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Microchip Technology AT49BV001ANT-55TI
- Part No.:
- AT49BV001ANT-55TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV001ANT-55TI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,815
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Product details
Overview
AT49BV001ANT-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, 30 µs/byte programming, and sector-erasable architecture including one 16K-byte boot block, two 8K-byte parameter blocks, and two main memory blocks (32K + 64K bytes). It supports DATA polling and toggle-bit erase/program status detection and is used in embedded firmware storage for industrial microcontroller systems requiring field-upgradable code.
For engineers reviewing the AT49BV001ANT-55TI datasheet, AT49BV001ANT-55TI pinout, AT49BV001ANT-55TI application, or AT49BV001ANT-55TI equivalent, this page delivers verified electrical specs, PLCC-32 and TSOP-32 package details, boot-block lockout behavior, hardware data protection mechanisms, and real-world use cases in secure boot and parameter retention systems.
Technical Context
The AT49BV001ANT-55TI implements a standard parallel Flash interface with CE/OE/WE control logic and supports EPROM-like read operation timing. Its internal program controller handles byte programming and sector/chip erase via six-cycle command sequences without external high-voltage circuitry.
It features dual-sector erase capability - independent erasure of two 8K-byte parameter blocks and two main memory blocks - plus boot-block lockout with 12V RESET override (not available on AN variant). The device uses CMOS standby current <50 µA and active current 15 mA at 5 MHz, with VCC sense, noise filtering, and write-inhibit logic for hardware data protection.
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 replacement for 55 ns EPROMs in legacy 8-bit bus systems |
| Supply Voltage | 2.7–3.6 V - operates from single battery or regulated low-voltage rail, no 5 V required |
| Byte Programming Time | 30 µs typical - allows rapid field updates without system downtime |
| Erase Cycle Time | 3 seconds max for full chip - supports fast firmware recovery during maintenance windows |
| Endurance | 10,000 program/erase cycles - suitable for infrequent but critical firmware revisions |
| Operating Temperature | −40°C to +85°C - qualified for industrial embedded environments |
Pinout & Package
AT49BV001ANT-55TI is available in 32-pin PLCC (32J) and TSOP (32T) packages. Pin 1 identifier is marked on top view; pin 9 (TSOP) and pin 1 (PLCC) are NC for AT49BV001ANT variants. RESET is functional and supports 12V override for boot-block reprogramming.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing space |
| I/O0–I/O7 | Data Inputs/Outputs | 8-bit bidirectional data bus compatible with standard microprocessor data buses |
| CE | Chip Enable | Active-low chip select; enables device for read/write when OE and WE conditions met |
| OE | Output Enable | Active-low output gate; controls data bus drive to prevent contention during shared-bus operation |
| WE | Write Enable | Active-low write strobe; latches address/data and initiates command sequences |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-Z outputs; 12V input enables boot-block override |
| VCC / GND | Power Supply | Single 2.7–3.6 V supply with CMOS standby current <50 µA |
| NC | No Connect | Pin 1 (PLCC) and Pin 9 (TSOP) are unconnected - must be left floating or tied to ground per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16K-byte protected region (1C000H–1FFFFH) prevents accidental overwrite of secure boot code |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulse rejection), and CE/OE/WE inhibit logic |
| DATA Polling & Toggle Bit | I/O7 complement and I/O6 toggling provide real-time, bus-compatible program/erase completion signaling |
| Sector Erase Architecture | Independent erasure of two 8K-byte parameter blocks and two main memory blocks minimizes update latency |
| In-System Reprogrammability | No high-voltage programmer needed - standard 5V-level commands execute all operations |
Applications
| Industrial PLC Firmware Storage | Secure Boot Loader Memory |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile parallel Flash memory providing boot code and runtime parameter storage with 55 ns read access for deterministic startup timing. Use Value: Enables field firmware upgrades without hardware rework; boot-block lockout ensures bootloader integrity across 10,000+ update cycles. |
Use Scenario: Hosting immutable boot loader code in safety-critical embedded systems where unauthorized modification must be physically prevented. IC Role / Device Role / Timing Role: Secure boot memory with hardware-enforced write protection on 16K-byte boot sector (1C000H–1FFFFH). Use Value: Prevents corruption of first-stage boot code; 12V RESET override allows authorized reprogramming while maintaining default security posture. |
| Parameter Configuration Storage | Legacy System EPROM Replacement |
Use Scenario: Retaining calibration data, user preferences, and operational thresholds in medical diagnostic equipment requiring long-term data retention. IC Role / Device Role / Timing Role: Dual 8K-byte parameter blocks allow A/B swapping for atomic configuration updates without runtime interruption. Use Value: Sector-erasable architecture enables safe parameter revision; low 50 µA standby current extends battery-backed operation life. |
Use Scenario: Direct drop-in replacement for obsolete 27C010 or 27C020 EPROMs in legacy 8-bit microcontroller designs. IC Role / Device Role / Timing Role: Pin- and timing-compatible Flash memory with identical CE/OE/WE control and 55 ns access matching EPROM spec. Use Value: Eliminates UV erasers and programmers; supports in-circuit reprogramming using existing board-level control logic. |
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 | 512K × 16 organization; 3.0–3.6 V supply; 55 ns access; no boot-block lockout | Requires data bus width adaptation; lacks dedicated secure boot sector | Preferred for cost-sensitive 16-bit bus systems where boot protection is handled externally |
| MX29LV010CTTI-55G | 1 Mbit × 8; 3.0–3.6 V; 55 ns access; includes CFI query mode and 8K-byte boot sectors | CFI support simplifies auto-detection in generic flash programmers; boot sectors differ in size and address mapping | Recommended when system requires standardized flash interrogation or multi-vendor toolchain compatibility |
Compared with SST39VF010-55-4C-NHE and MX29LV010CTTI-55G, the AT49BV001ANT-55TI uniquely provides 12V RESET-based boot-block override and a fixed 16K-byte protected region at 1C000H–1FFFFH - critical for legacy industrial systems requiring field-recoverable secure boot without firmware redesign.
Availability
AT49BV001ANT-55TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, secure boot loader memory, and legacy EPROM replacement applications requiring stable component supply across extended product lifecycles.
Supply support for AT49BV001ANT-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, nonvolatile memory, and secure authentication devices.
The AT49BV001ANT-55TI belongs to Atmel's Battery-Voltage™ Flash memory family, designed specifically for low-voltage in-system reprogrammability in industrial and embedded systems where power efficiency and field upgradeability are essential.
FAQ
What is the boot block address range for AT49BV001ANT-55TI?
The boot block for AT49BV001ANT-55TI occupies address range 1C000H to 1FFFFH (16K bytes). This differs from the base AT49BV001A(N) version, which locates the boot block at 00000H–03FFFH. The relocated boot sector enables flexible memory mapping in systems requiring top-of-memory boot code placement.
Does AT49BV001ANT-55TI support 12V RESET override for boot block programming?
Yes, AT49BV001ANT-55TI supports 12V ± 0.5V applied to the RESET pin during chip erase, sector erase, or byte programming to temporarily disable boot block lockout. This feature is explicitly documented for the AT49BV001A(N)T variant and is not available on AT49BV001AN(T) parts.
What package types are offered for AT49BV001ANT-55TI?
AT49BV001ANT-55TI is available in two industry-standard packages: 32-pin PLCC (32J) and 32-pin TSOP (32T). Both packages operate over the industrial temperature range (−40°C to +85°C) and share identical pin functions, with NC pins at position 1 (PLCC) and position 9 (TSOP).
How does hardware data protection work in AT49BV001ANT-55TI?
AT49BV001ANT-55TI implements three hardware protections: (1) VCC sense disables programming if supply drops below ~1.8 V; (2) any of OE low, CE high, or WE high inhibits write cycles; (3) input noise filter rejects pulses shorter than 15 ns on WE or CE. These ensure robustness against power glitches and signal noise.
Can AT49BV001ANT-55TI be used as a direct replacement for AT49BV001A-55TI?
No - AT49BV001ANT-55TI is not a direct replacement for AT49BV001A-55TI. While both share 55 ns access and same package options, the "T" suffix denotes relocated boot block (1C000H–1FFFFH vs. 00000H–03FFFH) and functional RESET pin with 12V override, requiring firmware and address map validation before substitution.
AT49BV001ANT-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
AT49BV001ANT-55TI FAQ
1.How can I place an order for AT49BV001ANT-55TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV001ANT-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 AT49BV001ANT-55TI reliable?
The price and inventory of AT49BV001ANT-55TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV001ANT-55TI is usually 5 days.
3.What payment methods are accepted for AT49BV001ANT-55TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV001ANT-55TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV001ANT-55TI?
AT49BV001ANT-55TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV001ANT-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 AT49BV001ANT-55TI?
For technical support, including AT49BV001ANT-55TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV001ANT-55TI requirements.
6.How does Aetrix verify that AT49BV001ANT-55TI is sourced from the original manufacturer or authorized distributors?
All AT49BV001ANT-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 AT49BV001ANT-55TI meets industry standards.
7.What is the process for return or replacement of AT49BV001ANT-55TI?
All AT49BV001ANT-55TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV001ANT-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 AT49BV001ANT-55TI part is unused and in its original packaging.
Return procedure for AT49BV001ANT-55TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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