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Microchip Technology AT27BV1024-12JI
- Part No.:
- AT27BV1024-12JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
AT27BV1024-12JI.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,275
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Product details
Overview
AT27BV1024-12JI from Atmel is a 1-Mbit (64K × 16) one-time programmable EPROM optimized for low-voltage battery-powered systems, featuring 120 ns read access time at 2.7–3.6 V or 4.5–5.5 V, 20 µA max standby current, and JEDEC-standard PLCC-44 packaging. It serves as nonvolatile program storage in portable microprocessor-based designs requiring unregulated battery operation.
For engineers reviewing the AT27BV1024-12JI datasheet, AT27BV1024-12JI pinout, AT27BV1024-12JI application, or AT27BV1024-12JI equivalent, key selection criteria include dual-voltage compatibility (2.7–3.6 V / 4.5–5.5 V), rapid 100 µs/word programming, TTL/LVBO interface compliance, and industrial temperature range support (–40°C to +85°C).
Technical Context
The AT27BV1024-12JI implements a two-line control architecture (CE/OE) enabling bus contention avoidance in shared-memory systems. Its address decoding supports full 16-bit parallel access across A0–A15, with O0–O15 outputs delivering CMOS- and TTL-compatible logic levels under both 3V and 5V supply conditions.
Programming uses a dedicated PGM strobe with VPP = 13.0 V and VCC = 6.5 V, executing a verified Rapid™ algorithm (100 µs/word typical, up to 10 pulses per word). Product identification is enabled via A9 high-voltage (12.0 V) and A0 toggle, returning manufacturer code 001Eh and device code 00F1h.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576-bit (64K × 16) OTP EPROM - supports 16-bit data bus architectures without external demultiplexing. |
| Read Access Time | 120 ns max at VCC = 2.7–3.6 V or 4.5–5.5 V - meets timing budgets for 5 MHz microprocessor bus cycles. |
| Supply Voltage Range | 2.7–3.6 V or 4.5–5.5 V - eliminates need for voltage regulation in battery-powered handheld systems. |
| Standby Current | 20 µA max at VCC = 3.6 V - extends battery life in sleep-mode embedded applications. |
| Active Power Dissipation | 36 mW max at 5 MHz, VCC = 3.6 V - enables thermal management in dense PCB layouts. |
| ESD Protection | 2,000 V HBM - ensures robustness during board handling and system integration. |
| Latchup Immunity | 200 mA - prevents destructive latchup under transient overcurrent events. |
Pinout & Package
AT27BV1024-12JI is supplied in a 44-lead Plastic Leaded Chip Carrier (PLCC-44) package per JEDEC MS-018 AC. Pin 1 is marked by corner notch; pins 1 and 23 are no-connect (NC). Both GND pins (pins 22 and 44) must be connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus interface - selects one of 64K memory locations; all inputs must be stable before CE/OE assertion. |
| O0–O15 | Data Outputs | 16-bit bidirectional data bus - driven only when CE = OE = VIL; high-impedance otherwise. |
| CE | Chip Enable | Primary chip-select input - device enters standby (high-Z outputs) when CE = VIH; required for bus arbitration. |
| OE | Output Enable | Secondary output control - enables data output only when CE = VIL; allows output disable without exiting standby. |
| PGM | Program Strobe | Active-low programming trigger - initiates 100 µs pulse programming cycle when VPP = 13.0 V and VCC = 6.5 V. |
| VCC | Power Supply | Main logic supply - accepts 2.7–3.6 V or 4.5–5.5 V; must be applied simultaneously with or before VPP during programming. |
| VPP | Programming Voltage | High-voltage programming supply - 13.0 V ± 0.25 V required only during programming; must be decoupled with 0.1 µF capacitor. |
| GND | Ground | Signal and power reference - both GND pins (22 and 44) must be connected to minimize ground bounce and noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Voltage Read Operation | Operates natively at 2.7–3.6 V (battery) or 4.5–5.5 V (legacy 5V systems) - enables single-BOM deployment across mixed-voltage platforms. |
| Rapid™ Programming Algorithm | 100 µs/word typical programming time with automatic verify/reprogram loop - reduces production programming cycle time by >5× vs. standard EPROMs. |
| Integrated Product ID Code | Manufacturer ID 001Eh and Device ID 00F1h readable via A9/A0 high-voltage protocol - enables automated programmer validation and BOM traceability. |
| JEDEC Pin Compatibility | Pinout matches AT27C1024 - allows drop-in replacement in existing 5V designs without PCB revision. |
| Low-Power Standby Mode | <1 µA typical ICC at 3V - supports ultra-low-power wake-on-interrupt architectures in portable devices. |
Applications
| Portable Medical Devices | Industrial PLC Firmware Storage |
|---|---|
|
Use Scenario: Battery-powered handheld diagnostic instruments requiring firmware persistence across power cycles and extended shelf life. IC Role / Device Role / Timing Role: Nonvolatile program memory storing boot code and calibration tables; accessed during cold start and firmware updates. Use Value: Unregulated 2.7–3.6 V operation eliminates DC-DC converter, reducing BOM cost and board area; 20 µA standby current extends battery service life to >5 years. |
Use Scenario: Ruggedized programmable logic controllers deployed in factory automation environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary firmware storage for real-time control engine; accessed continuously during runtime with deterministic 120 ns read latency. Use Value: Industrial temperature rating (–40°C to +85°C) and 200 mA latchup immunity ensure reliable operation in electrically noisy plant-floor settings. |
| Legacy System Upgrades | Embedded Test Equipment |
|
Use Scenario: Retrofitting aging 5V industrial controllers with low-power capability while retaining existing PCB layout and firmware binaries. IC Role / Device Role / Timing Role: Pin-compatible OTP EPROM replacement for AT27C1024; retains identical address/data mapping and timing interface. Use Value: JEDEC-standard PLCC-44 footprint and identical pinout enable direct socket replacement - no PCB rework or firmware modification required. |
Use Scenario: Automated test equipment requiring field-upgradable calibration constants and instrument configuration profiles. IC Role / Device Role / Timing Role: Secure, one-time programmable storage for calibration coefficients; programmed once during manufacturing using standard EPROM programmers. Use Value: Rapid™ programming (100 µs/word) cuts calibration station throughput time; integrated ID code ensures traceability of calibration data to specific device lot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C1024-12JC | 5V-only operation (4.5–5.5 V); no low-voltage mode; same 120 ns access, PLCC-44 package. | Restricted to legacy 5V systems; cannot operate from unregulated batteries. | Select when system lacks 2.7–3.6 V rail and requires lowest-cost 5V OTP EPROM with identical timing. |
| MN65E1000BGP | 1-Mbit OTP EPROM in 44-pin PLCC; 150 ns access time; 5V supply only; no Rapid™ programming. | Higher access latency; no dual-voltage support; slower programming (≥500 µs/word). | Choose only if AT27BV1024-12JI is unavailable and design tolerates 30 ns longer read delay and higher power consumption. |
Compared with AT27C1024-12JC and MN65E1000BGP, the AT27BV1024-12JI uniquely delivers dual-voltage operation, sub-1 µA standby current, and 100 µs/word programming - making it the sole option for battery-constrained, field-upgradeable, or mixed-voltage embedded systems requiring OTP persistence.
Availability
AT27BV1024-12JI is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial PLC firmware storage, legacy system upgrades, embedded test equipment, and battery-powered handheld terminals requiring stable component supply across long product lifecycles.
Supply support for AT27BV1024-12JI 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 designer specializing in microcontrollers, nonvolatile memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT27BV1024 product line was engineered for low-power, battery-operated embedded systems needing reliable OTP program storage - emphasizing voltage flexibility, rapid programming, and JEDEC interoperability.
FAQ
What is the operating temperature range for the AT27BV1024-12JI?
The AT27BV1024-12JI is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the Ordering Information table on page 10 of the datasheet, where "JI" suffix explicitly denotes the industrial grade. The device maintains full read timing (120 ns max) and electrical parameters across this entire range, making it suitable for deployment in harsh environmental conditions such as factory floors or outdoor instrumentation.
Does the AT27BV1024-12JI require external voltage regulation when powered from a lithium battery?
No, the AT27BV1024-12JI does not require external voltage regulation when powered from a lithium battery. Its specified unregulated battery supply range is 2.7 V to 3.6 V - matching the nominal discharge curve of single-cell Li-ion/Li-polymer batteries (3.0–3.6 V fully charged, down to ~2.7 V cutoff). This eliminates the need for a DC-DC converter or LDO, simplifying power design and reducing quiescent current overhead in portable systems.
Can the AT27BV1024-12JI be programmed using standard EPROM programmers?
Yes, the AT27BV1024-12JI is fully compatible with standard EPROM programmers supporting the AT27C1024. As stated in the datasheet (page 8, note 1), it shares the same Product Identification Code and programming methodology. Programmers must supply VPP = 13.0 V and VCC = 6.5 V during programming, and apply the Rapid™ 100 µs PGM pulse - capabilities supported by industry-standard units such as Data I/O PS-3000 and BP Microsystems universal programmers.
What decoupling capacitors are required for stable operation of the AT27BV1024-12JI?
The AT27BV1024-12JI requires two decoupling capacitors: a 0.1 µF high-frequency ceramic capacitor placed between VCC and GND as close as possible to the device (per System Considerations, page 3), and a 4.7 µF bulk electrolytic capacitor near the power entry point for arrays. During programming, an additional 0.1 µF capacitor is required between VPP and GND (page 7, Programming Waveforms note 3). These values are mandatory to suppress transients that could cause non-conformance or programming failure.
Is the AT27BV1024-12JI pin-compatible with the AT27C1024 series?
Yes, the AT27BV1024-12JI is pin-compatible with JEDEC-standard AT27C1024 devices, as explicitly stated in the Features section (page 1). Both share identical PLCC-44 pinouts, signal naming (A0–A15, O0–O15, CE, OE, PGM, VCC, VPP, GND), and functional behavior in read mode. This allows direct socket replacement in existing 5V designs without PCB changes - provided VPP is properly managed during programming.
AT27BV1024-12JI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 44-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:
- 64K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 120 ns
- Voltage - Supply:
- 2.7V ~ 3.6V, 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.6x16.6)
AT27BV1024-12JI FAQ
1.How can I place an order for AT27BV1024-12JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV1024-12JI 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 AT27BV1024-12JI reliable?
The price and inventory of AT27BV1024-12JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV1024-12JI is usually 5 days.
3.What payment methods are accepted for AT27BV1024-12JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV1024-12JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV1024-12JI?
AT27BV1024-12JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV1024-12JI 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 AT27BV1024-12JI?
For technical support, including AT27BV1024-12JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV1024-12JI requirements.
6.How does Aetrix verify that AT27BV1024-12JI is sourced from the original manufacturer or authorized distributors?
All AT27BV1024-12JI 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 AT27BV1024-12JI meets industry standards.
7.What is the process for return or replacement of AT27BV1024-12JI?
All AT27BV1024-12JI units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV1024-12JI, 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 AT27BV1024-12JI part is unused and in its original packaging.
Return procedure for AT27BV1024-12JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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