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Microchip Technology AT27BV040-15TC
- Part No.:
- AT27BV040-15TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT27BV040-15TC.pdf
- Description:
- IC EPROM 4MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,076
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Product details
Overview
AT27BV040-15TC 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 JEDEC-standard 32-lead TSOP packaging. It delivers TTL-compatible outputs at 3.0 V and supports rapid programming at 100 µs/byte.
For engineers reviewing the AT27BV040-15TC datasheet, AT27BV040-15TC pinout, AT27BV040-15TC application, or AT27BV040-15TC equivalent, key selection criteria include unregulated battery voltage support (2.7–3.6 V), 150 ns read timing, industrial temperature range (−40°C to +85°C), and compatibility with standard AT27C040 programming infrastructure.
Technical Context
The AT27BV040-15TC 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 seamless operation across 3V and 5V host environments without level-shifting circuitry.
It uses Atmel's Rapid™ Programming Algorithm with 100 µs CE pulses and integrated product identification (Manufacturer ID = 0x1E, Device ID = 0x0B), ensuring compatibility with industry-standard programmers. Programming requires VCC = 6.5 V and VPP = 13.0 V, while read/standby modes operate within 2.7–3.6 V or 4.5–5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4,194,304-bit (512K × 8) OTP EPROM - fixed, non-erasable storage for firmware boot code or configuration data |
| Read Access Time | 150 ns max at VCC = 2.7–3.6 V or 4.5–5.5 V - meets timing for 6.67 MHz system clocks in embedded controllers |
| Supply Voltage Range | 2.7–3.6 V (unregulated battery) or 4.5–5.5 V (standard 5V) - eliminates need for LDO regulation in portable designs |
| Standby Current | 20 µA max at VCC = 3.6 V (CMOS CE mode) - enables multi-year battery life in always-on monitoring devices |
| Active Power Dissipation | 36 mW max at 5 MHz and VCC = 3.6 V - reduces thermal load in dense PCB layouts |
| Programming Speed | 100 µs/byte typical - cuts firmware update time by >5× vs. legacy 5V EPROMs |
| ESD/Latchup Rating | 2,000 V HBM ESD protection; 200 mA latchup immunity - ensures robustness in field-deployed industrial equipment |
Pinout & Package
AT27BV040-15TC is housed in a 32-lead TSOP (8 × 20 mm, JEDEC MO-142 BA), surface-mount package compatible with automated assembly. Pin 1 is marked by a notch on the top edge.
| 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 (output-only in read mode); TTL-compatible at 3.0 V |
| CE | Chip Enable | Active-low chip select; controls device activation and power state transitions |
| OE | Output Enable | Active-low output gate; enables data bus drivers independently of CE for bus sharing |
| 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 programming supply; internally isolated during read/standby; requires 0.1 µF decoupling to ground |
| GND | Ground Reference | Signal and power return path; requires local 0.1 µF ceramic + remote 4.7 µF bulk capacitor per datasheet layout guidance |
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 rail) - eliminates external voltage translators in mixed-supply systems |
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop - reduces production programming cycle time and improves yield |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device ID (0x0B) readable via A9/VH and A0 toggle - enables automatic algorithm selection in universal programmers |
| JEDEC-Standard Pinout & Timing | Pin-for-pin and timing-compatible with AT27C040 - allows drop-in replacement in existing 5V designs with no PCB changes |
| Low-Power Standby Mode | Typical standby current <1 µA at 3V - extends battery life in sleep-mode IoT endpoints and portable instrumentation |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot ROM |
|---|---|
Use Scenario: Storing immutable boot firmware and safety-critical calibration tables in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Non-volatile boot memory providing deterministic startup sequence and fail-safe recovery code. Use Value: 150 ns access time ensures fast initialization; industrial temperature rating (−40°C to +85°C) guarantees reliability in harsh cabinet environments. |
Use Scenario: Holding certified bootloader and regulatory-compliant diagnostic routines in portable ultrasound or infusion pump controllers. IC Role / Device Role / Timing Role: One-time programmable ROM preventing unauthorized firmware modification post-certification. Use Value: Unregulated 2.7–3.6 V operation extends single-cell Li-ion battery runtime; 2,000 V ESD protection withstands clinical handling stress. |
| Automotive Body Control Module | Point-of-Sale Terminal Configuration |
Use Scenario: Storing vehicle-specific configuration maps and CAN protocol stack initialization parameters in BCMs for aftermarket integration. IC Role / Device Role / Timing Role: OTP memory used for secure, tamper-resistant parameter storage not requiring field updates. Use Value: Dual-voltage compatibility allows reuse across 3.3 V microcontroller domains and legacy 5 V diagnostic interfaces. |
Use Scenario: Embedding country-specific tax tables, language strings, and payment protocol keys in retail POS terminals shipped globally. IC Role / Device Role / Timing Role: Fixed-content ROM delivering deterministic, revision-controlled data without flash wear-out concerns. Use Value: Rapid programming enables high-throughput pre-load at manufacturing; TSOP package supports compact, cost-optimized PCB layouts. |
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 | 5V-only operation (4.5–5.5 V); no 2.7–3.6 V support; same 150 ns speed and PLCC package | Requires regulated 5V supply; unsuitable for battery-powered systems | Select when legacy 5V infrastructure exists and battery operation is unnecessary |
| MX29LV400CBTI-15G | 3V Flash (not OTP); 150 ns access; 48-pin TSOP; supports erase/rewrite; higher write endurance | Enables field firmware updates but introduces complexity in secure boot validation | Select when reprogrammability is required and security model permits flash-based updates |
Compared with AT27C040-15JC, the AT27BV040-15TC adds unregulated battery support and lower standby current; compared with MX29LV400CBTI-15G, it offers simpler, more secure one-time programming with no erase-cycle management overhead.
Availability
AT27BV040-15TC is available at Aetrix Electronics and suitable for industrial control, medical instrumentation, automotive body electronics, and point-of-sale terminal applications requiring stable component supply and long-term lifecycle assurance.
Supply support for AT27BV040-15TC 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, non-volatile memory, and secure authentication ICs for embedded systems.
The AT27BV040-15TC belongs to Atmel's Battery-Voltage™ OTP EPROM family, designed specifically for portable and battery-operated equipment where supply regulation is impractical and firmware integrity is critical.
FAQ
What voltage ranges does the AT27BV040-15TC support during normal read operation?
The AT27BV040-15TC supports two distinct read voltage ranges: 2.7 V to 3.6 V for unregulated battery operation and 4.5 V to 5.5 V for standard 5 V systems. It does not operate at intermediate voltages like 4.0 V. Both ranges deliver guaranteed 150 ns access time and full TTL/LVBO compatibility, making the AT27BV040-15TC ideal for dual-voltage host platforms such as PCMCIA cards or modular industrial I/O modules.
Is the AT27BV040-15TC pin-compatible with the AT27C040 series?
Yes - the AT27BV040-15TC is JEDEC-standard pinout compatible with the AT27C040 family, including identical pin assignments for A0–A18, O0–O7, CE, OE, VCC, VPP, and GND. This allows direct PCB-level substitution in existing AT27C040-15JC or AT27C040-15PC designs, provided the 3.3 V supply and decoupling requirements are met. The AT27BV040-15TC retains the same 32-lead TSOP footprint as the AT27C040-15TC variant.
What programming voltage and equipment are required for the AT27BV040-15TC?
The AT27BV040-15TC requires VCC = 6.5 V ± 0.25 V and VPP = 13.0 V ± 0.25 V during programming, with strict sequencing: VCC must be applied simultaneously with or before VPP and removed simultaneously with or after VPP. Standard AT27C040-compatible programmers (e.g., BP Microsystems, Xeltek, Data I/O) recognize its Integrated Product ID (0x1E/0x0B) and apply the correct Rapid™ algorithm automatically. No special hardware is needed beyond compliant 5V/12V programmer supplies.
Does the AT27BV040-15TC support industrial temperature operation?
Yes - the AT27BV040-15TC is rated for industrial temperature range operation from −40°C to +85°C, as confirmed by the "I" suffix in its ordering code (e.g., AT27BV040-15TI). This rating applies across both voltage ranges and all functional modes (read, standby, programming). The device undergoes full characterization at temperature extremes, including 150 ns access time validation and 20 µA max standby current compliance at −40°C and +85°C.
How does the AT27BV040-15TC achieve TTL-level outputs while operating at 3.0 V?
The AT27BV040-15TC uses proprietary CMOS output driver design that produces VOH ≥ 2.4 V at IOH = −400 µA and VOL ≤ 0.4 V at IOL = 2.1 mA when VCC = 3.0 V - meeting TTL logic thresholds despite the sub-5V supply. This eliminates external level shifters in mixed-voltage systems. The specification is verified across process corners and temperature, and the AT27BV040-15TC maintains this compatibility even at minimum VCC = 2.7 V, where VOH remains ≥ VCC − 0.2 V per datasheet.
AT27BV040-15TC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT27BV040-15TC FAQ
1.How can I place an order for AT27BV040-15TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV040-15TC 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 AT27BV040-15TC reliable?
The price and inventory of AT27BV040-15TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV040-15TC is usually 5 days.
3.What payment methods are accepted for AT27BV040-15TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV040-15TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV040-15TC?
AT27BV040-15TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV040-15TC 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 AT27BV040-15TC?
For technical support, including AT27BV040-15TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV040-15TC requirements.
6.How does Aetrix verify that AT27BV040-15TC is sourced from the original manufacturer or authorized distributors?
All AT27BV040-15TC 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 AT27BV040-15TC meets industry standards.
7.What is the process for return or replacement of AT27BV040-15TC?
All AT27BV040-15TC units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV040-15TC, 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 AT27BV040-15TC part is unused and in its original packaging.
Return procedure for AT27BV040-15TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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