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Microchip Technology AT27C010-55JC
- Part No.:
- AT27C010-55JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27C010-55JC.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,617
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Product details
Overview
AT27C010-55JC from Atmel is a 1-Mbit (128K × 8) one-time programmable EPROM with 55 ns read access time, 5V ±10% supply operation, and JEDEC-standard 32-lead PLCC package. 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-based systems requiring non-volatile, pin-verified boot code.
For engineers reviewing the AT27C010-55JC datasheet, AT27C010-55JC pinout, AT27C010-55JC application, or AT27C010-55JC equivalent, key selection criteria include verified 55 ns tACC timing at commercial temperature range (0°C to 70°C), PLCC package compatibility with legacy socketed designs, VPP = 12.0 V programming voltage, and 35 mA active current draw under 5 MHz bus operation.
Technical Context
The AT27C010-55JC implements a standard OTP EPROM architecture with dual-line control (CE and OE) enabling bus contention avoidance in shared-memory systems. Its address space spans A0–A16 (17-bit), supporting full 128K-byte decoding without external address latching.
It operates exclusively in 5V read mode with no auxiliary supplies required, while programming demands VPP = 12.0 ± 0.5 V applied to pin 18 and VCC raised to 6.5 V. The Rapid™ algorithm uses precise 95–105 µs PGM pulses with per-byte verify-and-reprogram loops, ensuring reliable one-time programming integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576 bits (128K × 8) - supports full firmware image storage for 8-bit microcontrollers without bank switching. |
| Read Access Time (tACC) | 55 ns max - eliminates WAIT states on 18 MHz Z80 or 12 MHz 8051 systems operating at 5 MHz bus frequency. |
| VCC Supply | 5V ±10% - compatible with standard logic rails; no separate logic or core voltage required. |
| Active Current (ICC) | 35 mA max at 5 MHz - defines thermal budget for dense EPROM arrays; requires local 0.1 µF ceramic decoupling. |
| Standby Current (ISB) | 100 µA max - enables low-power retention in battery-backed or intermittent-read applications. |
| Programming Voltage (VPP) | 12.0 ± 0.5 V - must be applied only during programming; requires dedicated high-voltage circuitry or programmer support. |
| ESD Protection | 2000V HBM - ensures robustness during manual handling and PCB assembly without special ESD controls. |
Pinout & Package
AT27C010-55JC is housed in a 32-lead Plastic J-Leaded Chip Carrier (PLCC), JEDEC MS-016 AE compliant, with 1.27 mm pitch and 11.4–11.5 mm body width. Pin 1 is marked by index notch and corner chamfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit parallel address bus; fully decoded to select one of 131,072 bytes; no address multiplexing required. |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus in read mode; high-impedance when CE or OE inactive; TTL/CMOS compatible. |
| CE | Chip Enable | Primary device select; must be low for read or program access; controls power state transition between active and standby. |
| OE | Output Enable | Secondary output gate; allows multiple devices on same data bus; float outputs when high to prevent contention. |
| PGM | Program Strobe | Active-low pulse input (95–105 µs width) that initiates byte programming when CE = low and VPP = 12 V. |
| VPP | Programming Voltage | 12.0 V input (pin 18); must be stable before PGM assertion; disconnected or tied to VCC during read mode. |
| VCC | Power Supply | +5V supply (pin 20); must be applied simultaneously with or before VPP and removed after VPP during programming. |
| GND | Ground | Signal and power reference (pin 17); requires low-inductance connection to minimize noise during fast transitions. |
| NC | No Connect | Pins 12 and 29 are unconnected; must remain floating - no pull-up/down or routing allowed. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop - reduces production programming cycle time by >5× vs. legacy EPROMs. |
| Integrated Product Identification Code | Manufacturer ID (0x1E) and Device Code (0x05) readable via A9/VH and A0 toggle - enables automatic algorithm selection in universal programmers. |
| Two-Power Version Compatibility | Shares pinout and timing with AT27C010L but draws 35 mA active current - simplifies BOM consolidation across performance tiers. |
| JEDEC Standard Packages | 32J PLCC footprint - ensures drop-in replacement for existing sockets and compatibility with legacy rework stations and test fixtures. |
| High-Reliability Process | 200 mA latchup immunity and 2000V ESD protection - meets industrial system robustness requirements without external protection components. |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded Boot ROM |
|---|---|
|
Use Scenario: Storing fixed ladder-logic interpreter and I/O mapping tables in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Non-volatile boot memory mapped to CPU address space; accessed at power-on reset with deterministic 55 ns latency. Use Value: Eliminates need for external EEPROM initialization routines; guarantees first-instruction fetch within 55 ns of address stabilization. |
Use Scenario: Providing immutable startup code for 80C51-based medical diagnostic instruments with long field service life. IC Role / Device Role / Timing Role: Primary ROM executing self-test and hardware initialization before loading dynamic configuration from flash. Use Value: Ensures firmware integrity over 10+ year deployments; OTP prevents accidental overwrite during field updates. |
| Automotive Instrument Cluster Calibration Data | Test Equipment Microcode Repository |
|
Use Scenario: Holding calibrated sensor offset tables and display gamma correction coefficients in analog-digital hybrid instrument clusters. IC Role / Device Role / Timing Role: Read-only data store accessed via 8-bit parallel bus during cluster boot sequence; no write cycles post-manufacture. Use Value: Supports automotive-grade (-40°C to +85°C) operation without refresh or wear leveling overhead. |
Use Scenario: Hosting FPGA configuration bitstreams and calibration constants in automated test equipment used in semiconductor final test. IC Role / Device Role / Timing Role: Static memory holding golden reference patterns and measurement algorithms executed directly by embedded controller. Use Value: Enables deterministic 55 ns read response critical for sub-microsecond timing margins in high-speed digital pattern generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-55PC | Same die, 32P6 PDIP package (0.600" width); 55 ns tACC, 35 mA ICC, identical programming specs. | Through-hole mounting; suited for prototyping, repair, or legacy wave-soldered boards where PLCC rework is impractical. | Select AT27C010-55PC when board layout uses DIP sockets or requires manual soldering compatibility. |
| AT27C010-55TC | Same die, 32T TSOP package; identical speed grade and electrical specs but thinner profile (1.2 mm max height). | Surface-mount design for space-constrained applications; requires fine-pitch reflow process; no socket support. | Choose AT27C010-55TC for high-density PCBs where component height is constrained and reflow capability exists. |
Compared with AT27C010-55PC and AT27C010-55TC, the AT27C010-55JC offers the same 55 ns timing and OTP functionality in a surface-mount PLCC package optimized for socketed industrial upgrades and rework-friendly layouts - balancing mechanical robustness, thermal dissipation, and legacy compatibility better than PDIP or TSOP variants.
Availability
AT27C010-55JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy embedded boot ROM, and automotive instrument cluster calibration data requiring stable component supply across extended lifecycle programs.
Supply support for AT27C010-55JC 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, non-volatile memory, and secure authentication ICs.
The AT27C010(L) series was designed as a high-reliability, industry-standard OTP EPROM family targeting firmware storage in industrial, automotive, and embedded systems where data immutability and long-term bit retention are mandatory.
FAQ
What is the maximum operating temperature range for the AT27C010-55JC?
The AT27C010-55JC is rated for commercial temperature operation from 0°C to +70°C. This is confirmed in the Ordering Information table (page 9), where "-55JC" suffix explicitly denotes the commercial grade with 55 ns speed and PLCC packaging. Industrial and automotive variants use suffixes "-55JI" and "-55JA", respectively.
Does the AT27C010-55JC require a programming voltage during normal read operation?
No, the AT27C010-55JC operates from a single 5V ±10% supply during read mode. VPP (12.0 V) is required only during programming and must be disconnected or tied to VCC in read mode. The datasheet specifies VPP = X (don't care) in all read-mode timing tables and explicitly states "VPP may be connected directly to VCC, except during programming."
Can the AT27C010-55JC be used as a direct replacement for the AT27C010-45JC?
The AT27C010-55JC is pin-compatible and functionally identical to the AT27C010-45JC except for access time: 55 ns vs. 45 ns. Both share the same PLCC package, programming algorithm, and DC characteristics. Systems designed for 45 ns timing will operate reliably with the 55 ns part, though maximum bus frequency may decrease slightly.
What decoupling capacitance is required for stable operation of the AT27C010-55JC?
Per the System Considerations section (page 2), each AT27C010-55JC requires a 0.1 µF high-frequency ceramic capacitor placed between VCC and GND, mounted as close to the device as possible. For arrays, a 4.7 µF bulk electrolytic capacitor is also recommended near the power entry point to suppress ripple-induced transients.
How is the manufacturer and device identification code read from the AT27C010-55JC?
The AT27C010-55JC provides an Integrated Product Identification Code: Manufacturer ID = 0x1E and Device Code = 0x05. To read it, hold all address lines low except A9 (set to 12.0 V) and toggle A0 between low and high while keeping CE and OE low - the 8-bit output reflects the selected ID byte per the timing diagram on page 8.
AT27C010-55JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- 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:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT27C010-55JC FAQ
1.How can I place an order for AT27C010-55JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-55JC 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 AT27C010-55JC reliable?
The price and inventory of AT27C010-55JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-55JC is usually 5 days.
3.What payment methods are accepted for AT27C010-55JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-55JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-55JC?
AT27C010-55JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-55JC 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 AT27C010-55JC?
For technical support, including AT27C010-55JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-55JC requirements.
6.How does Aetrix verify that AT27C010-55JC is sourced from the original manufacturer or authorized distributors?
All AT27C010-55JC 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 AT27C010-55JC meets industry standards.
7.What is the process for return or replacement of AT27C010-55JC?
All AT27C010-55JC units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-55JC, 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 AT27C010-55JC part is unused and in its original packaging.
Return procedure for AT27C010-55JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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