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Microchip Technology AT27C010-70JC
- Part No.:
- AT27C010-70JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27C010-70JC.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,037
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Product details
Overview
AT27C010-70JC from Atmel is a 1-Mbit (128K × 8) one-time programmable EPROM with 70 ns read access time, 5V ±10% supply operation, and JEDEC-standard 32-lead PLCC packaging. It delivers TTL/CMOS-compatible I/O, rapid 100 µs/byte programming, and integrated product identification for automated programming systems - used in firmware storage for industrial microcontroller-based systems requiring non-volatile, pin-verified boot code.
For engineers reviewing the AT27C010-70JC datasheet, AT27C010-70JC pinout, AT27C010-70JC application, or AT27C010-70JC equivalent, key selection criteria include verified 70 ns tACC timing at commercial temperature range (0°C to 70°C), VPP = 13.0 V programming voltage, standby current ≤100 µA, and compatibility with standard EPROM programmers supporting Rapid™ algorithm and A9-based ID byte readout.
Technical Context
The AT27C010-70JC implements a parallel-addressed OTP EPROM architecture with dual-line control (CE and OE) enabling bus contention avoidance in multi-device systems. Its internal logic supports four distinct operating modes - Read, Standby, Rapid Program, and Product Identification - selected via specific combinations of CE, OE, PGM, and A9 voltage levels.
It uses high-reliability CMOS process with 2000V ESD protection and 200 mA latchup immunity. Programming requires VCC = 6.5 V and VPP = 13.0 V, with a 100 µs ±5% PGM pulse width; verification occurs per-byte with up to 10 reprogramming attempts before failure declaration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576-bit (128K × 8) OTP EPROM - stores full firmware images for 8-bit microcontrollers without external memory controller overhead. |
| Read Access Time (tACC) | 70 ns max - enables direct interface with 14 MHz Z80 or 12.5 MHz 8051 systems without wait states. |
| VCC Supply | 5V ±10% - compatible with standard logic rails; no auxiliary voltage regulators required in legacy designs. |
| Standby Current (ISB1) | 100 µA max - suitable for low-power industrial systems where EPROM remains powered but inactive between firmware updates. |
| Active Current (ICC) | 35 mA max at 5 MHz - defines minimum decoupling capacitance (0.1 µF ceramic + 4.7 µF bulk) needed to maintain VCC stability during burst reads. |
| Programming Voltage (VPP) | 13.0 V ±0.25 V - requires dedicated high-voltage programming circuitry; not compatible with standard 5V-only programmers. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded applications including test equipment and peripheral controllers. |
Pinout & Package
AT27C010-70JC is supplied 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 accepting 0x00000–0x1FFFF; A16 is MSB for full 128K addressing. |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus in read mode; high-impedance when CE or OE is inactive. |
| CE | Chip Enable | Active-low chip select; must be stable before address setup to meet tCES ≥2 µs during programming. |
| OE | Output Enable | Active-low output gate; controls data bus drive timing (tOE = 30 ns max); independent of CE for flexible bus arbitration. |
| PGM | Program Strobe | Active-low programming trigger; accepts 95–105 µs pulses synchronized to VPP and VCC ramping. |
| VPP | Programming Voltage | 13.0 V input for programming; must be applied after VCC and removed before VCC per sequencing rule. |
| VCC | Power Supply | 5V ±10% main supply; supplies both logic and internal charge pumps during programming (ICC2 + IPP2 ≤60 mA). |
| GND | Ground | Reference node for all signals; requires low-inductance connection to minimize noise during rapid programming transitions. |
| NC | No Connect | Pin 14 (PLCC) is 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 firmware update cycle time by >5× vs. legacy EPROMs. |
| Integrated Product Identification Code | Two-byte electronic ID (0x1E manufacturer, 0x05 device) readable via A9 = 12.0 V and A0 toggle - enables automatic algorithm selection in production programmers. |
| JEDEC-Standard Packages | 32J PLCC footprint - ensures drop-in replacement across Atmel's AT27C010 family and compatibility with existing PLCC sockets and rework tooling. |
| High-Reliability CMOS Process | 2000V HBM ESD rating and 200 mA latchup immunity - eliminates need for external protection in industrial control panels with noisy power rails. |
| Two-Line Control Architecture | Independent CE and OE inputs - allows partial decoding and selective output disabling without affecting chip enable state, simplifying bus arbitration logic. |
Applications
| Industrial PLC Firmware Storage | Legacy Test Equipment Boot ROM |
|---|---|
|
Use Scenario: Stores fixed ladder-logic interpreter and I/O mapping tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Non-volatile boot memory providing deterministic 70 ns read latency to ensure real-time scan-cycle timing compliance. Use Value: Eliminates reliance on slow serial EEPROM or volatile RAM + battery backup, improving system reliability and reducing BOM count. |
Use Scenario: Holds self-test routines and calibration constants in benchtop oscilloscopes and signal generators manufactured pre-2000. IC Role / Device Role / Timing Role: Static firmware repository accessed only at power-on reset; no runtime writes required after initial programming. Use Value: Guarantees bit-perfect firmware retention over 20+ years without refresh cycles or wear leveling management. |
| Embedded Controller BIOS | Avionics Display Initialization Code |
|
Use Scenario: Contains hardware initialization sequences and interrupt vector table for 8051-based motor control modules in HVAC systems. IC Role / Device Role / Timing Role: Primary boot ROM mapped to 0x0000–0x1FFFF; accessed during cold start before RAM initialization. Use Value: Enables zero-wait-state execution from reset vector, meeting <100 µs boot-to-first-instruction requirement. |
Use Scenario: Stores display driver initialization firmware in certified cockpit instrumentation where firmware integrity is safety-critical. IC Role / Device Role / Timing Role: One-time programmed configuration store; read-only access during power-up sequence with traceable programming log. Use Value: Meets DO-254 Level A design assurance by eliminating field-programmable elements and enabling full post-programming verification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C010-70PC | Same die, 32P6 PDIP package (0.600" width); 70 ns tACC, identical VPP/ICC specs. | Through-hole assembly; requires wave solder or socket; less suitable for high-density SMT boards. | Select when legacy board repair, prototyping, or socket-based validation is required. |
| AT27C010-70TC | Same die, 32T TSOP package; same 70 ns timing and programming characteristics. | Thin-profile surface-mount; higher thermal resistance than PLCC; requires fine-pitch reflow profile. | Select for space-constrained consumer electronics where board thickness is critical. |
Compared with AT27C010-70PC and AT27C010-70TC, the AT27C010-70JC offers superior thermal dissipation and mechanical robustness in vibration-prone industrial enclosures due to its gull-wing PLCC leads and larger thermal pad area, while maintaining identical electrical behavior and programming compatibility.
Availability
AT27C010-70JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy test equipment boot ROM, and embedded controller BIOS applications requiring stable component supply and long-term obsolescence support.
Supply support for AT27C010-70JC 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 for industrial, automotive, and consumer markets.
The AT27C010 series was designed as a drop-in upgrade path for NMOS EPROMs like the 27128 and 27256, delivering lower power, faster access, and enhanced programming reliability for firmware storage in cost-sensitive embedded systems.
FAQ
What is the maximum allowable VPP voltage for reliable programming of the AT27C010-70JC?
The AT27C010-70JC requires VPP = 13.0 V ±0.25 V during programming, with absolute maximum rating of +14.0 V. Exceeding 13.25 V risks oxide breakdown in the floating-gate cells, leading to premature bit failure. The AT27C010-70JC datasheet specifies VID on A9 must also be held at 11.5–12.5 V during product ID read, confirming tight voltage tolerance requirements across all high-voltage operations.
Can the AT27C010-70JC be used in place of an AT27C010-55JC without redesigning the PCB?
Yes - the AT27C010-70JC and AT27C010-55JC share identical pinout, package (32J PLCC), supply requirements, and logic thresholds. The only difference is guaranteed read access time: 70 ns vs. 55 ns. Systems designed for the slower 70 ns grade will operate correctly with the 55 ns part, but substituting the 70 ns AT27C010-70JC into a 55 ns–constrained design may cause timing violations under worst-case conditions.
Does the AT27C010-70JC support in-system programming (ISP)?
No - the AT27C010-70JC is a one-time programmable EPROM requiring UV-erasable predecessors' replacement methodology: it must be programmed in a dedicated EPROM programmer prior to mounting. Its VPP = 13.0 V requirement and lack of serial interface or command protocol preclude in-circuit reprogramming. The AT27C010-70JC is intended for final firmware image burn-in during manufacturing, not field updates.
What decoupling capacitors are required for stable operation of the AT27C010-70JC?
The AT27C010-70JC requires two decoupling capacitors: a 0.1 µF ceramic capacitor placed between VCC and GND as close as possible to pins 16 and 32, plus a 4.7 µF bulk electrolytic capacitor near the power entry point of the EPROM array. This dual-capacitor network suppresses transient excursions caused by CE/OE switching and ensures VCC remains within ±10% during rapid read bursts, as specified in the "System Considerations" section of the AT27C010-70JC datasheet.
How is the manufacturer and device identification code read from the AT27C010-70JC?
The AT27C010-70JC identification code is read by asserting VPP = 12.0 V ±0.5 V on A9 while holding A1–A16 = VIL, then toggling A0: low (VIL) returns the manufacturer ID byte (0x1E), high (VIH) returns the device code byte (0x05). This mode is entered with CE = OE = VIL and requires no PGM activation. The AT27C010-70JC datasheet confirms this method is electrically verified and supported across all speed grades and packages.
AT27C010-70JC 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:
- 70 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)
AT27C010-70JC FAQ
1.How can I place an order for AT27C010-70JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-70JC 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 AT27C010-70JC reliable?
The price and inventory of AT27C010-70JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-70JC is usually 5 days.
3.What payment methods are accepted for AT27C010-70JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-70JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-70JC?
AT27C010-70JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-70JC 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 AT27C010-70JC?
For technical support, including AT27C010-70JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-70JC requirements.
6.How does Aetrix verify that AT27C010-70JC is sourced from the original manufacturer or authorized distributors?
All AT27C010-70JC 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 AT27C010-70JC meets industry standards.
7.What is the process for return or replacement of AT27C010-70JC?
All AT27C010-70JC units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-70JC, 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 AT27C010-70JC part is unused and in its original packaging.
Return procedure for AT27C010-70JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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