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Microchip Technology AT27C010-45PC
- Part No.:
- AT27C010-45PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT27C010-45PC.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,565
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Product details
Overview
AT27C010-45PC from Atmel is a 1-Mbit (128K × 8) one-time programmable EPROM with 45 ns read access time, 5V ±10% supply operation, and JEDEC-standard 32-lead PDIP packaging. It delivers TTL/CMOS-compatible I/O, rapid 100 µs/byte programming, and integrated product identification for automated programming systems - deployed in firmware storage for industrial microcontroller boot loaders.
For engineers reviewing the AT27C010-45PC datasheet, AT27C010-45PC pinout, AT27C010-45PC application, or AT27C010-45PC equivalent, key selection criteria include verified 45 ns tACC timing, VPP = 12.0 V programming voltage, standby current ≤100 µA, and compatibility with standard EPROM programmers supporting Rapid™ algorithm and A9-based ID code readout.
Technical Context
The AT27C010-45PC implements a parallel-addressed OTP EPROM architecture with dual-line control (CE/OE) enabling bus contention avoidance in shared-memory systems. Its internal array is organized as 128K words × 8 bits, accessed via 17 address lines (A0–A16) and 8 bidirectional data outputs (O0–O7).
Programming relies on external VPP = 12.0 V applied to pin 18, with PGM strobe triggering 100 µs pulses under Rapid™ algorithm; product identification uses A9 high-voltage (11.5–12.5 V) and A0 toggling to select manufacturer/device code bytes - both functions validated in read and program modes per AC/DC specs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576-bit (128K × 8) OTP EPROM - supports full firmware image storage without refresh or write cycles. |
| Read Access Time | 45 ns max (tACC) - eliminates WAIT states in 5 MHz Z80, 80C51, and 68K-based systems. |
| VCC Supply | 5V ±10% - single-rail operation compatible with legacy 5V logic families and power supplies. |
| Standby Current | 100 µA max (ISB1) - enables low-power hold mode during processor sleep or system idle. |
| Active Current | 35 mA max at 5 MHz (ICC) - defines thermal and PSU sizing requirements for sustained read bursts. |
| VPP Programming Voltage | 12.0 V ±0.5 V (VID) - required on pin 18 during programming; must be applied after VCC and removed before VCC. |
| ESD Protection | 2000 V HBM - ensures robustness during handling and board assembly in non-EPA environments. |
Pinout & Package
AT27C010-45PC is supplied in a 32-lead, 0.600" wide plastic dual inline package (PDIP), JEDEC MS-001 compliant, with 0.100" lead pitch and through-hole mounting. Pin 1 is marked by notch or dot; package height ≤0.220", width 0.630", length 1.670".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus interface; A0 = LSB, A16 = MSB - selects one of 131,072 bytes. |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus; outputs valid only when CE = OE = VIL and PGM = X. |
| CE | Chip Enable | Primary device select; active-low - disables outputs and reduces current to ISB1/ISB2 when high. |
| OE | Output Enable | Secondary output gate; active-low - allows multiple devices on same data bus with staggered OE timing. |
| PGM | Program Strobe | Active-low pulse input; initiates byte programming when VPP = 12 V and address stable. |
| VPP | Programming Voltage | 12.0 V input pin (pin 18); must be externally supplied during programming - not used in read mode. |
| VCC | Power Supply | +5 V supply (pin 28); powers logic and memory array - requires 0.1 µF ceramic decoupling adjacent to pin. |
| GND | Ground | Reference return (pin 16); must be low-inductance connection to minimize noise coupling into array. |
| NC | No Connect | Pin 24 (PDIP) - internally unconnected; must remain floating or tied to GND per layout best practice. |
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 Identification Code | Manufacturer ID (0x1E) and Device ID (0x05) readable via A9 high-voltage and A0 toggle - enables auto-algorithm selection in gang programmers. |
| Two Power Versions Supported | Differentiates AT27C010 (35 mA active) and AT27C010L (25 mA active); AT27C010-45PC matches the higher-current variant for performance-critical systems. |
| JEDEC-Standard Packaging Options | Same pinout across PDIP (32P6), PLCC (32J), and TSOP (32T) - allows footprint reuse across form factors without redesign. |
| High-Reliability Process | 200 mA latchup immunity and 2000 V HBM ESD rating - qualifies for industrial control and automotive body electronics applications. |
Applications
| Industrial PLC Firmware Storage | Legacy Microcontroller Boot ROM |
|---|---|
|
Use Scenario: Stores fixed ladder logic and I/O mapping firmware in programmable logic controllers operating continuously in factory environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to CPU address space; accessed at power-on reset with no initialization delay. Use Value: 45 ns tACC ensures deterministic boot timing; 100 µA standby current minimizes thermal load in sealed enclosures. |
Use Scenario: Provides immutable startup code for 8-bit microcontrollers (e.g., 8051, Z8) in medical instrumentation and test equipment. IC Role / Device Role / Timing Role: Read-only instruction memory executing directly from address 0x0000; CE/OE controlled by address decoder. Use Value: CMOS/TTL compatibility guarantees signal integrity with mixed-logic designs; VPP isolation prevents accidental reprogramming in field units. |
| Automotive Body Control Module | Embedded System Configuration Memory |
|
Use Scenario: Holds calibration tables and CAN node configuration data in automotive BCMs rated for -40°C to +125°C operation. IC Role / Device Role / Timing Role: Static configuration store accessed during MCU initialization; not modified post-deployment. Use Value: Automotive temperature range support (-40°C to +125°C) and 200 mA latchup immunity meet AEC-Q100 stress requirements. |
Use Scenario: Retains hardware-specific settings (e.g., display resolution, sensor gain) in networked industrial gateways with no battery backup. IC Role / Device Role / Timing Role: Parallel-configured configuration ROM; read once at boot and cached in RAM for runtime use. Use Value: 128K × 8 capacity accommodates multi-language UI strings and vendor-specific feature flags without external flash. |
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 tACC, same 128K×8 organization, but AMD-manufactured with 13 V VPP requirement and different ID code format. | Requires updated programmer firmware for ID verification and voltage sequencing; not drop-in in Rapid™-optimized toolchains. | Select when sourcing constraints require AMD-supplied parts or existing AM27C010 infrastructure is in place. |
| MX27C1000PC-45 | 45 ns tACC, identical pinout and VCC/VPP specs, but Macronix uses 12.5 V VPP and has distinct AC timing margins on tDF and tOH. | Valid for read-mode replacement; programming validation required due to differing PGM pulse tolerance (±5% vs. ±10%). | Choose for cost-sensitive industrial builds where second-source qualification is mandated and programming equipment supports dual algorithms. |
Compared with AM27C010-45DC and MX27C1000PC-45, the AT27C010-45PC offers tighter tOH specification (7 ns), guaranteed Rapid™ algorithm support, and native integration with Atmel's ID code protocol - making it preferred for new designs requiring fast, reliable, and toolchain-verified OTP programming.
Availability
AT27C010-45PC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot ROM, and automotive body control module applications requiring stable component supply over extended production lifecycles.
Supply support for AT27C010-45PC 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, nonvolatile memory, and secure authentication ICs for industrial, automotive, and consumer markets.
The AT27C010(L) series was designed as a high-reliability, pin-compatible upgrade path for 27C64/27C256 EPROMs, targeting firmware storage in resource-constrained embedded systems where endurance and programming speed matter more than rewrite capability.
FAQ
What is the maximum allowable VPP voltage for programming the AT27C010-45PC?
The AT27C010-45PC requires VPP = 12.0 V ± 0.5 V during programming, as specified in the DC Programming Characteristics table. Exceeding 12.5 V risks oxide breakdown in the floating-gate cells, while voltages below 11.5 V may cause incomplete programming or verify failures. The AT27C010-45PC must have VPP applied after VCC and removed before VCC to prevent latchup.
Can the AT27C010-45PC be used in place of the AT27C010L-45PC?
No - the AT27C010-45PC and AT27C010L-45PC are distinct power variants. The AT27C010-45PC draws up to 35 mA active current, while the L-version draws only 25 mA. Substituting them without verifying power delivery and thermal design may cause overheating or brownout in low-power systems. The AT27C010-45PC is not a functional drop-in replacement for the L-version.
How is the Integrated Product Identification Code read from the AT27C010-45PC?
The AT27C010-45PC ID code is read by setting A9 to 12.0 V (VIH = 11.5–12.5 V), holding A1–A16 low, and toggling A0: low reads Manufacturer ID (0x1E), high reads Device ID (0x05). This occurs during normal read mode with CE = OE = VIL and VPP = VCC. The AT27C010-45PC supports this function without special programming mode entry.
Does the AT27C010-45PC support partial reprogramming?
No - the AT27C010-45PC is a one-time programmable (OTP) EPROM. Once a memory cell is programmed (charged), it cannot be erased or rewritten. All 128K bytes must be written in a single programming session using the Rapid™ algorithm; partial updates require full reprogramming of the entire device. The AT27C010-45PC has no erase window or UV erasure capability.
What decoupling capacitance is required for stable operation of the AT27C010-45PC?
The AT27C010-45PC requires a 0.1 µF high-frequency ceramic capacitor placed between VCC (pin 28) and GND (pin 16), mounted as close as possible to the device. For boards with multiple AT27C010-45PC units, a 4.7 µF bulk electrolytic capacitor must also be added near the power entry point to suppress array-level supply droop during simultaneous read accesses.
AT27C010-45PC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-PDIP
AT27C010-45PC FAQ
1.How can I place an order for AT27C010-45PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-45PC 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 AT27C010-45PC reliable?
The price and inventory of AT27C010-45PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-45PC is usually 5 days.
3.What payment methods are accepted for AT27C010-45PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-45PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-45PC?
AT27C010-45PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-45PC 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 AT27C010-45PC?
For technical support, including AT27C010-45PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-45PC requirements.
6.How does Aetrix verify that AT27C010-45PC is sourced from the original manufacturer or authorized distributors?
All AT27C010-45PC 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 AT27C010-45PC meets industry standards.
7.What is the process for return or replacement of AT27C010-45PC?
All AT27C010-45PC units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-45PC, 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 AT27C010-45PC part is unused and in its original packaging.
Return procedure for AT27C010-45PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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