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Microchip Technology AT27BV040-15TI
- Part No.:
- AT27BV040-15TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT27BV040-15TI.pdf
- Description:
- IC EPROM 4MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,085
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Product details
Overview
AT27BV040-15TI 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 (2.7–3.6V or 4.5–5.5V), and industrial temperature range (−40°C to +85°C). It delivers TTL-compatible outputs at 3.0V and supports JEDEC-standard PLCC/TSOP/VSOP packages.
For engineers reviewing the AT27BV040-15TI datasheet, AT27BV040-15TI pinout, AT27BV040-15TI application, or AT27BV040-15TI equivalent, this device serves as a drop-in replacement for AT27C040 in dual-supply embedded systems requiring unregulated battery voltage support, rapid programming (100 µs/byte), and <1 µA typical standby current.
Technical Context
The AT27BV040-15TI implements a CMOS OTP memory architecture with two-line control (CE/OE), enabling bus contention avoidance in shared-data-bus systems. Its Rapid™ Programming Algorithm uses 100 µs CE pulses at VCC = 6.5V and VPP = 13.0V, with verification loops per byte.
It features integrated product identification (Manufacturer ID = 0x1E, Device ID = 0x0B), ESD protection ≥2,000V, and latchup immunity ≥200 mA. Output drive meets LVTTL/LVBO standards across both supply ranges, with VOH ≥2.4V at IOH = −400 µA (5V mode) and VOH ≥VCC − 0.2V (3V mode).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4,194,304-bit (512K × 8) OTP EPROM - fixed configuration, no write cycles after programming. |
| Read Access Time | 150 ns max at VCC = 2.7–3.6V or 4.5–5.5V - ensures compatibility with 6.7 MHz bus timing. |
| Supply Voltage Range | 2.7–3.6V or 4.5–5.5V - eliminates need for voltage regulation in portable 3V battery systems. |
| Standby Current | 20 µA max (CMOS CE), <1 µA typical at 3V - extends battery life in always-on embedded controllers. |
| Active Power Dissipation | 36 mW max at 5 MHz and VCC = 3.6V - reduces thermal load vs. 5V EPROMs by >80%. |
| Programming Speed | 100 µs/byte typical - cuts firmware update time in production programming fixtures. |
| Operating Temperature | −40°C to +85°C - qualified for industrial motor drives and automotive body-control modules. |
Pinout & Package
AT27BV040-15TI is supplied in a 32-lead TSOP (8 × 20 mm, JEDEC MO-142 BA), with pins arranged in dual rows. Pin 1 is marked by a notch or index mark on the package top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing; A0 least significant bit. |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus in read mode; high-impedance when OE or CE inactive. |
| CE | Chip Enable | Active-low chip select; enables internal logic and output drivers only when asserted. |
| OE | Output Enable | Active-low output gate; controls data bus drive without affecting internal state. |
| VCC | Power Supply | Primary supply for logic and I/O; must be applied before/with VPP during programming. |
| VPP | Programming Voltage | 13.0V ± 0.25V input required only during programming; tied to VCC otherwise. |
| GND | Ground Reference | Common return path for VCC and VPP; requires local 0.1 µF ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Voltage Read Operation | Operates natively at 2.7–3.6V or 4.5–5.5V - removes external regulator in mixed-voltage card designs. |
| Rapid™ Programming Algorithm | 100 µs/byte typical - reduces production programming time by >5× vs. legacy EPROMs. |
| Integrated Product ID Code | Manufacturer ID 0x1E and Device ID 0x0B - enables auto-detection and algorithm selection in universal programmers. |
| JEDEC-Compatible Packages | 32-lead TSOP (8 × 20 mm) - direct PCB footprint compatibility with AT27C040-15JC/TC/VC variants. |
| Low-Power Standby Mode | <1 µA typical ICC at 3V - critical for battery-backed real-time clock or configuration storage applications. |
Applications
| Industrial PLC Firmware Storage | Portable Medical Device Boot ROM |
|---|---|
Use Scenario: Storing fixed ladder-logic firmware in DIN-rail mounted programmable logic controllers operating in factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing deterministic 150 ns read access to instruction fetch bus during cold start and runtime execution. Use Value: Industrial temperature rating (−40°C to +85°C) and 2,000V ESD protection ensure reliability in electrically noisy plant-floor settings. |
Use Scenario: Holding calibrated sensor initialization code and safety-critical startup routines in handheld blood glucose meters powered by single-cell lithium batteries. IC Role / Device Role / Timing Role: Low-voltage OTP ROM delivering TTL-level outputs at 3.0V to interface directly with microcontroller data bus without level shifters. Use Value: 2.7–3.6V native operation eliminates DC-DC converter, reducing BOM cost and board area while extending battery runtime via <1 µA standby current. |
| Legacy Industrial Card Replacement | Automotive Body Control Module |
Use Scenario: Drop-in upgrade of obsolete AT27C040-based ISA expansion cards used in test equipment, maintaining identical pinout and timing. IC Role / Device Role / Timing Role: Pin-compatible EPROM replacement preserving existing PCB layout and firmware binary compatibility. Use Value: JEDEC-standard 32-lead TSOP package and identical A0–A18/O0–O7/CE/OE pin mapping enable zero-change hardware migration. |
Use Scenario: Storing vehicle-specific configuration data (e.g., door lock logic, mirror position presets) in 12V automotive systems with local 3.3V regulation. IC Role / Device Role / Timing Role: Configuration memory accessed during ignition-on initialization sequence, requiring guaranteed read stability over temperature and vibration. Use Value: 200 mA latchup immunity and −40°C to +85°C qualification prevent corruption during load-dump transients and under-hood thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C040-15TI | 5V-only operation (4.5–5.5V); no 3V support; same 150 ns tACC, identical pinout and ID code. | Requires regulated 5V supply; unsuitable for unregulated battery systems. | Select when system already uses 5V rails and legacy tooling mandates exact AT27C040 form factor. |
| MX29LV400CTTI-15G | Flash-based (1M × 4 or 512K × 8), 3V-only (2.7–3.6V), 150 ns access, but supports erase/write cycles. | Enables field firmware updates; lacks OTP security and requires command sequences. | Choose for reprogrammable use cases where data integrity during power loss is managed externally. |
Compared with AT27C040-15TI, the AT27BV040-15TI adds true 3V battery operation and lower standby current, while MX29LV400CTTI-15G trades OTP permanence for field-upgradability-making AT27BV040-15TI optimal for cost-sensitive, battery-powered, firmware-immutable designs.
Availability
AT27BV040-15TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, portable medical device boot ROM, and legacy industrial card replacement requiring stable component supply and long-term lifecycle support.
Supply support for AT27BV040-15TI 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.
The AT27BV040 product line was designed for battery-powered and dual-voltage embedded systems needing reliable, low-power OTP memory with JEDEC-standard compatibility and rapid programming.
FAQ
What is the maximum read access time specified for AT27BV040-15TI?
The AT27BV040-15TI has a maximum read access time (tACC) of 150 ns under all valid operating conditions - including both 2.7–3.6V and 4.5–5.5V supply ranges and across the full industrial temperature range (−40°C to +85°C). This value is guaranteed and 100% tested per the datasheet AC characteristics table.
Can AT27BV040-15TI operate with an unregulated 3V battery supply?
Yes, AT27BV040-15TI is specifically designed for unregulated battery operation, supporting a continuous VCC range of 2.7V to 3.6V without external regulation. Its TTL-compatible outputs at 3.0V allow direct interfacing with 5V-tolerant microcontrollers, eliminating level-shifting circuitry in portable systems.
Is AT27BV040-15TI pin-compatible with AT27C040-15TI?
Yes, AT27BV040-15TI is fully pin-compatible with AT27C040-15TI in all JEDEC-standard packages (PLCC, TSOP, VSOP), sharing identical pin functions, numbering, and physical dimensions. The AT27BV040-15TI retains the same 32-pin layout and signal assignments (A0–A18, O0–O7, CE, OE, VCC, GND, VPP).
What programming voltage is required for AT27BV040-15TI?
AT27BV040-15TI requires VPP = 13.0V ± 0.25V during programming, applied simultaneously with or after VCC = 6.5V ± 0.25V. VPP must be removed simultaneously with or after VCC. A 0.1 µF capacitor between VPP and GND is mandatory to suppress programming transients.
Does AT27BV040-15TI support product identification codes?
Yes, AT27BV040-15TI implements an Integrated Product Identification Code: Manufacturer ID = 0x1E and Device ID = 0x0B, accessible by setting A9 = 12.0V and toggling A0 while holding all other address lines low. This allows automatic detection and algorithm selection in industry-standard programming equipment.
AT27BV040-15TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm 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-TSOP
AT27BV040-15TI FAQ
1.How can I place an order for AT27BV040-15TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV040-15TI 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 AT27BV040-15TI reliable?
The price and inventory of AT27BV040-15TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV040-15TI is usually 5 days.
3.What payment methods are accepted for AT27BV040-15TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV040-15TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV040-15TI?
AT27BV040-15TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV040-15TI 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 AT27BV040-15TI?
For technical support, including AT27BV040-15TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV040-15TI requirements.
6.How does Aetrix verify that AT27BV040-15TI is sourced from the original manufacturer or authorized distributors?
All AT27BV040-15TI 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 AT27BV040-15TI meets industry standards.
7.What is the process for return or replacement of AT27BV040-15TI?
All AT27BV040-15TI units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV040-15TI, 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 AT27BV040-15TI part is unused and in its original packaging.
Return procedure for AT27BV040-15TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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