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Microchip Technology AT27BV4096-12VC
- Part No.:
- AT27BV4096-12VC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 40-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT27BV4096-12VC.pdf
- Description:
- IC EPROM 4MBIT PARALLEL 40VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,596
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Product details
Overview
AT27BV4096-12VC 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 JEDEC-standard 40-lead TSOP packaging. It delivers TTL-compatible outputs at 3.0 V and LVBO compliance at 2.7 V, enabling direct integration into portable 16/32-bit microprocessor systems without voltage regulation.
For engineers reviewing the AT27BV4096-12VC datasheet, AT27BV4096-12VC pinout, AT27BV4096-12VC application, or AT27BV4096-12VC equivalent, key selection considerations include its rapid 100 µs/word programming algorithm, <1 µA typical standby current at 3 V, 2,000 V ESD protection, and pin compatibility with AT27C4096 in both PLCC and TSOP footprints.
Technical Context
The AT27BV4096-12VC implements a two-line control architecture using CE and OE to manage bus contention and enable flexible memory mapping in embedded systems. Its dual-supply capability supports seamless operation across 3V and 5V host environments without hardware reconfiguration.
It uses Atmel's Rapid™ Programming algorithm requiring VCC = 6.5 V and VPP = 13.0 V during programming, with integrated product identification code (001Eh manufacturer ID, 00F4h device ID) for automated programmer recognition. The device features CMOS/TTL-compatible I/O and supports JEDEC LVTTL/LVBO interface standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4,194,304 bits (256K × 16 organization) |
| Read Access Time | 120 ns max - enables real-time instruction fetch in 5 MHz microprocessor systems |
| 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 3.6 V - extends battery life in always-on low-power modes |
| Active Power Dissipation | 36 mW max at 5 MHz and 3.6 V - reduces thermal load in dense PCB layouts |
| ESD Protection | 2,000 V HBM - ensures robustness during handling and board assembly |
| Programming Speed | 100 µs/word typical - accelerates production programming throughput |
Pinout & Package
AT27BV4096-12VC is packaged in a 40-lead TSOP (10 × 14 mm, JEDEC MO-142 CA), with pins arranged in a single-row surface-mount configuration. Both GND pins must be connected; no internal bonding to pin 1 or pin 40.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word decoding |
| O0–O15 | Data Outputs | 16-bit bidirectional data bus compatible with 16-bit microprocessors |
| CE | Chip Enable | Active-low global enable controlling device activation and power state transitions |
| OE | Output Enable | Active-low output gate enabling high-impedance tri-state during bus sharing |
| VCC | Power Supply | Primary logic supply (2.7–3.6 V or 4.5–5.5 V); must be applied before VPP |
| VPP | Programming Voltage | 13.0 V ± 0.25 V input required only during programming; internally isolated during read mode |
| GND (pins 20, 40) | Ground Reference | Dual ground connections reduce noise coupling and improve signal integrity |
| NC | No Connect | Unbonded pins (e.g., A18–A19 not implemented); must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | Reduces production programming time to ~100 µs/word while ensuring reliable fuse-link programming |
| Integrated Product ID Code | Enables automatic device recognition by programmers via A9/VH and A0 toggling - eliminates manual part selection errors |
| Dual-Voltage Interface Compatibility | Outputs meet TTL logic thresholds at 3.0 V and LVBO specs at 2.7 V - allows interoperability with mixed-voltage system components |
| Two-Line Control Architecture | Separate CE and OE inputs prevent bus contention and support flexible memory-mapped I/O timing in multi-peripheral systems |
| High-Reliability Process | 200 mA latchup immunity and 2,000 V ESD protection ensure field reliability in industrial and portable environments |
Applications
| Handheld Medical Diagnostic Device | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Battery-powered ultrasound probe storing firmware and calibration tables in a sealed enclosure with no voltage regulator. IC Role / Device Role / Timing Role: OTP EPROM providing nonvolatile program storage with direct 3.3 V battery interface and 120 ns read latency for real-time DSP boot. Use Value: Eliminates external DC-DC regulation, reducing BOM count and power loss while maintaining deterministic boot timing. | Use Scenario: Field-upgradeable firmware storage in an IP67-rated programmable logic controller operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade OTP memory holding ladder logic runtime and I/O configuration with guaranteed read stability over full temperature range. Use Value: Enables secure, tamper-resistant firmware updates via standard EPROM programmer without exposing the controller to flash wear-out or corruption risks. |
| Embedded Automotive Infotainment Boot ROM | Legacy Industrial Instrumentation Calibration Memory |
Use Scenario: Secondary boot ROM in a head-unit MCU that must operate from either 12 V vehicle supply (via 5 V rail) or backup 3.3 V coin cell during power loss. IC Role / Device Role / Timing Role: Dual-range OTP EPROM delivering identical 120 ns access time and TTL-compatible outputs across both supply modes. Use Value: Simplifies power architecture by removing need for separate 3.3 V and 5 V memory devices - single BOM item supports dual-host compatibility. | Use Scenario: Permanent calibration coefficient storage in a benchtop multimeter where data retention >20 years and write-once security are mandatory. IC Role / Device Role / Timing Role: One-time programmable memory storing factory-trimmed ADC offset/gain values, accessed only during power-on self-test. Use Value: Guarantees immutable calibration data immune to accidental overwrite or firmware bugs - meets ISO/IEC 17025 traceability requirements. |
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 2.7–3.6 V support; same 120 ns tACC and 40-lead TSOP footprint | Requires regulated 5 V supply; unsuitable for unregulated battery systems | Select when system already provides stable 5 V rail and legacy design reuse is prioritized |
| MX29LV400CTT-90G | Flash-based, 512 K × 8 organization; 90 ns access; 3.0 V core with 5 V I/O tolerance; sector-erase capable | Reprogrammable; different density and bus width; requires erase cycles and command sequences | Select when field firmware updates are needed - not a drop-in replacement due to architecture and protocol differences |
Compared with AT27C4096-12JC, the AT27BV4096-12VC adds true low-voltage operation and battery-direct capability but retains identical pinout and programming compatibility. Compared with MX29LV400CTT-90G, it offers simpler interface and guaranteed one-time write security but lacks reprogrammability - choice depends on whether update flexibility or data immutability is the primary requirement.
Availability
AT27BV4096-12VC is available at Aetrix Electronics and suitable for handheld medical diagnostics, industrial PLCs, automotive infotainment boot systems, and legacy instrumentation requiring stable component supply with long-term lifecycle assurance.
Supply support for AT27BV4096-12VC 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 applications.
The AT27BV4096 belongs to Atmel's Battery-Voltage™ OTP EPROM family, designed specifically to eliminate voltage regulation in portable and battery-operated systems while maintaining performance parity with 5 V EPROMs.
FAQ
What is the maximum operating temperature range for the AT27BV4096-12VC?
The AT27BV4096-12VC 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 the "-12VC" suffix explicitly denotes the 40-lead TSOP package in the industrial grade. The device maintains full read timing (120 ns tACC) and electrical compliance across this entire range.
Does the AT27BV4096-12VC require external capacitors, and if so, what values?
Yes, the AT27BV4096-12VC requires a 0.1 µF ceramic capacitor between VCC and GND, placed as close as possible to the device pins, to suppress switching transients during CE/standby transitions. For arrays with multiple devices, a 4.7 µF bulk electrolytic capacitor is also recommended near the power entry point. These requirements are specified in the "System Considerations" section (page 2) and repeated in the AC Characteristics notes (page 5).
Can the AT27BV4096-12VC be programmed using standard AT27C4096 programming equipment?
Yes, the AT27BV4096-12VC programs identically to the AT27C4096 and uses the same programming equipment. The datasheet states it "programs exactly the same way" and shares the same Integrated Product Identification Code (001Eh/00F4h). However, programming requires VCC = 6.5 V and VPP = 13.0 V - equipment must support these voltages, not just 5 V.
Is the AT27BV4096-12VC pin-compatible with the AT27C4096 in the 40-lead TSOP package?
Yes, the AT27BV4096-12VC is pin-compatible with the AT27C4096 in the 40-lead TSOP (40V) package. The datasheet explicitly states "Pin Compatible with JEDEC Standard AT27C4096" and confirms identical pin functions (A0–A17, O0–O15, CE, OE, VCC, VPP, GND) and layout in the TSOP Top View diagram (page 1). Both use JEDEC MO-142 CA outline.
What is the purpose of the VPP pin on the AT27BV4096-12VC, and is it used during normal read operation?
The VPP pin on the AT27BV4096-12VC is dedicated solely to programming and verification - it receives 13.0 V during programming and is unused (high-impedance) during normal read operation. The datasheet specifies VPP must be disconnected or held at ≤5.0 V during read mode, and warns that VCC must be applied before VPP and removed after VPP to prevent damage. No read functionality depends on VPP.
AT27BV4096-12VC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 40-TFSOP (0.488", 12.40mm Width)
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VSOP
AT27BV4096-12VC FAQ
1.How can I place an order for AT27BV4096-12VC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV4096-12VC 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 AT27BV4096-12VC reliable?
The price and inventory of AT27BV4096-12VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV4096-12VC is usually 5 days.
3.What payment methods are accepted for AT27BV4096-12VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV4096-12VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV4096-12VC?
AT27BV4096-12VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV4096-12VC 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 AT27BV4096-12VC?
For technical support, including AT27BV4096-12VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV4096-12VC requirements.
6.How does Aetrix verify that AT27BV4096-12VC is sourced from the original manufacturer or authorized distributors?
All AT27BV4096-12VC 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 AT27BV4096-12VC meets industry standards.
7.What is the process for return or replacement of AT27BV4096-12VC?
All AT27BV4096-12VC units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV4096-12VC, 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 AT27BV4096-12VC part is unused and in its original packaging.
Return procedure for AT27BV4096-12VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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