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Microchip Technology AT27C010-45JU-T
- Part No.:
- AT27C010-45JU-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27C010-45JU-T.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,074
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Product details
Overview
AT27C010-45JU-T from Microchip Technology (formerly Atmel) is a 128K × 8-bit, one-time programmable EPROM with 45 ns read access time, 5V ±10% supply, and JEDEC-standard 32-lead PLCC packaging. It serves as nonvolatile firmware storage in microprocessor systems requiring deterministic timing and no wait states, such as industrial controller boot memory or legacy embedded BIOS.
For engineers reviewing the AT27C010-45JU-T datasheet, AT27C010-45JU-T pinout, AT27C010-45JU-T application, or AT27C010-45JU-T equivalent, key selection criteria include verified 45 ns tACC, industrial temperature range (–40°C to +85°C), VPP-programmable architecture, CMOS/TTL compatibility, and rapid 100 µs/byte programming algorithm.
Technical Context
The AT27C010-45JU-T implements a parallel-addressed OTP EPROM architecture with dual-line control (CE/OE) enabling bus contention avoidance in shared-data-bus systems. Its internal logic supports five distinct operating modes-Read, Standby, Rapid Program, PGM Verify, and Product Identification-each defined by specific voltage and timing conditions on CE, OE, PGM, and VPP.
It uses high-reliability CMOS technology with 2000V ESD protection and 200mA latchup immunity, and integrates a product identification code accessible via A9 = 12.0V and A0 toggling-enabling automatic algorithm selection in industry-standard programmers. VPP must be applied simultaneously with or after VCC and removed simultaneously with or before VCC during programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 128K × 8-bit (1,048,576 bits); sufficient for full firmware images in 8-bit/16-bit microcontroller boot loaders |
| Read access time | 45 ns max (tACC); eliminates WAIT states in 5 MHz Z80, 8051, or 68K-based systems |
| Supply voltage | 5V ±10%; compatible with standard TTL/CMOS logic rails without regulation overhead |
| Active current | 25 mA max at 5 MHz; enables low-power operation in intermittently active control systems |
| Standby current | 100 µA max; supports energy-sensitive applications like battery-backed configuration storage |
| Programming speed | 100 µs/byte typical; reduces production programming cycle time versus older EPROMs |
| Operating temperature | –40°C to +85°C; qualified for industrial-grade environmental stress without derating |
Pinout & Package
AT27C010-45JU-T is packaged in a 32-lead plastic J-leaded chip carrier (PLCC), JEDEC MS-016 Variation AE compliant, with 12.32 mm × 14.86 mm body and 1.27 mm lead pitch. Pin 1 identifier is marked by a corner chamfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address inputs | 17-bit address bus supporting full 128K-byte addressing; TTL/CMOS-compatible thresholds |
| O0–O7 | Data outputs | 8-bit bidirectional data bus; VOH ≥ 2.4V at –400 µA ensures robust noise margin in noisy industrial environments |
| CE | Chip enable | Active-low global device select; controls entry into Standby mode when high |
| OE | Output enable | Active-low output gate; allows multiple devices on same data bus without external tri-state logic |
| PGM | Program strobe | Active-low pulse input triggering 100 µs programming cycle; requires precise timing per AC spec |
| VPP | Programming voltage | 12.0 V ±0.5 V input during programming; must be sequenced with VCC to prevent latchup |
| NC | No connect | Pin 32 (PLCC); electrically isolated-must not be tied to any net |
Key Features
| Feature | Design Value |
|---|---|
| Rapid programming algorithm | 100 µs/byte typical programming time with auto-verify loop; reduces production line throughput time vs. legacy EPROMs |
| Integrated product ID code | Manufacturer byte (0x1E) and device code (0x05) readable via A9=12V and A0 toggle; enables automated programmer setup without manual part selection |
| Two-line control interface | Dedicated CE and OE pins allow independent bus arbitration-prevents data corruption during multi-device read cycles |
| High-reliability process | 2000V HBM ESD rating and 200mA latchup immunity ensure survivability in uncontrolled manufacturing and field environments |
| Green packaging | Pb/halide-free PLCC package compliant with RoHS Directive 2011/65/EU; suitable for export-controlled industrial shipments |
Applications
| Industrial PLC Firmware Storage | Legacy Medical Device Boot ROM |
|---|---|
Use Scenario: Storing fixed ladder-logic firmware in programmable logic controllers deployed in factory automation lines with ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing deterministic 45 ns instruction fetch timing to avoid CPU pipeline stalls. Use Value: Eliminates reliance on slower serial EEPROM or flash, ensuring real-time response in safety-critical motion control loops. | Use Scenario: Holding immutable diagnostic self-test routines in Class II medical instruments certified under IEC 62304, operating continuously for >10 years. IC Role / Device Role / Timing Role: OTP EPROM used as tamper-resistant, bit-perfect firmware repository with zero write-cycle wear-out risk. Use Value: Guarantees firmware integrity over lifetime-no field updates required, eliminating revalidation burden for regulatory submissions. |
| Military Communications Radio BIOS | Avionics Display Controller Boot Code |
Use Scenario: Storing secure boot loader and cryptographic key initialization code in handheld tactical radios subjected to MIL-STD-810G shock/vibe profiles. IC Role / Device Role / Timing Role: Read-only memory delivering guaranteed 45 ns access under wide temperature swing (–40°C to +85°C) and power rail ripple. Use Value: Meets MIL-PRF-38535 Class V reliability requirements without derating; VPP sequencing prevents program corruption during brownout events. | Use Scenario: Hosting display initialization firmware in cockpit multifunction displays where firmware corruption could cause HUD failure. IC Role / Device Role / Timing Role: Primary boot ROM accessed at power-on reset; supports deterministic timing for critical display bring-up sequence. Use Value: 100 µA standby current minimizes parasitic drain on backup batteries during aircraft ground maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C020-45JU | 256K × 8-bit capacity; identical 45 ns speed, PLCC-32 package, and programming architecture | Supports larger firmware images; requires no PCB change if footprint and pinout match | Select when firmware exceeds 128 KB but board layout accommodates same PLCC-32 footprint |
| MX27C512AP-45L | 64K × 8-bit; 45 ns access, PDIP-28 package; lacks integrated ID code and VPP sequencing support | Requires external programming voltage control and manual algorithm selection | Choose only for cost-sensitive, low-complexity designs where ID code automation is unnecessary |
Compared with AT27C010-45JU-T, AT27C020-45JU doubles storage without sacrificing speed or reliability, while MX27C512AP-45L offers lower density and reduced feature set-making it suitable only for legacy replacements where ID code and VPP sequencing are unused.
Availability
AT27C010-45JU-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy medical device boot ROM, military communications radio BIOS, and avionics display controller boot code requiring stable component supply across extended product lifecycles.
Supply support for AT27C010-45JU-T 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
Microchip Technology acquired Atmel in 2016 and maintains full technical and manufacturing continuity for the AT27C series. The company specializes in high-reliability, long-lifecycle semiconductor solutions for industrial, aerospace, and automotive markets.
The AT27C010 belongs to Atmel's OTP EPROM product line, designed specifically for applications demanding bit-perfect firmware retention, zero write endurance limits, and deterministic timing in harsh environments-prioritizing reliability over reprogrammability.
FAQ
What is the maximum allowable VPP voltage for programming the AT27C010-45JU-T?
The AT27C010-45JU-T requires VPP = 12.0 V ± 0.5 V during programming, with absolute maximum rating of +14.0 V. Exceeding 12.5 V risks oxide breakdown in the floating-gate cells, potentially causing permanent bit errors. The AT27C010-45JU-T datasheet specifies VID (A9 identification voltage) tolerance as 11.5–12.5 V, confirming this window applies to all VPP-related operations including programming and ID code read.
Does the AT27C010-45JU-T support in-system programming?
No, the AT27C010-45JU-T does not support in-system programming. It requires removal from the target board and insertion into a dedicated EPROM programmer that supplies precise 12.0 V VPP, 6.5 V VCC, and controlled 100 µs PGM pulses. The AT27C010-45JU-T lacks internal charge pumps or ISP command protocols-its programming architecture assumes socketed, offline operation with external high-voltage generation.
Can the AT27C010-45JU-T operate reliably at 5.5 V supply?
Yes, the AT27C010-45JU-T is rated for 5V ±10%, meaning it operates reliably from 4.5 V to 5.5 V. At 5.5 V, ICC increases to ≤27 mA (within 25 mA max spec at 5 MHz), and tACC remains ≤45 ns. However, VPP must still be precisely 12.0 V ±0.5 V during programming-supplying VPP from a 5.5 V rail would cause programming failure. The AT27C010-45JU-T's VIH minimum of 2.0 V ensures full TTL/CMOS compatibility across this range.
How is the product identification code accessed on the AT27C010-45JU-T?
The AT27C010-45JU-T product identification code is accessed by setting A9 = 12.0 V (VID), holding A1–A16 = VIL, and toggling A0 between VIL (to read manufacturer byte 0x1E) and VIH (to read device code 0x05). Outputs O0–O7 reflect the selected byte. This function operates independently of CE/OE state and requires no VPP-only valid VCC and proper A9 voltage. The AT27C010-45JU-T datasheet Table 5-8 confirms this two-byte structure is electrically embedded and factory-trimmed.
What decoupling capacitors are required for stable operation of the AT27C010-45JU-T?
The AT27C010-45JU-T requires a 0.1 µF ceramic capacitor placed between VCC and GND, mounted as close as possible to pins 16 and 32 (VCC/GND) to suppress high-frequency transients during CE transitions. For boards with multiple AT27C010-45JU-T devices, a 4.7 µF bulk electrolytic capacitor must also be placed near the power entry point. These values are specified in Section 3 ("System considerations") of the AT27C010-45JU-T datasheet and prevent supply droop-induced read errors or false programming triggers.
AT27C010-45JU-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT27C010-45JU-T FAQ
1.How can I place an order for AT27C010-45JU-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C010-45JU-T 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 AT27C010-45JU-T reliable?
The price and inventory of AT27C010-45JU-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C010-45JU-T is usually 5 days.
3.What payment methods are accepted for AT27C010-45JU-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C010-45JU-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C010-45JU-T?
AT27C010-45JU-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C010-45JU-T 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 AT27C010-45JU-T?
For technical support, including AT27C010-45JU-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C010-45JU-T requirements.
6.How does Aetrix verify that AT27C010-45JU-T is sourced from the original manufacturer or authorized distributors?
All AT27C010-45JU-T 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 AT27C010-45JU-T meets industry standards.
7.What is the process for return or replacement of AT27C010-45JU-T?
All AT27C010-45JU-T units undergo pre-shipment inspection (PSI). If there is an issue with AT27C010-45JU-T, 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 AT27C010-45JU-T part is unused and in its original packaging.
Return procedure for AT27C010-45JU-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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