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Microchip Technology AT27C010-55JI
- Part No.:
- AT27C010-55JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27C010-55JI.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT27C010-55JI from Atmel is a 128K × 8-bit (1 Mbit) one-time programmable EPROM designed for nonvolatile firmware storage in microprocessor systems. It delivers 55 ns read access time, operates from a single 5V ±10% supply, and supports industrial temperature range (–40°C to +85°C). Its dual-line control (CE/OE), CMOS/TTL compatibility, and Rapid™ programming (100 µs/byte) enable direct integration into embedded boot memory and configuration storage applications.
For engineers reviewing the AT27C010-55JI datasheet, AT27C010-55JI pinout, AT27C010-55JI application, or AT27C010-55JI equivalent, key selection criteria include verified 55 ns tACC timing, industrial-grade standby current (≤100 µA), PLCC-32 package mapping, OTP reliability for fixed firmware, and compatibility with standard EPROM programmers using VPP = 12.0 V.
Technical Context
The AT27C010-55JI implements a parallel-addressed OTP EPROM architecture with 17 address lines (A0–A16), 8 bidirectional data outputs (O0–O7), and dedicated program strobe (PGM) and high-voltage programming supply (VPP) pins. It uses Atmel's high-reliability CMOS process with 2000V ESD protection and 200 mA latchup immunity.
Its operation relies on two independent enable controls: Chip Enable (CE) for device selection and Output Enable (OE) for output buffer gating - enabling bus contention avoidance in multi-device systems. Programming requires precise 12.0 V ±0.5 V on A9 and 13.0 V ±0.25 V on VPP, with 100 µs PGM pulses and verification loops per byte.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 128K × 8 bits (1,048,576 bits) - provides full boot code or configuration image storage without external expansion. |
| Read Access Time (tACC) | 55 ns max - eliminates WAIT states in 16–20 MHz microprocessor buses (e.g., 80C188, 68EC000). |
| VCC Supply | 5 V ±10% - compatible with standard logic rails; no auxiliary voltage required for read mode. |
| Standby Current (ISB1) | 100 µA max - enables low-power retention in battery-backed or energy-sensitive systems. |
| Active Current (ICC) | 35 mA max at 5 MHz - defines power budget for sustained read bursts in real-time firmware fetch. |
| Programming Voltage (VPP) | 13.0 V ±0.25 V - requires dedicated programmer HV supply; not derived from VCC. |
| Operating Temperature | –40°C to +85°C - qualified for industrial control, motor drives, and factory automation environments. |
Pinout & Package
AT27C010-55JI is packaged in a 32-lead Plastic J-Leaded Chip Carrier (PLCC), JEDEC MS-016 AE compliant, with 1.27 mm pitch and body size 18.5 × 18.5 mm. Pin 1 is marked by index notch; leads are gull-wing shaped for surface-mount reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus interface; latched internally on CE/OE assertion for memory location selection. |
| O0–O7 | Data Outputs | CMOS/TTL-compatible tri-state outputs; driven only when CE = OE = low; high-impedance otherwise. |
| CE | Chip Enable | Primary device select; must be low to activate internal array and enable output drivers. |
| OE | Output Enable | Secondary output gate; allows CE-controlled device selection while disabling outputs to prevent bus conflicts. |
| PGM | Program Strobe | Active-low pulse input (100 µs width) that initiates byte programming when VPP is applied. |
| VPP | Programming Voltage | 13.0 V input during programming; must be stable before PGM assertion and removed after completion. |
| VCC | Power Supply | 5 V supply for logic and memory array; powers all internal circuitry in read/standby modes. |
| GND | Ground | Reference return path for VCC and VPP; requires local 0.1 µF ceramic decoupling per device. |
| NC | No Connect | Unbonded pin (position 14 in PLCC); must remain unconnected to avoid parasitic coupling. |
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 - ensures correct algorithm selection in automated programmers. |
| Two-Line Control Architecture | Independent CE and OE inputs - enables flexible memory mapping and eliminates need for external bus transceivers in shared-data-bus systems. |
| High-Reliability CMOS Process | 2000 V HBM ESD rating and 200 mA latchup immunity - sustains robust operation in noisy industrial PCB environments. |
| JEDEC-Standard Packages | PLCC-32 footprint (32J) - supports drop-in replacement across Atmel's AT27C010 family and legacy 27C010 designs. |
Applications
| Industrial PLC Firmware Storage | Legacy Microcontroller Boot ROM |
|---|---|
Use Scenario: Storing fixed ladder logic and I/O mapping firmware in programmable logic controllers deployed in factory-floor cabinets. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing immediate instruction fetch at power-on; accessed via 16-bit address/data bus of 80C186 derivative CPU. Use Value: 55 ns tACC ensures zero-wait-state execution of initialization routines; industrial temp rating guarantees uptime in unconditioned control panels. |
Use Scenario: Holding immutable BIOS and peripheral initialization code in retro-computing or medical instrument microcontrollers (e.g., Z80, 8085-based systems). IC Role / Device Role / Timing Role: Primary ROM mapped to upper memory space (0xC000–0xFFFF); selected by address decoder and enabled via CE/OE handshake. Use Value: OTP permanence prevents accidental overwrite; CMOS/TTL compatibility eliminates level-shifter requirements in mixed-logic designs. |
| Automated Test Equipment Configuration | Embedded Communication Module Code Storage |
Use Scenario: Storing calibration tables, test sequence definitions, and hardware abstraction layer (HAL) code in benchtop ATE mainframes. IC Role / Device Role / Timing Role: Static configuration memory accessed during self-test startup; isolated from volatile RAM by separate address decode. Use Value: 100 µA max standby current minimizes quiescent draw during idle periods; PLCC-32 package allows manual rework if field updates are needed. |
Use Scenario: Hosting protocol stack firmware (e.g., Modbus RTU, CANopen bootloader) in DIN-rail-mounted gateway modules operating in harsh electrical environments. IC Role / Device Role / Timing Role: Read-only instruction store interfaced to ARM7TDMI or similar MCU via parallel bus; VPP pin unused in final product. Use Value: 2000 V ESD protection withstands repeated hot-plug events; industrial temperature range supports deployment in outdoor telecom cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C010-55DC | 55 ns tACC, 35 mA ICC, same PLCC-32 package; requires VPP = 12.5 V (±0.25 V) vs. AT27C010-55JI's 13.0 V. | Valid for same industrial firmware storage use cases but demands adjusted programmer VPP calibration. | Select when sourcing from AMD/Spansion legacy supply chains; verify VPP tolerance margin in existing programming fixtures. |
| MX27C010PC-55 | 55 ns tACC, 30 mA ICC, PDIP-32 only (no PLCC option); lacks integrated product ID code and Rapid™ algorithm support. | Suitable for cost-sensitive, through-hole-only designs where programming throughput is secondary to board assembly simplicity. | Choose only for new PDIP-based designs lacking PLCC reflow capability; expect longer programming cycles and manual ID verification. |
Compared with AM27C010-55DC and MX27C010PC-55, the AT27C010-55JI offers guaranteed Rapid™ programming, built-in ID code for automated tooling, and PLCC-32 packaging - making it optimal for high-mix industrial manufacturing where programming repeatability and package flexibility are critical.
Availability
AT27C010-55JI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot ROM, and embedded communication module code storage requiring stable component supply across extended product lifecycles.
Supply support for AT27C010-55JI 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.
The AT27C010 series was developed to deliver high-reliability, low-power OTP EPROMs for firmware storage in industrial, automotive, and communications equipment where data integrity and long-term bit retention are mandatory.
FAQ
What is the maximum allowed VPP voltage for programming the AT27C010-55JI?
The AT27C010-55JI requires VPP = 13.0 V ± 0.25 V during programming, as specified in its DC Programming Characteristics table. Exceeding 13.25 V risks oxide damage and latent failure; operating below 12.75 V may cause incomplete programming. The AT27C010-55JI must never be subjected to VPP > 14.0 V, as that exceeds absolute maximum rating and can permanently destroy the device.
Does the AT27C010-55JI support read operations at 3.3 V?
No, the AT27C010-55JI does not support 3.3 V operation. Its VCC specification is strictly 5 V ± 10% (4.5 V to 5.5 V), and all DC/AC parameters - including VIH, VOL, and tACC - are characterized only within this range. Attempting 3.3 V read operation will result in undefined outputs, timing violations, and potential bus contention due to insufficient noise margins.
Can the AT27C010-55JI be used as a direct replacement for the AT27C010-55JC in a commercial-temperature design?
Yes, the AT27C010-55JI is pin-compatible and functionally identical to the AT27C010-55JC except for its extended industrial temperature range (–40°C to +85°C vs. 0°C to +70°C). All timing, electrical, and programming specifications match exactly. The AT27C010-55JI may be substituted without PCB changes, provided system thermal design accommodates the wider operating envelope.
How is the Integrated Product Identification Code read from the AT27C010-55JI?
The AT27C010-55JI identification code is read by asserting CE = OE = VIL, setting A9 = 12.0 V (VH), holding A1–A16 = VIL, and toggling A0 between VIL (to read Manufacturer ID 0x1E) and VIH (to read Device Code 0x05). Outputs O0–O7 reflect the 8-bit code. This sequence must occur with VPP = VCC = 5 V; no programming voltage is required for ID read.
What decoupling capacitance is required for stable AT27C010-55JI operation?
Each AT27C010-55JI requires a 0.1 µF high-frequency ceramic capacitor placed between VCC and GND, mounted as close as possible to the device pins. For boards with multiple AT27C010-55JI devices, a 4.7 µF bulk electrolytic capacitor must also be connected between VCC and GND near the power entry point to suppress array-level supply droop during simultaneous output transitions.
AT27C010-55JI 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:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT27C010-55JI FAQ
1.How can I place an order for AT27C010-55JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-55JI 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 AT27C010-55JI reliable?
The price and inventory of AT27C010-55JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-55JI is usually 5 days.
3.What payment methods are accepted for AT27C010-55JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-55JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-55JI?
AT27C010-55JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-55JI 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 AT27C010-55JI?
For technical support, including AT27C010-55JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-55JI requirements.
6.How does Aetrix verify that AT27C010-55JI is sourced from the original manufacturer or authorized distributors?
All AT27C010-55JI 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 AT27C010-55JI meets industry standards.
7.What is the process for return or replacement of AT27C010-55JI?
All AT27C010-55JI units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-55JI, 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 AT27C010-55JI part is unused and in its original packaging.
Return procedure for AT27C010-55JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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