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Microchip Technology AT49BV002-12VI
- Part No.:
- AT49BV002-12VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT49BV002-12VI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,720
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Product details
Overview
AT49BV002-12VI from Microchip Technology (formerly Atmel) is a 2 Mbit (256K × 8) single-supply 2.7–3.6V in-system reprogrammable Flash memory IC used for nonvolatile code/data storage in embedded microcontroller systems. It delivers 120 ns read access time, supports sector-based erase (boot, parameter, and main memory blocks), features hardware data protection, and operates across the industrial temperature range (−40°C to +85°C). It is commonly deployed in firmware update storage for industrial controllers.
For engineers reviewing the AT49BV002-12VI datasheet, AT49BV002-12VI pinout, AT49BV002-12VI application, or AT49BV002-12VI equivalent, key selection criteria include its 32-pin PLCC/TSOP/VSOP package compatibility, boot block lockout capability, DATA polling and toggle bit programming status detection, and 10,000 write/erase cycle endurance under industrial voltage and thermal conditions.
Technical Context
The AT49BV002-12VI implements a standard parallel Flash architecture with CE/OE/WE control logic, supporting EPROM-like read operation and command-based byte programming and sector/chip erase. Its internal program controller manages timing without external clocks, and the RESET pin enables both system reset and (on non-N variants) 12V override of boot block lockout.
Memory organization includes one 16K-byte boot block (address 00000H–03FFFH), two 8K-byte parameter blocks, and two main memory blocks (96K and 128K bytes). The device uses standard microprocessor write timings and supports software product identification (manufacturer code 1FH, device code 07H).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), enabling full firmware image storage for 8-bit MCUs with <256KB code space |
| Read Access Time | 120 ns maximum - defines worst-case instruction fetch latency in tightly timed real-time systems |
| Supply Voltage | 2.7–3.6 V - compatible with 3.3V logic rails and battery-backed operation down to 2.7V |
| Active Current | 25 mA typical - determines power budget impact during firmware read or verify operations |
| Standby Current | 50 µA CMOS - enables ultra-low-power retention in always-on industrial monitoring nodes |
| Erase Time | 10 seconds max chip erase - sets minimum firmware update downtime in field-deployed equipment |
| Programming Endurance | 10,000 write/erase cycles - specifies field lifetime for devices requiring periodic configuration updates |
Pinout & Package
AT49BV002-12VI is available in 32-pin VSOP (8 × 14 mm), TSOP, PLCC, and PDIP packages. Pin functions are identical across all variants per datasheet Rev. 0982D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A0–A14 used for software ID and command sequences |
| I/O0–I/O7 | Data Inputs/Outputs | Bi-directional 8-bit data bus; I/O7 used for DATA polling, I/O6 for toggle bit status indication |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access |
| 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 on falling/rising edges per command sequence timing |
| RESET | Reset Input | Active-low system reset; at 12V enables boot block override - not available on N-suffix variants |
| VCC | Power Supply | 2.7–3.6V primary supply; internal voltage regulation ensures stable programming margins |
| GND | Ground | Reference return path for all I/O and core logic; decoupling required within 10 mm of VCC pin |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16K-byte protected region (00000H–03FFFH) prevents accidental overwrite of bootloader code during field updates |
| DATA Polling & Toggle Bit | Real-time program/erase completion detection via I/O7 complement or I/O6 toggling - eliminates need for fixed delay timers |
| Sector Erase Architecture | Independent erasure of boot, parameter (2×8K), and main memory blocks (96K/128K) enables granular firmware partitioning |
| Hardware Data Protection | VCC sense (<1.8V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line gating prevent spurious writes |
| Single 2.7–3.6V Supply | Eliminates need for 5V or 12V programming voltages - simplifies power design and enables direct MCU interface |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing updatable ladder logic and I/O mapping tables in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with sector-protected bootloader and parameter blocks; 120 ns read access supports deterministic scan-cycle timing. Use Value: Enables safe remote firmware upgrades without risk of bricking the device due to boot block corruption. | Use Scenario: Retaining calibrated sensor offsets, user preferences, and regulatory-compliant audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Parameter and configuration storage with 50 µA standby current for battery-backed retention over multi-year shelf life. Use Value: Meets IEC 62304 data integrity requirements via hardware lockout and 10,000-cycle endurance. |
| Automotive Body Control Module | Networking Equipment Boot Image |
Use Scenario: Holding vehicle-specific calibration data and feature-enable bits in body control units subjected to −40°C to +85°C thermal cycling. IC Role / Device Role / Timing Role: Industrial-grade Flash memory with validated operation across full temperature range and robust ESD immunity. Use Value: Eliminates need for external voltage translators or charge pumps - reduces BOM count and layout complexity. | Use Scenario: Storing compressed boot images and recovery kernels in enterprise switches and routers requiring field-upgradable firmware. IC Role / Device Role / Timing Role: Primary boot memory mapped to CPU address space; supports fast 120 ns reads during cold start and secure sector-erase for patch deployment. Use Value: Enables zero-downtime firmware rollbacks using dual main memory blocks as A/B partitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF020-120-4C-NHE | 3.3V-only, 2 Mbit, 120 ns access, same 32-pin TSOP/VSOP footprint but no RESET pin or 12V boot override | Lacks boot block lockout override; requires software-only protection schemes | Preferred when simplified command set and lower cost outweigh boot security flexibility |
| MX29LV020TC-12G | 3.0–3.6V, 2 Mbit, 120 ns, supports CFI query but uses different command sequences and lacks hardware RESET override | No dedicated 12V boot unlock path; relies on software lock/unlock commands only | Chosen for CFI-compliant toolchain integration where Atmel-specific features are unnecessary |
Compared with SST39VF020-120-4C-NHE and MX29LV020TC-12G, the AT49BV002-12VI uniquely provides hardware-enforced boot block protection with 12V RESET override - critical for safety-critical firmware update paths where software-only locks are insufficient.
Availability
AT49BV002-12VI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and automotive body control module applications requiring stable component supply across extended temperature and voltage ranges.
Supply support for AT49BV002-12VI 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
Microchip Technology acquired Atmel in 2016 and maintains legacy Flash product lines including the AT49BV series for industrial and automotive continuity.
The AT49BV002-12VI belongs to Atmel's Battery-Voltage™ Flash family, designed specifically for reliable in-system reprogramming in resource-constrained embedded systems operating from single 3V supplies.
FAQ
What is the memory organization of the AT49BV002-12VI?
The AT49BV002-12VI organizes its 2 Mbit (256K × 8) capacity into one 16K-byte boot block (00000H–03FFFH), two 8K-byte parameter blocks, and two main memory blocks (96K and 128K bytes). This structure enables segregated storage of bootloader, calibration data, and application firmware - a layout directly supported by the AT49BV002-12VI command set and sector erase functionality.
Does the AT49BV002-12VI support 12V boot block override?
Yes, the AT49BV002-12VI supports 12V ± 0.5V applied to the RESET pin to override the boot block programming lockout during chip erase, sector erase, or byte programming. This hardware-level override is active only on non-N suffix variants like the AT49BV002-12VI and is explicitly disabled on AT49BV002N-12VI per datasheet Rev. 0982D.
What package types are offered for the AT49BV002-12VI?
The AT49BV002-12VI is manufactured in four industry-standard 32-pin packages: 32J (PLCC), 32P6 (PDIP), 32T (TSOP), and 32V (VSOP, 8 × 14 mm). All share identical pinout and electrical characteristics; the VSOP variant (32V) is most common for space-constrained industrial PCBs requiring low profile and thermal performance.
How does the AT49BV002-12VI indicate programming completion?
The AT49BV002-12VI offers two hardware methods: DATA polling (I/O7 returns complement of written data until completion, then true data) and Toggle Bit (I/O6 toggles between 0 and 1 during operation, stops when complete). Both are usable at any point during the cycle and eliminate reliance on fixed timing delays - a key reliability feature of the AT49BV002-12VI design.
Is the AT49BV002-12VI compatible with 5V microcontrollers?
No, the AT49BV002-12VI is a 2.7–3.6V-only device. Its inputs are not 5V-tolerant, and applying 5V signals risks damage. Interface with 5V MCUs requires level translation on CE, OE, WE, and I/O lines. The AT49BV002-12VI datasheet explicitly specifies VIH = 2.0V and VIL = 0.6V - confirming strict 3.3V logic compatibility.
AT49BV002-12VI 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:
- 2Mbit
- Memory Organization:
- 256K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 50µs
- Access Time:
- 120 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
AT49BV002-12VI FAQ
1.How can I place an order for AT49BV002-12VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002-12VI 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 AT49BV002-12VI reliable?
The price and inventory of AT49BV002-12VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002-12VI is usually 5 days.
3.What payment methods are accepted for AT49BV002-12VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002-12VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002-12VI?
AT49BV002-12VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002-12VI 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 AT49BV002-12VI?
For technical support, including AT49BV002-12VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002-12VI requirements.
6.How does Aetrix verify that AT49BV002-12VI is sourced from the original manufacturer or authorized distributors?
All AT49BV002-12VI 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 AT49BV002-12VI meets industry standards.
7.What is the process for return or replacement of AT49BV002-12VI?
All AT49BV002-12VI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002-12VI, 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 AT49BV002-12VI part is unused and in its original packaging.
Return procedure for AT49BV002-12VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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