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Microchip Technology AT27BV040-15VI
- Part No.:
- AT27BV040-15VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT27BV040-15VI.pdf
- Description:
- IC EPROM 4MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,996
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Product details
Overview
AT27BV040-15VI from Atmel is a 4-Mbit (512K × 8) one-time programmable EPROM optimized for low-voltage battery-powered systems, featuring 150 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 JEDEC-standard PLCC/TSOP/VSOP packages.
For engineers reviewing the AT27BV040-15VI datasheet, AT27BV040-15VI pinout, AT27BV040-15VI application, or AT27BV040-15VI equivalent, key selection criteria include unregulated battery voltage support, rapid 100 µs/byte programming, <1 µA typical standby current at 3V, and compatibility with legacy AT27C040 systems without hardware redesign.
Technical Context
The AT27BV040-15VI implements a CMOS OTP memory architecture with two-line control (CE/OE), enabling bus contention avoidance in shared-data-bus systems. Its dual-supply design allows direct interface with both 3V logic and 5V hosts while maintaining JEDEC LVTTL/LVBO compliance.
It uses Atmel's Rapid™ Programming Algorithm requiring VCC = 6.5 V and VPP = 13.0 V during programming, with integrated product identification code (Manufacturer ID = 0x1E, Device ID = 0x0B) for automated programmer recognition. Standby current is specified at ≤20 µA (CMOS mode) and ≤100 µA (TTL mode) under industrial conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4,194,304 bits (512K × 8), fixed parallel ROM configuration for firmware storage |
| Read Access Time | 150 ns max at VCC = 2.7–3.6 V or 4.5–5.5 V - enables use in 6.7 MHz bus systems |
| Supply Voltage Range | 2.7–3.6 V (unregulated battery) or 4.5–5.5 V (standard 5V) - eliminates need for LDO in portable designs |
| Standby Current | ≤20 µA at VCC = 3.6 V, CE = VCC ± 0.3 V - extends battery life in always-on embedded systems |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade environmental reliability |
| Programming Speed | 100 µs/byte typical - reduces production programming cycle time vs. legacy 5V EPROMs |
| ESD Protection | 2,000 V HBM - enhances robustness during handling and board assembly |
Pinout & Package
AT27BV040-15VI is supplied in a 32-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-016 AE, with 1.27 mm pitch and body size 18.5 × 18.5 mm. Pin 1 is marked by index notch; package is lead-free and RoHS-compliant per Atmel documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing; all inputs CMOS/TTL compatible |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus; outputs drive TTL loads at 3.0 V and meet LVBO specs at 2.7 V |
| CE | Chip Enable | Active-low chip select; controls device activation and power state transition between active/standby |
| OE | Output Enable | Active-low output gate; enables high-impedance tri-state when deasserted to prevent bus contention |
| VCC | Power Supply | Main 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 0.1 µF ceramic capacitor to ground |
| GND | Ground Reference | Signal and power return; decoupling capacitors required per switching guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Voltage Read Operation | Operates natively at 2.7–3.6 V (battery) or 4.5–5.5 V (5V system) - no level-shifting needed |
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop - improves manufacturing throughput |
| Integrated Product ID Code | Manufacturer ID = 0x1E, Device ID = 0x0B - enables automatic algorithm selection in industry-standard programmers |
| JEDEC-Compatible Packages | 32J (PLCC), 32T (TSOP), 32V (VSOP) - drop-in replacement for AT27C040 in existing footprints |
| Low-Power Standby Mode | <1 µA typical ICC at 3V - critical for battery-backed real-time clock or watchdog firmware storage |
Applications
| Industrial PLC Firmware Storage | Portable Medical Device Boot ROM |
|---|---|
|
Use Scenario: Storing immutable boot firmware and calibration tables in DIN-rail mounted programmable logic controllers exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile program memory providing deterministic 150 ns read access during cold-start initialization sequences. Use Value: Industrial temperature rating (−40°C to +85°C) and <20 µA standby current ensure reliable operation across factory floor environments without thermal derating. |
Use Scenario: Holding certified bootloader and safety-critical diagnostic routines in handheld ECG monitors powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Low-voltage OTP ROM delivering TTL-level outputs directly to 3.3V microcontroller data bus without level shifters. Use Value: 2.7–3.6 V native operation eliminates DC-DC regulation, reducing BOM cost and PCB area while extending battery runtime. |
| Legacy System Field Upgrade Module | Automotive Diagnostic Tool Memory |
|
Use Scenario: Retrofitting aging industrial controllers with updated firmware via field-programmable EPROM modules using existing AT27C040 sockets. IC Role / Device Role / Timing Role: Pin- and function-compatible replacement for AT27C040 with identical programming protocol and JEDEC package footprint. Use Value: Same 32-pin PLCC/TSOP/VSOP packaging and Rapid™ algorithm compatibility enable zero-hardware-change upgrades. |
Use Scenario: Storing vehicle-specific diagnostic protocols and CAN message definitions in handheld OBD-II scanners used across multiple OEM platforms. IC Role / Device Role / Timing Role: Read-only memory mapped into microcontroller address space for fast lookup of protocol translation tables. Use Value: 150 ns access time supports real-time response to host PC queries; 2,000 V ESD protection withstands repeated connector insertion cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C040-15JC | Requires 5V ±10% only; no 2.7–3.6 V operation; same 150 ns speed and PLCC package | Lacks battery-voltage support; unsuitable for unregulated power rails | Select when system uses stable 5V supply and legacy compatibility is primary concern |
| MX29LV400CBTI-70G | Flash-based (reprogrammable), 70 ns access, 3.0 V core, but different command set and write endurance | Enables field updates; requires flash-specific driver and erase-cycle management | Select when firmware revision capability is required over one-time programmability |
Compared with AT27C040-15JC, the AT27BV040-15VI adds true battery-voltage operation and lower standby power, while MX29LV400CBTI-70G trades OTP simplicity for reprogrammability at faster speed - choice depends on whether field updates or ultra-low-power static storage dominates the design priority.
Availability
AT27BV040-15VI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, portable medical device boot ROM, legacy system field upgrade modules, and automotive diagnostic tool memory requiring stable component supply across extended lifecycle programs.
Supply support for AT27BV040-15VI 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 manufacturer specializing in microcontrollers, nonvolatile memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT27BV040-15VI belongs to Atmel's Battery-Voltage™ OTP EPROM product line, designed specifically to replace 5V EPROMs in portable and battery-operated systems without sacrificing speed or compatibility.
FAQ
What voltage ranges does the AT27BV040-15VI support during normal read operation?
The AT27BV040-15VI supports two distinct read voltage ranges: 2.7 V to 3.6 V for unregulated battery applications and 4.5 V to 5.5 V for standard 5 V systems. Both ranges deliver guaranteed 150 ns access time and full TTL/LVBO compatibility. The AT27BV040-15VI does not operate at intermediate voltages like 4.0 V or 3.8 V - only the two specified bands are validated.
Is the AT27BV040-15VI pin-compatible with the AT27C040 series?
Yes, the AT27BV040-15VI is fully pin-compatible and functionally equivalent to the AT27C040 in all JEDEC-standard packages (32J PLCC, 32T TSOP, 32V VSOP). Its pinout, address/data mapping, and CE/OE control logic match exactly, enabling direct socket replacement in existing designs without PCB modification.
What programming voltage and equipment does the AT27BV040-15VI require?
The AT27BV040-15VI requires VCC = 6.5 V ± 0.25 V and VPP = 13.0 V ± 0.25 V during programming, with a 100 µs CE pulse width per byte. It uses the same programming algorithms and equipment as the AT27C040, including industry-standard EPROM programmers that recognize its integrated ID code (0x1E/0x0B).
Does the AT27BV040-15VI support industrial temperature operation?
Yes, the AT27BV040-15VI is rated for −40°C to +85°C operation, as confirmed by its ordering suffix "I" and datasheet specifications. This includes full performance compliance for tACC = 150 ns, standby current ≤20 µA, and ESD/latchup immunity across the full range.
How does the AT27BV040-15VI achieve TTL-level outputs at 3.0 V supply?
The AT27BV040-15VI uses Atmel's proprietary low-voltage CMOS process to guarantee VOH ≥ 2.4 V and VOL ≤ 0.4 V at IOL = 2.0 mA and VCC = 3.0 V, meeting JEDEC LVTTL thresholds. This eliminates external level shifters when interfacing with 5 V microcontrollers or FPGAs, and is explicitly verified in the DC characteristics table.
AT27BV040-15VI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.488", 12.40mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EPROM
- Technology:
- EPROM - OTP
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 150 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:
- 32-VSOP
AT27BV040-15VI FAQ
1.How can I place an order for AT27BV040-15VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV040-15VI 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 AT27BV040-15VI reliable?
The price and inventory of AT27BV040-15VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV040-15VI is usually 5 days.
3.What payment methods are accepted for AT27BV040-15VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV040-15VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV040-15VI?
AT27BV040-15VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV040-15VI 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 AT27BV040-15VI?
For technical support, including AT27BV040-15VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV040-15VI requirements.
6.How does Aetrix verify that AT27BV040-15VI is sourced from the original manufacturer or authorized distributors?
All AT27BV040-15VI 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 AT27BV040-15VI meets industry standards.
7.What is the process for return or replacement of AT27BV040-15VI?
All AT27BV040-15VI units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV040-15VI, 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 AT27BV040-15VI part is unused and in its original packaging.
Return procedure for AT27BV040-15VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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