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Microchip Technology AT49BV001ANT-55VI
- Part No.:
- AT49BV001ANT-55VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT49BV001ANT-55VI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,822
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Product details
Overview
AT49BV001ANT-55VI 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 industrial temperature range (−40°C to +85°C) and is used in embedded firmware storage for microcontroller-based systems requiring field-upgradable code.
For engineers reviewing the AT49BV001ANT-55VI datasheet, AT49BV001ANT-55VI pinout, AT49BV001ANT-55VI application, or AT49BV001ANT-55VI equivalent, key selection considerations include boot-block lockout capability, 55 ns read timing compliance, VSOP-32 (8 × 14 mm) package compatibility, DATA polling/Toggle Bit erase-program status detection, and hardware write protection under 1.8 V VCC sense.
Technical Context
The AT49BV001ANT-55VI implements a standard parallel Flash interface with CE/OE/WE control logic, supporting EPROM-like read operation and command-based byte/sector/chip erase and programming. Its internal program controller handles timing generation, eliminating need for external clocks during erase (max 5 s) or byte program (typ. 30 µs) cycles.
It features dual-level hardware data protection: VCC sense disables programming below 1.8 V, and noise filtering rejects sub-15 ns pulses on WE/CE. The RESET pin enables system reset and - uniquely in the T variant - 12 V override of boot block lockout, a capability absent in AN and A variants.
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 - meets fast boot code fetch timing in 20 MHz+ microcontroller systems |
| Byte Programming Time | 30 µs typical - enables rapid field updates without long blocking delays |
| Erase Cycle Time | 3 seconds max for full chip or sector - supports deterministic firmware recovery sequences |
| Supply Voltage Range | 2.7 V to 3.6 V - operates directly from single Li-ion or regulated 3.3 V rails |
| Active Current | 15 mA at 5 MHz - compatible with low-power embedded power budgets |
| Standby Current | 50 µA CMOS - enables ultra-low quiescent power in sleep-mode systems |
| Endurance | 10,000 program/erase cycles - validated for frequent firmware revision in industrial controllers |
Pinout & Package
AT49BV001ANT-55VI is supplied in a 32-lead Very Thin Small Outline Package (VSOP), 8 mm × 14 mm body, JEDEC MO-142 BA compliant, with gull-wing leads and pin 1 identifier notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A11–A16 don't care in some commands |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read output |
| OE | Output Enable | Active-low output gate; controls I/O0–I/O7 tri-state behavior independent of CE |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit data path for read, program, and identification modes; supports DATA polling on I/O7 and Toggle Bit on I/O6 |
| RESET | Reset Input | Active-low system reset; 12 V input enables boot block reprogramming override (T variant only) |
| VCC | Power Supply | 2.7–3.6 V core supply; internal regulation ensures stable operation across voltage range |
| GND | Ground | Reference return for all signals and power; decoupling required per high-speed Flash layout guidelines |
| NC | No Connect | Pin 9 in TSOP/VSOP packages - must remain unconnected; not bonded internally |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16K-byte sector (1C000H–1FFFFH) permanently protected after command sequence; prevents accidental overwrite of secure boot code |
| Data Polling & Toggle Bit | I/O7 complement indicates programming completion; I/O6 toggling signals active erase/program - eliminates need for fixed delay timers in host firmware |
| Sector-Erasable Architecture | Independent erasure of boot block, two 8K parameter blocks, and two main memory blocks (32K/64K) - enables modular firmware updates without full chip erase |
| Hardware Write Protection | VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulse rejection), and control-line gating (OE low/CE high/WE high blocks writes) |
| 12 V RESET Override | Applying 12.0 V ± 0.5 V to RESET pin during erase/program re-enables boot block modification - critical for recovery in locked systems (T variant only) |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Nonvolatile code storage with 55 ns read access enabling real-time instruction fetch; boot block lockout preserves certified safety startup routines. Use Value: Field firmware upgrades via serial interface without replacing hardware; 10,000-cycle endurance supports multi-year maintenance cycles. | Use Scenario: Holding FDA-certified boot loader and diagnostic firmware in portable ultrasound and infusion pump systems requiring guaranteed startup integrity. IC Role / Device Role / Timing Role: Secure boot memory with hardware-protected 16K-byte boot sector (1C000H–1FFFFH); 12 V RESET override enables authorized recovery if boot corruption occurs. Use Value: Eliminates need for external EEPROM or OTP fuses; CMOS standby current <50 µA extends battery life in portable devices. |
| Automotive Body Control Module (BCM) | Networking Equipment Configuration Storage |
Use Scenario: Storing configurable lighting, door lock, and sensor calibration parameters in automotive BCMs operating across −40°C to +85°C. IC Role / Device Role / Timing Role: Parameter block storage (two 8K-byte sectors) accessible for runtime updates; sector-erase allows selective reconfiguration without disrupting main firmware. Use Value: Enables dealership-level feature activation and regional tuning; fast 30 µs/byte programming reduces service time. | Use Scenario: Holding MAC addresses, VLAN settings, and firmware patches in enterprise switches and routers requiring persistent, field-upgradable configuration. IC Role / Device Role / Timing Role: Dual main memory blocks (32K + 64K bytes) support A/B firmware partitioning; DATA polling enables deterministic update sequencing. Use Value: Reduces downtime during remote firmware rollouts; 2.7–3.6 V operation matches PoE-powered board rails. |
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; 55 ns access; 3.0–3.6 V supply; no boot block lockout or 12 V RESET override | Lacks dedicated boot sector protection and recovery mechanism; requires external logic for secure boot enforcement | Choose when cost-sensitive designs accept reduced security and simpler command set |
| MX29LV001CTTI-55G | 1 Mbit (128K × 8); 55 ns; 3.0–3.6 V; includes CFI query support but no 12 V RESET override | CFI-compliant for auto-detection in BIOS/bootloader; boot block lockout implemented differently (no 12 V recovery path) | Prefer for PC-compatible or UEFI-based platforms requiring standardized Flash interrogation |
Compared with SST39VF010-55-4C-NHE and MX29LV001CTTI-55G, the AT49BV001ANT-55VI uniquely combines boot block lockout with 12 V RESET override - a critical differentiator for safety-critical or field-deployed systems requiring guaranteed recovery paths.
Availability
AT49BV001ANT-55VI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, automotive body control modules, networking equipment configuration storage, and embedded system code updates requiring stable component supply across extended lifecycle demands.
Supply support for AT49BV001ANT-55VI 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 security ICs, with legacy leadership in Flash technology for embedded systems.
The AT49BV001A(N)(T) product line delivers single-supply, in-system reprogrammable Flash memory optimized for firmware storage in resource-constrained, field-upgradable embedded applications - particularly where boot integrity and recovery assurance are mandatory.
FAQ
What is the boot block address range for AT49BV001ANT-55VI?
The AT49BV001ANT-55VI uses the "T" variant memory map, where the 16K-byte boot block occupies address range 1C000H to 1FFFFH. This differs from the base AT49BV001A(N) variant (00000H–03FFFH) and is confirmed in the Command Definitions table and Sector Address (SA) notes. The boot block lockout feature, once enabled, protects this region from standard 2.7–3.6 V programming.
Does AT49BV001ANT-55VI support 12 V RESET override for boot block reprogramming?
Yes, AT49BV001ANT-55VI supports 12 V RESET override: applying 12.0 V ± 0.5 V to the RESET pin during chip erase, sector erase, or byte programming operations temporarily disables boot block lockout, allowing reprogramming. This feature is explicitly documented as unavailable on AT49BV001AN(T) variants and is a defining characteristic of the "T" suffix in the AT49BV001A(N)(T) family.
What package type is used by AT49BV001ANT-55VI?
AT49BV001ANT-55VI uses the 32V package: a 32-lead Very Thin Small Outline Package (VSOP), 8 mm × 14 mm body size, JEDEC MO-142 Variation BA compliant. This is distinct from the 32J (PLCC) and 32T (TSOP) variants listed in the Ordering Information table, and its mechanical dimensions are fully specified in Drawing No. 32V.
How does DATA polling work on AT49BV001ANT-55VI during byte programming?
During byte programming, AT49BV001ANT-55VI asserts the complement of the loaded data on I/O7. Once programming completes, true data appears on all outputs. Host firmware can poll I/O7 after initiating a write - when the bit stops toggling and matches expected value, the cycle is complete. This eliminates fixed timing delays and improves update throughput in real-time systems.
What is the maximum erase time for AT49BV001ANT-55VI, and is it guaranteed?
The maximum erase cycle time for AT49BV001ANT-55VI is 5 seconds, as specified in the Program Cycle Characteristics table under tEC (Erase Cycle Time). The datasheet states "3 seconds" as typical and "5 seconds" as maximum - both values are characterized (not 100% tested) but represent guaranteed worst-case bounds for design timing margins in production systems using AT49BV001ANT-55VI.
AT49BV001ANT-55VI 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:
- 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-VSOP
AT49BV001ANT-55VI FAQ
1.How can I place an order for AT49BV001ANT-55VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV001ANT-55VI 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-55VI reliable?
The price and inventory of AT49BV001ANT-55VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV001ANT-55VI is usually 5 days.
3.What payment methods are accepted for AT49BV001ANT-55VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV001ANT-55VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV001ANT-55VI?
AT49BV001ANT-55VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV001ANT-55VI 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-55VI?
For technical support, including AT49BV001ANT-55VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV001ANT-55VI requirements.
6.How does Aetrix verify that AT49BV001ANT-55VI is sourced from the original manufacturer or authorized distributors?
All AT49BV001ANT-55VI 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-55VI meets industry standards.
7.What is the process for return or replacement of AT49BV001ANT-55VI?
All AT49BV001ANT-55VI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV001ANT-55VI, 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-55VI part is unused and in its original packaging.
Return procedure for AT49BV001ANT-55VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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