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Microchip Technology AT49BV001AN-55TI
- Part No.:
- AT49BV001AN-55TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV001AN-55TI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,550
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Product details
Overview
AT49BV001AN-55TI from Atmel is a 1 Mbit (128K × 8) single-supply 2.7–3.6 V in-system reprogrammable Flash memory IC with 55 ns read access time, sector-erasable architecture (16K-byte boot block + two 8K-byte parameter blocks + 96K-byte main memory), and hardware data protection. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring field-upgradable firmware.
For engineers reviewing the AT49BV001AN-55TI datasheet, AT49BV001AN-55TI pinout, AT49BV001AN-55TI application, or AT49BV001AN-55TI equivalent, key selection criteria include its 55 ns read timing, boot-block lockout capability, 30 µs/byte programming, 3-second erase cycle, and compatibility with standard microprocessor bus interfaces using CE/OE/WE control.
Technical Context
The AT49BV001AN-55TI implements a command-register-based architecture for byte programming and sector/chip erase, using six-byte software command sequences (e.g., 555H/AAH → AAH/55H → 555H/80H → 555H/AAH → AAH/55H → 555H/40H to enable boot block lockout). Its internal logic supports DATA polling (I/O7 complement) and toggle-bit detection (I/O6 toggling) for end-of-operation signaling.
It features dual-line chip select (CE) and output enable (OE) control to prevent bus contention, VCC sense circuitry inhibiting programming below 1.8 V, and noise filtering rejecting sub-15 ns pulses on WE/CE. The RESET pin is NC on this variant, eliminating reset-triggered boot block override functionality present in other family members.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits |
| Read Access Time | 55 ns - enables direct interface with 18 MHz microcontrollers without wait states |
| Supply Voltage | 2.7–3.6 V - operates from single battery or regulated low-voltage rail |
| Byte Programming Time | 30 µs typical - supports efficient incremental firmware updates |
| Erase Cycle Time | 3 seconds max - full-chip or sector-erase completed within deterministic timeframe |
| End-of-Operation Detection | DATA polling (I/O7) and toggle-bit (I/O6) - eliminates need for fixed-timing delays in host firmware |
| Write Endurance | 10,000 program/erase cycles - validated lifetime for embedded control applications |
| Standby Current | 50 µA CMOS - ultra-low power retention during system sleep modes |
Pinout & Package
AT49BV001AN-55TI is supplied in a 32-lead Thin Small Outline Package (TSOP, Type I, 8 × 20 mm, package code 32T), compliant with JEDEC MO-142 BD. Pin 9 is NC (no connect); all other pins match standard TSOP Flash pinout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing space |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface compatible with 8-bit microcontrollers and bus controllers |
| CE | Chip Enable | Active-low chip select; deassertion places outputs in high-impedance state |
| OE | Output Enable | Active-low output control; used with CE to manage bus contention |
| WE | Write Enable | Active-low write strobe; latches address/data during programming/erase commands |
| RESET | No Connect (NC) | Pin 9 is unconnected - boot block override via 12V on RESET is not supported |
| VCC | Power Supply | 2.7–3.6 V supply input; powers core logic and I/O buffers |
| GND | Ground | Reference return path for all signals and power |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16K-byte protected region (00000H–03FFFH) prevents accidental overwrite of bootloader code |
| Sector-Erasable Architecture | Independent erase of two 8K-byte parameter blocks and two main memory blocks (32K/64K) enables granular firmware updates |
| Hardware Data Protection | VCC sense, noise filtering (<15 ns pulse rejection), and CE/OE/WE inhibit logic prevent spurious writes |
| Standard Microprocessor Interface | CE/OE/WE timing compatible with common 8-bit MCUs - no external glue logic required |
| Low-Power Operation | 15 mA active current and 50 µA standby current support battery-powered and energy-conscious designs |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing field-upgradable ladder logic and I/O mapping tables in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile program memory providing fast 55 ns read access for real-time scan execution. Use Value: Sector erase allows updating only modified function blocks without disrupting operational firmware in the boot block. |
Use Scenario: Retaining calibrated sensor offsets, user preferences, and safety-critical configuration parameters in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, low-power configuration storage with hardware write protection against EMI-induced corruption. Use Value: 50 µA standby current extends battery life; boot block lockout ensures bootloader integrity across 10,000+ update cycles. |
| Automotive Body Control Module | Networking Equipment Boot Image |
Use Scenario: Holding firmware for door module microcontrollers subject to automotive temperature (-40°C to +85°C) and vibration requirements. IC Role / Device Role / Timing Role: Industrial-grade Flash memory interfacing directly with 8-bit automotive MCUs via standard bus protocol. Use Value: 2.7–3.6 V operation tolerates vehicle battery fluctuations; 3-second erase enables rapid over-the-air (OTA) patch deployment. |
Use Scenario: Storing primary boot loader and recovery image in managed Ethernet switches and routers. IC Role / Device Role / Timing Role: Dual-sector protected storage where boot block holds immutable startup code and parameter blocks hold runtime-configurable settings. Use Value: Command-based sector erase isolates recovery image updates from active configuration changes, minimizing risk of bricking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF010-55-4C-NHE | 55 ns access, 1 Mbit, 3.0–3.6 V supply; lacks boot block lockout and uses different command set | Requires host firmware adaptation for erase/program sequences; no hardware-protected boot region | Choose when cost sensitivity outweighs need for secure bootloader protection |
| MX29LV010CTTI-55G | 55 ns access, 1 Mbit, 3.0–3.6 V; includes boot block protection but uses 12V RESET override (not NC) | Supports 12V boot block reprogramming - incompatible with AT49BV001AN-55TI's NC RESET pin | Prefer only if system design accommodates 12V generation and requires boot block reprogrammability |
Compared with SST39VF010-55-4C-NHE and MX29LV010CTTI-55G, the AT49BV001AN-55TI uniquely combines NC RESET (simplifying layout), factory-defined boot block lockout without external voltage, and Atmel's proven command-set compatibility - making it optimal for cost-constrained, safety-aware embedded systems where bootloader immutability is mandatory.
Availability
AT49BV001AN-55TI is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics, automotive body control modules, and networking equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT49BV001AN-55TI 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, Flash memory, and secure authentication devices.
The AT49BV001AN-55TI belongs to Atmel's Battery-Voltage™ Flash memory product line, designed specifically for low-voltage, in-system reprogrammable storage in resource-constrained embedded systems.
FAQ
What is the operating voltage range for the AT49BV001AN-55TI?
The AT49BV001AN-55TI operates from a single 2.7 V to 3.6 V supply. This range supports direct connection to lithium-ion battery rails and low-dropout regulators without level-shifting. Operation below 2.7 V disables programming functions via internal VCC sense circuitry, and voltages above 3.6 V exceed absolute maximum ratings and may cause permanent damage. The AT49BV001AN-55TI does not require 5 V or 12 V for any operation.
Does the AT49BV001AN-55TI support boot block protection, and how is it enabled?
Yes, the AT49BV001AN-55TI includes a 16K-byte boot block (addresses 00000H–03FFFH) with programmable lockout. It is enabled by executing a six-cycle command sequence: 555H/AAH → AAH/55H → 555H/80H → 555H/AAH → AAH/55H → 555H/40H. Once activated, the boot block becomes permanently write-protected under normal 2.7–3.6 V conditions. The AT49BV001AN-55TI has NC on the RESET pin, so 12V override is unavailable.
What package type is used for the AT49BV001AN-55TI, and what are its key mechanical dimensions?
The AT49BV001AN-55TI uses a 32-lead Thin Small Outline Package (TSOP, Type I), designated 32T per Atmel's ordering guide. Its footprint measures 20.0 mm × 8.0 mm (max), with 0.50 mm lead pitch. Pin 1 identifier is marked by a beveled corner; pin 9 is NC. The package complies with JEDEC MO-142 BD and is optimized for automated surface-mount assembly in high-density PCB layouts.
How does the AT49BV001AN-55TI signal completion of a programming or erase operation?
The AT49BV001AN-55TI provides two hardware methods: DATA polling (reading the programmed byte returns its complement on I/O7 until completion, then true data) and toggle-bit detection (I/O6 toggles between 0 and 1 during operation and stabilizes upon completion). Both methods allow host firmware to poll asynchronously without fixed timing loops. The AT49BV001AN-55TI does not require external clocks or status registers for operation confirmation.
Can the AT49BV001AN-55TI be used as a direct replacement for the AT49BV001A-55TI?
No - while both share identical timing, density, and voltage specs, the AT49BV001AN-55TI has NC on RESET (pin 9), whereas the AT49BV001A-55TI uses that pin for 12V boot block override. Substituting them requires verifying that the host system neither drives nor relies on RESET functionality. The AT49BV001AN-55TI is not pin-compatible with variants featuring functional RESET, and its boot block protection is irreversible under standard voltage conditions.
AT49BV001AN-55TI 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:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 50µs
- Access Time:
- 55 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT49BV001AN-55TI FAQ
1.How can I place an order for AT49BV001AN-55TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV001AN-55TI 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 AT49BV001AN-55TI reliable?
The price and inventory of AT49BV001AN-55TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV001AN-55TI is usually 5 days.
3.What payment methods are accepted for AT49BV001AN-55TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV001AN-55TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV001AN-55TI?
AT49BV001AN-55TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV001AN-55TI 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 AT49BV001AN-55TI?
For technical support, including AT49BV001AN-55TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV001AN-55TI requirements.
6.How does Aetrix verify that AT49BV001AN-55TI is sourced from the original manufacturer or authorized distributors?
All AT49BV001AN-55TI 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 AT49BV001AN-55TI meets industry standards.
7.What is the process for return or replacement of AT49BV001AN-55TI?
All AT49BV001AN-55TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV001AN-55TI, 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 AT49BV001AN-55TI part is unused and in its original packaging.
Return procedure for AT49BV001AN-55TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV001AN-55TI Tags
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