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Microchip Technology AT27C010L-12JC
- Part No.:
- AT27C010L-12JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27C010L-12JC.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,557
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Product details
Overview
AT27C010L-12JC from Atmel is a 128K × 8-bit one-time programmable EPROM (OTP EPROM) with 45 ns read access time, 5V ±10% supply operation, and 25 mA active current at 5 MHz. It features dual-line control (CE/OE), integrated product identification code, and JEDEC-standard 32-lead PLCC packaging. Used for firmware storage in microprocessor systems requiring fast, non-volatile code retention without wait states.
For engineers reviewing the AT27C010L-12JC datasheet, AT27C010L-12JC pinout, AT27C010L-12JC application, or AT27C010L-12JC equivalent, key selection criteria include read speed grade (-12 = 120 ns), low-power active/standby current (25 mA / 100 µA max), OTP reliability, and PLCC package compatibility with legacy socketed designs.
Technical Context
The AT27C010L-12JC implements a CMOS-based OTP EPROM architecture with address decoding for 128K × 8-bit organization (A0–A16), output drivers compatible with both TTL and CMOS logic levels, and rapid programming via 100 µs/byte PGM pulses at VPP = 13.0 V. Its two-line enable scheme (CE and OE) enables flexible bus interface timing and prevents contention in multi-device systems.
It supports three operating modes-Read, Standby, and Rapid Program-with distinct voltage and timing requirements: VPP must be applied simultaneously with or after VCC, and A9 is used for manufacturer/device identification at 12.0 V. The device includes 2000V ESD protection and 200 mA latchup immunity for industrial environment robustness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 128K × 8-bit (1,048,576 bits), enabling full firmware image storage for 8-bit/16-bit microcontrollers |
| Read Access Time | 120 ns (tACC), defining maximum clock rate compatibility with 8 MHz Z80 or 10 MHz 8086 systems |
| VCC Supply | 5V ±10%, allowing direct integration into standard 5V logic rails without regulation |
| Active Current | 25 mA max at 5 MHz, reducing thermal load vs. standard AT27C010 (35 mA) |
| Standby Current | 100 µA max, supporting low-power hold states in battery-backed or intermittent-operation systems |
| Programming Voltage | VPP = 13.0 V ±0.25 V, requiring dedicated high-voltage programming circuitry or compatible EPROM programmer |
| Operating Temperature | 0°C to 70°C (Commercial), validated for stable timing and data retention across ambient office/industrial enclosures |
Pinout & Package
AT27C010L-12JC is housed in a 32-lead Plastic J-Leaded Chip Carrier (PLCC), JEDEC MS-016 AE compliant, with 1.27 mm pitch, 18.5 mm × 18.3 mm body size, and pin 1 index mark. The package supports socketed prototyping and rework-friendly hand-soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus accepting 0x00000–0x1FFFF range; A16 selects upper half of 128K space |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus (output-only during read); TTL/CMOS-compatible drive strength |
| CE | Chip Enable | Active-low global chip select; controls device activation and standby entry when high |
| OE | Output Enable | Active-low output gate; allows shared bus operation without tristate conflicts |
| PGM | Program Strobe | Active-low pulse input triggering byte programming at VPP = 13 V; 100 µs width required |
| VCC | Power Supply | +5V ±10% main supply; must be applied before/with VPP and removed after VPP |
| VPP | Programming Voltage | +13.0 V ±0.25 V programming supply; isolated from VCC except during programming |
| GND | Ground Reference | Signal and power return; requires local 0.1 µF ceramic decoupling per device |
| NC | No Connect | Pin 14 (PLCC top view) is unconnected; must remain floating, not tied to VCC/GND |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify/reprogram loop, reducing production burn-in cycle by >60% vs. legacy EPROMs |
| Integrated Product Identification Code | Two-byte electronic ID (0x1E manufacturer, 0x05 device) readable via A9=12V/A0 toggle, enabling automatic algorithm selection in programmers |
| JEDEC Standard Packages | 32-lead PLCC (32J) footprint ensures drop-in replacement for existing AT27C010L-xxJC sockets and PCB layouts |
| High Reliability CMOS Process | 2000V HBM ESD rating and 200 mA latchup immunity support operation in noisy industrial control cabinets without external protection |
| Two-Line Control Interface | Independent CE and OE inputs allow precise timing control-OE can be delayed up to tCE − tOE without affecting CE access delay |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded System Boot ROM |
|---|---|
Use Scenario: Storing ladder logic interpreter and I/O configuration tables in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Non-volatile boot memory mapped to CPU address space; accessed during cold start and firmware updates. Use Value: 120 ns access time eliminates wait states on 80C188EB-based controllers; 25 mA active current reduces heatsink requirements in sealed enclosures. | Use Scenario: Providing fixed BIOS and peripheral initialization code for 1990s-era single-board computers using 80286/80386 processors. IC Role / Device Role / Timing Role: Primary read-only instruction store; decoded via A16 and gated by CE/OE for memory-mapped I/O regions. Use Value: PLCC package enables field-replaceable firmware upgrades; OTP security prevents unauthorized code modification in deployed equipment. |
| Military Communication Equipment Bootloader | Automotive Engine Control Module Calibration Data |
Use Scenario: Holding secure bootloader and cryptographic key tables in tactical radios operating across -40°C to +85°C temperature ranges. IC Role / Device Role / Timing Role: Trusted execution root memory; verified at power-on reset before loading encrypted application firmware. Use Value: Industrial-grade temperature rating and 2000V ESD protection ensure reliable operation in EMI-heavy vehicle-mounted environments. | Use Scenario: Storing engine calibration maps (fuel timing, spark advance) in pre-OBD-II automotive ECUs where flash memory was cost-prohibitive. IC Role / Device Role / Timing Role: Read-only lookup table memory accessed synchronously with crankshaft position sensor interrupts. Use Value: 120 ns access aligns with 8 MHz microcontroller bus cycles; OTP prevents accidental corruption during vehicle service operations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-12JC | Higher active current (35 mA vs. 25 mA); same 120 ns speed grade and PLCC package | Less suitable for thermally constrained or battery-assisted systems requiring low active power | Select only if legacy design already uses AT27C010-12JC and firmware update frequency is low |
| MX27C1000PC-12 | Same 128K×8 OTP EPROM, 120 ns speed, but 5V-only VPP (no 13V requirement); different pinout (PDIP only) | Requires PCB redesign for PLCC-to-PDIP transition; lacks integrated ID code for automated programming | Consider for new designs prioritizing simplified power supply architecture over socket compatibility |
Compared with AT27C010-12JC and MX27C1000PC-12, the AT27C010L-12JC delivers optimal balance of low active power (25 mA), industry-standard PLCC footprint, and built-in identification-making it the preferred choice for retrofitting legacy systems where thermal headroom and socket reuse are critical.
Availability
AT27C010L-12JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy embedded system boot ROM, military communication equipment bootloader, and automotive engine control module calibration data requiring stable component supply across extended lifecycle programs.
Supply support for AT27C010L-12JC 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, non-volatile memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT27C010(L) product line was designed for cost-sensitive, high-reliability firmware storage in systems where flash memory was unavailable or prohibitively expensive-targeting 1990s-era microprocessor-based control and instrumentation platforms.
FAQ
What is the maximum operating temperature range for the AT27C010L-12JC?
The AT27C010L-12JC is rated for commercial temperature operation from 0°C to 70°C. This range is explicitly confirmed in the AT27C010L Ordering Information table (page 11), where "AT27C010L-12JC" is listed under the Commercial (0°C to 70°C) column. It does not support industrial (−40°C to +85°C) or automotive (−40°C to +125°C) grades-those require suffixes like "-12JI" or "-12JA".
Does the AT27C010L-12JC require a separate programming voltage supply?
Yes, the AT27C010L-12JC requires VPP = 13.0 V ±0.25 V during programming, as specified in the DC Programming Characteristics table (page 6). This high voltage must be applied to the VPP pin while VCC is held at 6.5 V; both supplies must be sequenced-VCC applied before or simultaneously with VPP, and removed after VPP. During normal read operation, VPP may be tied to VCC.
Can the AT27C010L-12JC be used as a direct replacement for AT27C010-12JC in an existing design?
Yes, the AT27C010L-12JC is pin-compatible and functionally identical to AT27C010-12JC except for reduced active current (25 mA vs. 35 mA at 5 MHz). Both share the same 32-lead PLCC package, 120 ns speed grade, pinout, timing parameters, and programming algorithm. No PCB or firmware changes are needed-only verify that the lower power draw meets system thermal constraints.
How is the Integrated Product Identification Code accessed on the AT27C010L-12JC?
The AT27C010L-12JC's two-byte ID code (0x1E manufacturer, 0x05 device) is read by setting A9 = 12.0 V (VID), holding A1–A16 = VIL, and toggling A0 between VIL (to read manufacturer byte) and VIH (to read device byte), with CE = OE = VIL. This mode is detailed in the Operating Modes table (page 3) and Product Identification diagram (page 8).
What decoupling capacitance is required for stable operation of the AT27C010L-12JC?
The AT27C010L-12JC requires a 0.1 µF high-frequency ceramic capacitor placed between VCC and GND, located as close as possible to the device pins. For systems with multiple EPROMs, a 4.7 µF bulk electrolytic capacitor should also be added near the power entry point. These values are mandated in the "System Considerations" section (page 2) to suppress transient excursions during CE switching.
AT27C010L-12JC 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:
- 120 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)
AT27C010L-12JC FAQ
1.How can I place an order for AT27C010L-12JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010L-12JC 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-12JC reliable?
The price and inventory of AT27C010L-12JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010L-12JC is usually 5 days.
3.What payment methods are accepted for AT27C010L-12JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010L-12JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010L-12JC?
AT27C010L-12JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010L-12JC 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-12JC?
For technical support, including AT27C010L-12JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010L-12JC requirements.
6.How does Aetrix verify that AT27C010L-12JC is sourced from the original manufacturer or authorized distributors?
All AT27C010L-12JC 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-12JC meets industry standards.
7.What is the process for return or replacement of AT27C010L-12JC?
All AT27C010L-12JC units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010L-12JC, 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-12JC part is unused and in its original packaging.
Return procedure for AT27C010L-12JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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