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Microchip Technology AT27BV4096-12JI
- Part No.:
- AT27BV4096-12JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
AT27BV4096-12JI.pdf
- Description:
- IC EPROM 4MBIT PARALLEL 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,808
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Product details
Overview
AT27BV4096-12JI from Atmel is a 4-Mbit (256K × 16) one-time programmable EPROM optimized for unregulated battery-powered systems, featuring 120 ns read access time, dual-voltage operation (2.7–3.6 V or 4.5–5.5 V), and industrial temperature range (−40°C to +85°C). It delivers TTL-compatible outputs at 3.0 V and supports rapid programming at 100 µs/word.
For engineers reviewing the AT27BV4096-12JI datasheet, AT27BV4096-12JI pinout, AT27BV4096-12JI application, or AT27BV4096-12JI equivalent, key selection criteria include low standby current (<20 µA), JEDEC-standard PLCC-44 packaging, dual-supply compatibility, and OTP reliability in portable microprocessor-based designs.
Technical Context
The AT27BV4096-12JI implements a CMOS OTP memory array with two-line control (CE/OE), enabling bus contention avoidance in shared-data-bus architectures. Its dual-voltage design allows direct interface with both 3.3 V logic and legacy 5 V systems without level shifters.
It uses Atmel's Rapid™ Programming Algorithm with 50 µs CE pulses and on-the-fly verification, requiring VCC = 6.5 V and VPP = 13.0 V during programming. Product identification is accessed via A9 = 12.0 V and A0 toggling, returning manufacturer code 001Eh and device code 00F4h.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4,194,304-bit (256K × 16) OTP EPROM - supports 16-bit data bus alignment for efficient microprocessor interfacing. |
| Read Access Time | 120 ns max at VCC = 2.7–3.6 V - enables real-time execution in 8/16-bit embedded systems without wait states. |
| Supply Voltage Range | 2.7–3.6 V or 4.5–5.5 V - eliminates need for voltage regulation in battery-powered handheld devices. |
| Standby Current | 20 µA max at VCC = 3.6 V - extends battery life in always-on or low-duty-cycle applications. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade deployment in automotive telematics and ruggedized instrumentation. |
| Programming Speed | 100 µs/word typical - reduces production programming time versus standard 5 V EPROMs. |
| ESD Protection | 2,000 V HBM - ensures robustness during board handling and field operation. |
Pinout & Package
AT27BV4096-12JI is supplied in a 44-lead Plastic Leaded Chip Carrier (PLCC-44) package per JEDEC MS-018 AC. Pins 1 and 23 are no-connect (NC); both GND pins (pins 22 and 39) must be connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A0–A17 directly map to memory location. |
| O0–O15 | Data Outputs | 16-bit bidirectional data bus; outputs driven only when CE = OE = low; high-impedance otherwise. |
| CE | Chip Enable | Active-low primary chip select; controls device activation and power state transition between active/standby. |
| OE | Output Enable | Active-low secondary enable; gates output drivers independently of CE to prevent bus contention. |
| VCC | Power Supply | Primary supply input (2.7–3.6 V or 4.5–5.5 V); must be applied before/with VPP during programming. |
| VPP | Programming Voltage | 13.0 V ± 0.25 V programming supply; requires external decoupling capacitor (0.1 µF ceramic). |
| GND | Ground | Two dedicated ground terminals (pins 22 and 39); both must be connected to minimize noise and ensure ESD immunity. |
| NC | No Connect | Pins 1 and 23 are internally unused; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Voltage Read Operation | Operates natively at 2.7–3.6 V or 4.5–5.5 V - removes need for external regulators or level translators in mixed-supply systems. |
| Rapid™ Programming Algorithm | 100 µs/word typical programming time with auto-verify loop - improves manufacturing throughput and yield. |
| Integrated Product ID Code | Manufacturer ID 001Eh and Device ID 00F4h accessible via A9/VH and A0 toggle - enables automatic algorithm selection in universal programmers. |
| JEDEC Pin Compatibility | Pinout matches AT27C4096 - allows drop-in replacement in existing 5 V designs while adding low-voltage capability. |
| Low-Power Standby Mode | 20 µA max ICC in standby (CE high) - critical for battery-backed firmware storage in sleep-mode systems. |
Applications
| Handheld Medical Diagnostic Device | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Portable ultrasound or glucose monitor storing calibrated algorithms and UI assets in battery-operated mode. IC Role / Device Role / Timing Role: OTP firmware ROM providing nonvolatile program storage with fast boot-time read access. Use Value: Unregulated 3.0 V battery operation eliminates DC/DC converter, reducing BOM cost and PCB area while maintaining 120 ns read timing. | Use Scenario: Field-deployable programmable logic controller retaining configuration and safety-critical firmware across thermal cycles. IC Role / Device Role / Timing Role: Industrial-grade OTP memory holding boot code and I/O mapping tables. Use Value: −40°C to +85°C rating and 2,000 V ESD protection ensure reliable operation in electrically noisy factory environments. |
| Legacy 5V Embedded Instrumentation | Modular Test Equipment Cartridge |
Use Scenario: Retrofit upgrade of aging benchtop oscilloscopes or spectrum analyzers using existing AT27C4096 footprints. IC Role / Device Role / Timing Role: Pin-compatible OTP replacement enabling dual-supply support without PCB redesign. Use Value: Identical PLCC-44 footprint and JEDEC-compliant timing allow reuse of socket and layout, cutting qualification time. | Use Scenario: Swappable firmware module for automated test systems requiring field-upgradable calibration constants and protocol stacks. IC Role / Device Role / Timing Role: Secure, tamper-resistant OTP storage for calibration data and cryptographic keys. Use Value: One-time programmability prevents accidental overwrite; rapid programming enables high-volume cartridge personalization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C4096-12JC | 5 V-only operation (4.5–5.5 V); no low-voltage mode; identical 120 ns tACC and PLCC-44 package. | Lacks unregulated battery support; unsuitable for 3 V systems. | Select when legacy 5 V design requires zero-change replacement and battery operation is not needed. |
| MX29LV400CTT-12G | Flash memory (not OTP); 3 V operation only; 48-pin TSOP; supports erase/rewrite; higher endurance but slower write. | Enables field updates; requires different command set and timing control logic. | Select when firmware update capability is required and OTP permanence is not mandatory. |
Compared with AT27C4096-12JC, the AT27BV4096-12JI adds battery-voltage flexibility and lower standby power, while MX29LV400CTT-12G offers reprogrammability at the cost of OTP security and simpler control interface.
Availability
AT27BV4096-12JI is available at Aetrix Electronics and suitable for industrial automation, portable medical instrumentation, and legacy system upgrades requiring stable component supply, long-term lifecycle assurance, and JEDEC-standard OTP memory.
Supply support for AT27BV4096-12JI 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 fabless semiconductor company specializing in microcontrollers, nonvolatile memory, and secure authentication ICs for embedded and industrial markets.
The AT27BV4096 product line was designed to deliver high-speed, low-power OTP memory for battery-constrained and mixed-voltage embedded systems, bridging the gap between legacy 5 V EPROMs and emerging 3 V platforms.
FAQ
What is the operating temperature range for the AT27BV4096-12JI?
The AT27BV4096-12JI is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the Ordering Information table (page 10) and applies specifically to the "I" suffix variant. The device undergoes extended thermal validation to ensure timing, leakage, and programming integrity across this full range, making it suitable for deployment in harsh environments such as factory floors or outdoor telemetry units.
Does the AT27BV4096-12JI support true 3.3 V operation without level shifting?
Yes, the AT27BV4096-12JI supports full 3.3 V operation (2.7–3.6 V range) with TTL-compatible outputs at VCC = 3.0 V, eliminating the need for external level shifters when interfacing with 3.3 V microprocessors. Its VIH/VIL thresholds scale with VCC (e.g., VIH ≥ 0.7 × VCC), and VOH/VOL meet TTL logic levels - all verified in the DC Operating Characteristics table (page 4) for the 2.7–3.6 V range.
Can the AT27BV4096-12JI be programmed using standard AT27C4096 programmers?
Yes, the AT27BV4096-12JI is programming-compatible with standard AT27C4096 equipment. It uses identical programming algorithms, pin assignments, and the same Integrated Product Identification Code (001Eh/00F4h), as stated on page 8. However, VPP must be set to 13.0 V (not 12.5 V or 21 V), and VCC must be raised to 6.5 V during programming - requirements enforced by the Rapid™ algorithm flowchart (page 9).
What decoupling capacitors are required for stable operation of the AT27BV4096-12JI?
The AT27BV4096-12JI requires a 0.1 µF ceramic capacitor between VCC and GND, placed as close as possible to the device (page 3, System Considerations). For arrays with multiple devices, a 4.7 µF bulk electrolytic capacitor should also be added near the power entry point. These values are specified to suppress transient voltage excursions during CE transitions and ensure reliable read/standby behavior under dynamic load conditions.
Is the AT27BV4096-12JI pin-compatible with the AT27C4096 in both PLCC and TSOP packages?
Yes, the AT27BV4096-12JI is pin-compatible with the AT27C4096 in the PLCC-44 package (44J), as explicitly stated in the Features section and confirmed by identical pin naming and function definitions in the Pin Configurations diagram (page 1). However, the TSOP-40 (40V) variant of AT27BV4096 is not pin-compatible with AT27C4096, which was not offered in TSOP - only the PLCC version supports direct replacement.
AT27BV4096-12JI 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:
- 4Mbit
- Memory Organization:
- 256K 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)
AT27BV4096-12JI FAQ
1.How can I place an order for AT27BV4096-12JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV4096-12JI 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 AT27BV4096-12JI reliable?
The price and inventory of AT27BV4096-12JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV4096-12JI is usually 5 days.
3.What payment methods are accepted for AT27BV4096-12JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV4096-12JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV4096-12JI?
AT27BV4096-12JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV4096-12JI 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 AT27BV4096-12JI?
For technical support, including AT27BV4096-12JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV4096-12JI requirements.
6.How does Aetrix verify that AT27BV4096-12JI is sourced from the original manufacturer or authorized distributors?
All AT27BV4096-12JI 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 AT27BV4096-12JI meets industry standards.
7.What is the process for return or replacement of AT27BV4096-12JI?
All AT27BV4096-12JI units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV4096-12JI, 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 AT27BV4096-12JI part is unused and in its original packaging.
Return procedure for AT27BV4096-12JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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