip Enable (CE) and Output Enable (OE)-to manage output driver activation and bus isolation independently.
Programming requires VPP = 12.0 V ±0.5 V applied during PGM strobe pulses, while read mode operates at VCC only (5V ±10%). The device integrates an on-chip product identification code accessible via A9 high-voltage select (11.5–12.5 V) and A0 toggling, enabling automated programmer recognition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576 bits (128K × 8), sufficient for full boot ROM or firmware image storage |
| Read Access Time | 45 ns max (tACC), eliminates WAIT states in 22 MHz Z80 or 12 MHz 8086 systems |
| VCC Supply | 5 V ±10%, compatible with standard TTL/CMOS logic rails without regulation |
| Active Current | 35 mA max at 5 MHz, defines power budget for multi-device EPROM arrays |
| Standby Current | 100 µA max (ISB1), enables low-power hold state during processor idle cycles |
| ESD Protection | 2000 V HBM, ensures robustness during manual handling and board insertion |
| Latchup Immunity | 200 mA, prevents destructive latchup under transient overvoltage conditions |
Pinout & Package
AT27C010-12PC is supplied in a 32-lead, 0.600" wide plastic dual inline package (PDIP), per JEDEC MS-011 specification. Pin 1 is marked by a notch or dot; package dimensions are 1.64" × 0.447" × 0.220" (max height).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit binary address bus; selects one of 131,072 bytes (128K) |
| O0–O7 | Data Outputs | 8-bit unidirectional data bus during read; high-impedance when OE or CE inactive |
| CE | Chip Enable | Primary chip-select; disables outputs and reduces ICC to standby level when high |
| OE | Output Enable | Secondary gate; enables output drivers only when CE is active and OE is low |
| PGM | Program Strobe | Active-low pulse input that initiates byte programming when VPP = 12 V applied |
| VPP | Programming Voltage | 12.0 V ±0.5 V input required only during programming; must be applied after VCC |
| VCC | Power Supply | +5 V ±10% main supply; powers all logic and output drivers in read mode |
| GND | Ground Reference | Signal and power return path; requires local 0.1 µF ceramic decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time enables fast firmware updates during production |
| Integrated Product ID Code | Manufacturer (0x1E) and device code (0x05) readable via A9/A0 protocol, ensuring correct algorithm selection in automated programmers |
| Two-Line Control Architecture | Independent CE and OE pins allow flexible bus arbitration and partial-memory disable in multi-chip systems |
| JEDEC-Standard Packaging | Available in PDIP-32, PLCC-32, and TSOP-32 footprints-enables drop-in replacement across form factors |
| High-Reliability Process | 2000 V ESD protection and 200 mA latchup immunity meet industrial handling and system-level surge requirements |
Applications
| Embedded Boot Memory | Firmware Storage |
|---|---|
Use Scenario: Storing BIOS or bootloader code in 8/16-bit microprocessor systems such as Intel 8086, Zilog Z80, or Motorola 68000-based designs. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped into CPU address space; accessed via parallel address/data bus with CE/OE handshaking. Use Value: 45 ns tACC allows direct execution without wait-state insertion, preserving maximum CPU throughput. | Use Scenario: Holding field-upgradable firmware images in industrial controllers where EEPROM endurance is insufficient. IC Role / Device Role / Timing Role: One-time programmable storage element; programmed once during manufacturing using industry-standard EPROM programmers. Use Value: Rapid™ algorithm (100 µs/byte) reduces programming cycle time versus legacy EPROMs, improving test-floor throughput. |
| Legacy System Replacement | Secure Configuration Storage |
Use Scenario: Replacing obsolete 27C512 or 27C020 EPROMs in maintenance-replacement scenarios where pinout and timing match. IC Role / Device Role / Timing Role: Drop-in-compatible memory component; matches JEDEC PDIP-32 footprint and 5V interface levels. Use Value: Identical 32-pin layout and TTL/CMOS I/O compatibility eliminate PCB redesign in legacy repair programs. | Use Scenario: Storing immutable hardware configuration tables (e.g., calibration constants, MAC addresses) in medical or aerospace equipment. IC Role / Device Role / Timing Role: Tamper-resistant OTP storage; contents cannot be altered post-programming, preventing unauthorized reconfiguration. Use Value: Integrated product ID code (0x1E/0x05) allows host software to verify authenticity and prevent counterfeit part integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C020-12PC | 2-Mbit (256K × 8) capacity; identical 45 ns speed grade and PDIP-32 package | Supports larger firmware images; requires wider address bus (A0–A17) | Select when >128K code space is needed and board layout accommodates extended addressing |
| MX27C1001PC-12 | 1-Mbit OTP EPROM with same 45 ns tACC and PDIP-32 package; manufactured by Macronix | Same memory map and timing; verified pinout and voltage compatibility per datasheet cross-reference | Valid second-source option with identical electrical and mechanical specifications for supply chain diversification |
Compared with AT27C010-12PC, AT27C020-12PC doubles capacity but requires A17 routing, while MX27C1001PC-12 offers identical 1-Mbit functionality and drop-in mechanical fit-making it the preferred alternative for direct replacement without design change.
Availability
AT27C010-12PC is available at Aetrix Electronics and suitable for embedded boot memory, firmware storage, and legacy system replacement requiring stable component supply and long-term obsolescence management.
Supply support for AT27C010-12PC 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 semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and secure authentication devices.
The AT27C010(L) product line was engineered for cost-effective, high-reliability OTP firmware storage in industrial and commercial microprocessor systems requiring guaranteed data retention and rapid programming.
FAQ
What is the maximum operating temperature range for AT27C010-12PC?
The AT27C010-12PC is rated for commercial operation from 0°C to 70°C. This is confirmed in the Ordering Information table on page 9 of the datasheet, where "-12PC" suffix explicitly denotes the commercial temperature grade (0°C to 70°C) in PDIP packaging. Industrial (-40°C to +85°C) and automotive (-40°C to +125°C) variants exist but carry different suffixes (e.g., -12PI, -12PA). AT27C010-12PC must not be operated outside its specified 0°C–70°C range.
Does AT27C010-12PC require a programming voltage (VPP) during normal read operation?
No, AT27C010-12PC operates from a single 5V supply (VCC) during read mode. VPP = 12.0 V ±0.5 V is required only during programming, as stated in the DC Programming Characteristics table (page 6) and Operating Modes table (page 3). Applying VPP during read may damage the device. The AT27C010-12PC datasheet specifies VPP must be applied after VCC and removed before VCC during programming sequences.
What is the purpose of the PGM pin on AT27C010-12PC?
The PGM pin on AT27C010-12PC is an active-low programming strobe used exclusively during byte programming. When pulled low with VPP = 12 V applied, it triggers the Rapid™ algorithm's 100 µs pulse to inject charge into the floating gate. It has no function during read or standby modes. The datasheet confirms PGM is ignored unless CE = VIL and VPP is present (Operating Modes table, page 3).
Can AT27C010-12PC be used as a direct replacement for AT27C010-15PC?
Yes, AT27C010-12PC can replace AT27C010-15PC in most designs because both share identical pinout, voltage requirements, and functional behavior-the only difference is access speed: AT27C010-12PC guarantees ≤120 ns tACC (45 ns grade), while AT27C010-15PC guarantees ≤150 ns. Using the faster AT27C010-12PC introduces no timing risk and may improve system performance. The datasheet lists both under the same package and temperature family (page 10).
How is the Integrated Product Identification Code accessed on AT27C010-12PC?
The Integrated Product Identification Code on AT27C010-12PC is read by setting A9 = 12.0 V (VIH = 11.5–12.5 V), holding A1–A16 = VIL, and toggling A0 between VIL (for Manufacturer ID = 0x1E) and VIH (for Device Code = 0x05), with CE = OE = VIL. This is documented in Note 4 (page 3) and the Product Identification Code table (page 8). The code is electrically read-not laser-marked-and requires high-voltage A9 drive capability from the programmer.
AT27C010-12PC 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
AT27C010-12PC FAQ
1.How can I place an order for AT27C010-12PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-12PC 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 AT27C010-12PC reliable?
The price and inventory of AT27C010-12PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-12PC is usually 5 days.
3.What payment methods are accepted for AT27C010-12PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-12PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-12PC?
AT27C010-12PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-12PC 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 AT27C010-12PC?
For technical support, including AT27C010-12PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-12PC requirements.
6.How does Aetrix verify that AT27C010-12PC is sourced from the original manufacturer or authorized distributors?
All AT27C010-12PC 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 AT27C010-12PC meets industry standards.
7.What is the process for return or replacement of AT27C010-12PC?
All AT27C010-12PC units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-12PC, 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 AT27C010-12PC part is unused and in its original packaging.
Return procedure for AT27C010-12PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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