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Microchip Technology AT27BV4096-12JU
- Part No.:
- AT27BV4096-12JU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
AT27BV4096-12JU.pdf
- Description:
- IC EPROM 4MBIT PARALLEL 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,003
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Product details
Overview
AT27BV4096-12JU from Atmel is a 4-Mbit (256K × 16) one-time programmable EPROM optimized for low-voltage battery-powered systems, featuring 120 ns read access time, dual supply operation (2.7–3.6 V or 4.5–5.5 V), and JEDEC-standard 44-lead PLCC packaging. It serves as nonvolatile program storage in portable microprocessor systems requiring unregulated battery voltage tolerance and TTL/LVBO interface compatibility.
For engineers reviewing the AT27BV4096-12JU datasheet, AT27BV4096-12JU pinout, AT27BV4096-12JU application, or AT27BV4096-12JU equivalent, key selection criteria include its 120 ns tACC timing at 3.6 V, ≤20 µA standby current, Rapid™ programming (100 µs/word), dual-voltage read capability, and pin compatibility with AT27C4096 in PLCC-44 footprint.
Technical Context
The AT27BV4096-12JU implements a CMOS OTP EPROM architecture with two-line control (CE/OE), supporting fast random-access reads and rapid byte/word programming via dedicated VPP (13.0 V) and elevated VCC (6.5 V). Its by-16 organization enables efficient data bus utilization in 16-bit and 32-bit embedded systems.
It delivers TTL-compatible outputs at 3.0 V and meets JEDEC LVBO specifications at 2.7 V, enabling interoperability with both 3 V and 5 V logic families without level-shifting. The integrated product identification code (001Eh manufacturer ID, 00F4h device code) ensures automatic algorithm selection in industry-standard programmers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4,194,304-bit (256K × 16) - supports full 16-bit data bus width without multiplexing |
| Read Access Time | 120 ns max at VCC = 2.7–3.6 V - enables direct interfacing with 8 MHz microcontrollers |
| Supply Voltage Range | 2.7 V to 3.6 V or 4.5 V to 5.5 V - eliminates need for regulated battery supply in portable designs |
| Standby Current | 20 µA max at VCC = 3.6 V - extends battery life in always-on embedded systems |
| Active Power Dissipation | 36 mW max at 5 MHz, VCC = 3.6 V - reduces thermal load in dense PCB layouts |
| Programming Speed | 100 µs/word typical - cuts firmware update time vs. legacy 5 V EPROMs |
| ESD Protection | 2,000 V HBM - enhances robustness during handling and board assembly |
| Latchup Immunity | 200 mA - prevents destructive latchup under transient overvoltage conditions |
Pinout & Package
AT27BV4096-12JU is supplied in a 44-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-018 AC. Pin 1 is marked by corner notch; pins 1 and 23 are no-connect (NC) and must remain unconnected. Both GND pins (pins 22 and 40) must be soldered to ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; all inputs CMOS/TTL compatible |
| O0–O15 | Data Outputs | 16-bit bidirectional data bus; outputs drive TTL loads at 3.0 V and meet LVBO spec at 2.7 V |
| CE | Chip Enable | Active-low chip select; controls device activation and power state transitions |
| OE | Output Enable | Active-low output gate; enables high-impedance tri-state when deasserted |
| VCC | Power Supply | Primary supply pin; accepts 2.7–3.6 V or 4.5–5.5 V; requires local 0.1 µF ceramic decoupling |
| VPP | Programming Voltage | 13.0 V programming supply; must be applied simultaneously with or after VCC |
| GND (2) | Ground | Two dedicated ground terminals (pins 22 and 40); both must be connected for signal integrity |
| NC (2) | No Connect | Pins 1 and 23 - physically present but electrically unused; must not be bonded or routed |
Key Features
| Feature | Design Value |
|---|---|
| Unregulated Battery-Voltage™ Operation | Eliminates external voltage regulator in battery-powered systems, reducing BOM count and PCB area |
| Rapid™ Programming Algorithm | Reduces average programming time by >5× vs. standard EPROMs, improving production throughput |
| Integrated Product Identification Code | Enables auto-detection and algorithm selection in universal programmers, preventing misprogramming |
| Dual-Voltage Interface Compatibility | Supports seamless integration into mixed-voltage systems (e.g., 3 V core + 5 V I/O) without level shifters |
| JEDEC-Standard PLCC and TSOP Packages | Ensures drop-in replacement capability and compatibility with existing reflow and test infrastructure |
Applications
| Portable Medical Devices | Industrial Handheld Terminals |
|---|---|
|
Use Scenario: Battery-operated glucose meters and ECG monitors requiring reliable firmware storage across temperature extremes. IC Role / Device Role / Timing Role: Nonvolatile program memory holding boot code and calibration tables; accessed during cold start and periodic self-test. Use Value: 20 µA standby current extends single-battery life beyond 2 years; 120 ns access enables real-time sensor data processing. |
Use Scenario: Ruggedized barcode scanners and asset trackers deployed in factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Firmware ROM for ARM-based controller; retains configuration and communication protocol stacks. Use Value: Industrial-grade -40°C to +85°C operation ensures reliability; 2,000 V ESD protection withstands repeated electrostatic discharge in manufacturing floors. |
| Legacy System Upgrades | Embedded Communication Modules |
|
Use Scenario: Retrofitting older 5 V industrial controllers with low-power replacements while retaining existing PCB layout. IC Role / Device Role / Timing Role: Pin-compatible upgrade for AT27C4096; stores updated firmware and safety-critical lookup tables. Use Value: Direct PLCC-44 footprint compatibility avoids PCB redesign; dual-voltage support allows gradual system migration. |
Use Scenario: Cellular modem modules in remote telemetry units powered by lithium-thionyl chloride batteries. IC Role / Device Role / Timing Role: Boot ROM storing LTE stack initialization routines and carrier-specific configuration parameters. Use Value: Unregulated 2.7–3.6 V operation matches battery discharge curve; 100 µs/word programming enables field firmware updates via serial interface. |
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 pinout and timing | Requires regulated 5 V supply; unsuitable for unregulated battery systems | Select when legacy 5 V infrastructure exists and battery operation is not required |
| MX29LV400CTTI-12G | Flash memory (not OTP); 3 V operation only; 48-pin TSOP; supports erase/rewrite | Enables field firmware updates; higher endurance but larger footprint and different command set | Select when reprogrammability is mandatory and PCB layout can accommodate 48-pin TSOP |
Compared with AT27C4096-12JC, AT27BV4096-12JU adds battery-voltage flexibility and lower power; compared with MX29LV400CTTI-12G, it offers simpler interface, smaller PLCC footprint, and guaranteed one-time write integrity-critical for safety-critical boot code.
Availability
AT27BV4096-12JU is available at Aetrix Electronics and suitable for portable medical devices, industrial handheld terminals, and legacy system upgrades requiring stable component supply, long-term lifecycle assurance, and JEDEC-standard PLCC packaging.
Supply support for AT27BV4096-12JU 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 innovator specializing in microcontrollers, nonvolatile memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT27BV4096 product line was designed specifically for battery-powered embedded systems needing high-reliability OTP storage with unregulated voltage tolerance and minimal power overhead.
FAQ
What is the maximum operating temperature range for the AT27BV4096-12JU?
The AT27BV4096-12JU 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 official Atmel datasheet (Rev. 0640B–10/98), where the "I" suffix denotes industrial grade. The device maintains full functionality-including 120 ns access time and 20 µA standby current-across this entire range.
Does the AT27BV4096-12JU require external capacitors, and if so, what values?
Yes, the AT27BV4096-12JU requires two external capacitors: a 0.1 µF high-frequency ceramic capacitor placed between VCC and GND as close as possible to the device, and a 4.7 µF bulk electrolytic capacitor near the power supply entry point for arrays. These are mandated in the "System Considerations" section (page 2) to suppress voltage transients during CE transitions and stabilize the supply rail.
Can the AT27BV4096-12JU be programmed using standard AT27C4096 programming equipment?
Yes, the AT27BV4096-12JU programs identically to the AT27C4096 and uses the same programming equipment. As stated on page 2, it "programs exactly the same way as a standard 5V AT27C4096" and shares the same Integrated Product Identification Code (001Eh/00F4h), enabling automatic algorithm recognition in industry-standard programmers.
What is the purpose of the VPP pin on the AT27BV4096-12JU, and what voltage is required?
The VPP pin on the AT27BV4096-12JU supplies the programming voltage during OTP write operations. It requires 13.0 V ± 0.25 V (as specified in the DC Programming Characteristics table on page 7), and must be applied simultaneously with or after VCC. During normal read operation, VPP may be tied to VCC, but it must be isolated during programming to prevent damage.
Is the AT27BV4096-12JU pin-compatible with the AT27C4096 in the PLCC-44 package?
Yes, the AT27BV4096-12JU is explicitly pin-compatible with the JEDEC-standard AT27C4096 in the 44-lead PLCC package. This is confirmed in the "Features" section (page 1): "Pin Compatible with JEDEC Standard AT27C4096". Pin functions, numbering, and physical dimensions match exactly-enabling drop-in replacement in existing designs.
AT27BV4096-12JU 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)
AT27BV4096-12JU FAQ
1.How can I place an order for AT27BV4096-12JU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV4096-12JU 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 AT27BV4096-12JU reliable?
The price and inventory of AT27BV4096-12JU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV4096-12JU is usually 5 days.
3.What payment methods are accepted for AT27BV4096-12JU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV4096-12JU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV4096-12JU?
AT27BV4096-12JU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV4096-12JU 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 AT27BV4096-12JU?
For technical support, including AT27BV4096-12JU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV4096-12JU requirements.
6.How does Aetrix verify that AT27BV4096-12JU is sourced from the original manufacturer or authorized distributors?
All AT27BV4096-12JU 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 AT27BV4096-12JU meets industry standards.
7.What is the process for return or replacement of AT27BV4096-12JU?
All AT27BV4096-12JU units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV4096-12JU, 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 AT27BV4096-12JU part is unused and in its original packaging.
Return procedure for AT27BV4096-12JU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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