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Microchip Technology AT27C010-45JC
- Part No.:
- AT27C010-45JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27C010-45JC.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,629
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Product details
Overview
AT27C010-45JC from Atmel is a 128K × 8-bit one-time programmable EPROM (OTP EPROM) with 45 ns read access time, 5V ±10% supply operation, and JEDEC-standard 32-lead PLCC packaging. It delivers high-speed firmware storage for microprocessor systems without wait states and supports commercial temperature range (0°C to 70°C).
For engineers reviewing the AT27C010-45JC datasheet, AT27C010-45JC pinout, AT27C010-45JC application, or AT27C010-45JC equivalent, key selection factors include verified 45 ns tACC timing, 35 mA active current at 5 MHz, VPP = 12.0 V programming voltage, CMOS/TTL I/O compatibility, and integrated product identification code for automated programming.
Technical Context
The AT27C010-45JC implements a parallel-addressed OTP EPROM architecture with dual-line control (CE and OE) enabling bus contention prevention in multi-device systems. Its Rapid™ programming algorithm uses 100 µs/byte pulses at VPP = 12.0 V and VCC = 6.5 V, followed by verify-reprogram loops per byte.
It features electrically identifiable manufacturer and device codes via A9/VH and A0 toggling, 2000V ESD protection, and 200 mA latchup immunity. The device operates exclusively in 5V read mode and requires external decoupling: 0.1 µF ceramic capacitor near VCC/GND plus 4.7 µF bulk capacitor for EPROM arrays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 128K × 8-bit (1,048,576 bits), organized for byte-wide parallel access in microprocessor data buses |
| Read Access Time | 45 ns max (tACC), enabling direct interface with 22 MHz CPU buses without WAIT insertion |
| VCC Supply | 5V ±10%, single-supply operation-no auxiliary voltages needed during read mode |
| Active Current | 35 mA max at 5 MHz, defining power budget for embedded systems with multiple EPROMs |
| Standby Current | 100 µA max (ISB1), supporting low-power hold states in battery-backed or intermittent-use designs |
| Programming Voltage | VPP = 12.0 V ±0.5 V, required only during programming-not present in normal system operation |
| Operating Temperature | 0°C to 70°C (Commercial), validated for office, lab, and non-harsh industrial environments |
Pinout & Package
AT27C010-45JC 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 and corner chamfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus accepting full 128K memory map; TTL/CMOS compatible thresholds |
| O0–O7 | Data Outputs | Tri-state CMOS outputs with VOH ≥2.4 V @ -400 µA, VOL ≤0.4 V @ 2.1 mA |
| CE | Chip Enable | Active-low chip select; controls device activation and standby entry-critical for memory banking |
| OE | Output Enable | Active-low output gate; enables data bus drive independently of CE for shared-bus arbitration |
| PGM | Program Strobe | Active-low pulse input triggering 100 µs programming cycle when VPP = 12 V is applied |
| VCC | Power Supply | +5 V supply pin; must be applied simultaneously with or before VPP during programming |
| VPP | Programming Voltage | +12 V programming supply pin; disconnected or tied to VCC during read mode |
| GND | Ground Reference | Signal and power return; requires dedicated 0.1 µF ceramic decoupling placed within 5 mm |
| NC | No Connect | Pin 14 in PLCC package-unbonded, must remain unconnected per design |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with built-in verify-reprogram loop up to 10 pulses per byte |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device Code (0x05) readable via A9/VH + A0 toggle-enables auto-algorithm selection in programmers |
| Two-Line Control Architecture | Independent CE and OE inputs allow flexible bus arbitration and eliminate need for external bus transceivers |
| High-Reliability Process | 2000V HBM ESD rating and 200 mA latchup immunity ensure robustness in manual handling and noisy industrial environments |
| JEDEC Standard Packaging | 32J PLCC footprint ensures drop-in compatibility with legacy EPROM sockets and rework-friendly surface-mount assembly |
Applications
| Firmware Boot Storage | Industrial PLC Configuration Memory |
|---|---|
Use Scenario: Storing boot code for 8/16-bit microcontrollers (e.g., Intel 8051, Motorola 68HC11) in embedded controllers where firmware must persist across power cycles. IC Role / Device Role / Timing Role: Non-volatile program memory mapped into CPU address space; provides deterministic 45 ns instruction fetch latency. Use Value: Eliminates WAIT states on 22 MHz buses, reducing boot time by up to 30% versus slower 70 ns EPROMs in same footprint. | Use Scenario: Holding configuration tables and ladder logic parameters in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Static configuration store accessed during startup and diagnostics; CE-controlled enable allows isolation during runtime updates. Use Value: 100 µA standby current extends backup battery life beyond 5 years in maintenance-free PLC deployments. |
| Legacy System ROM Replacement | Test Equipment Firmware Repository |
Use Scenario: Direct replacement for obsolete 27C512 or 27C1024 EPROMs in aging test fixtures and medical devices requiring long-term component continuity. IC Role / Device Role / Timing Role: Pin-compatible upgrade path using same PLCC socket; retains identical address/data bus loading characteristics. Use Value: Maintains original timing margins while adding Rapid™ programming for faster firmware revision turnaround in calibration labs. | Use Scenario: Hosting firmware images and calibration constants in automated test equipment (ATE) platforms where field-upgradable binaries are loaded via JTAG or serial interface. IC Role / Device Role / Timing Role: Read-only firmware repository accessed by host controller during self-test sequences; OE-gated outputs prevent bus conflicts during concurrent communication. Use Value: Integrated ID code enables automatic firmware version verification during power-on self-test, reducing misload incidents by >99%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-45PC | Same die, 32P6 PDIP package (0.600" wide); no lead-forming or thermal profile changes required | Preferred for through-hole prototyping, manual rework, or legacy board repair where PLCC reflow is unavailable | Select when socket compatibility with DIP-32 test fixtures or hand-soldered development boards is mandatory |
| AT27C010-45TC | Same die, 32T TSOP package; 11.8 × 10.0 mm body vs. PLCC's 18.5 × 18.5 mm; thinner profile (1.2 mm) | Suitable for space-constrained portable instruments and stacked PCB assemblies where height is limited | Select when board area or Z-height constraints prohibit PLCC, and reflow soldering capability exists |
Compared with AT27C010-45PC and AT27C010-45TC, the AT27C010-45JC offers superior thermal dissipation in PLCC form, mechanical stability under vibration, and compatibility with standard EPROM programmers featuring PLCC ZIF sockets-making it optimal for production programming and high-reliability industrial use.
Availability
AT27C010-45JC is available at Aetrix Electronics and suitable for firmware boot storage, industrial PLC configuration memory, and legacy system ROM replacement requiring stable component supply across extended product lifecycles.
Supply support for AT27C010-45JC 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.
The AT27C010 series was designed as a high-reliability, fast-access OTP EPROM family targeting industrial control, instrumentation, and embedded firmware storage where EEPROM endurance or Flash write complexity is unnecessary.
FAQ
What is the maximum operating frequency supported by the AT27C010-45JC?
The AT27C010-45JC does not operate at a clock frequency-it is an asynchronous memory device. Its 45 ns access time (tACC) supports reliable interfacing with microprocessors running up to approximately 22 MHz (1/45 ns ≈ 22.2 MHz), assuming zero WAIT state insertion. System timing must account for address setup/hold and CE/OE propagation delays per the AC characteristics table in the datasheet. The AT27C010-45JC itself imposes no internal clock requirement.
Can the AT27C010-45JC be programmed in-circuit?
No, the AT27C010-45JC cannot be reliably programmed in-circuit. Programming requires VPP = 12.0 V ±0.5 V applied to pin 18, which is incompatible with standard 5 V system rails and risks damaging neighboring components. It must be programmed in a dedicated EPROM programmer with ZIF socket support for PLCC-32 packages. The AT27C010-45JC datasheet explicitly specifies off-board programming with controlled VPP ramping and decoupling.
Does the AT27C010-45JC require external pull-up resistors on its output pins?
No, the AT27C010-45JC does not require external pull-up resistors on O0–O7. Its CMOS-compatible outputs actively drive high (VOH ≥2.4 V) and low (VOL ≤0.4 V) with specified current drive capability (IOH = -400 µA, IOL = 2.1 mA). Pull-ups would increase standby current and risk bus contention during OE/CE transitions. External termination is only needed if interfacing with open-drain buses-a configuration not supported by the AT27C010-45JC's output structure.
What is the purpose of the NC pin on the AT27C010-45JC PLCC package?
The NC (No Connect) pin on the AT27C010-45JC PLCC package is pin 14, which is internally unbonded and electrically isolated. It must remain unconnected in PCB layout and schematic-neither tied to VCC, GND, nor left floating with capacitive coupling. This pin exists solely for mechanical symmetry and JEDEC package compliance; connecting it risks introducing noise coupling or violating absolute maximum ratings per the AT27C010-45JC datasheet.
How does the Integrated Product Identification Code function on the AT27C010-45JC?
The AT27C010-45JC's Integrated Product Identification Code provides two read-only bytes: Manufacturer ID (0x1E) and Device Code (0x05). To read them, hold all address lines A1–A16 low, apply VH = 12.0 V to A9, and toggle A0 between VIL and VIH while keeping CE and OE low. This feature enables intelligent programmers to auto-detect the AT27C010-45JC and select correct algorithms/voltages-eliminating manual part selection errors during high-volume programming.
AT27C010-45JC 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:
- 45 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)
AT27C010-45JC FAQ
1.How can I place an order for AT27C010-45JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-45JC 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 AT27C010-45JC reliable?
The price and inventory of AT27C010-45JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-45JC is usually 5 days.
3.What payment methods are accepted for AT27C010-45JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-45JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-45JC?
AT27C010-45JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-45JC 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 AT27C010-45JC?
For technical support, including AT27C010-45JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-45JC requirements.
6.How does Aetrix verify that AT27C010-45JC is sourced from the original manufacturer or authorized distributors?
All AT27C010-45JC 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 AT27C010-45JC meets industry standards.
7.What is the process for return or replacement of AT27C010-45JC?
All AT27C010-45JC units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-45JC, 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 AT27C010-45JC part is unused and in its original packaging.
Return procedure for AT27C010-45JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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