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Microchip Technology AT49BV002ANT-70VI
- Part No.:
- AT49BV002ANT-70VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT49BV002ANT-70VI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,866
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Product details
Overview
AT49BV002ANT-70VI from Atmel is a 2.7 V–3.6 V single-supply, in-system reprogrammable Flash memory IC with 2 Mbit (256K × 8) capacity, 70 ns read access time, and industrial temperature range (−40°C to +85°C). It features sector-erase architecture including one 16K-byte boot block (address 3C000H–3FFFFH), two 8K-byte parameter blocks, and four main memory blocks - used for firmware storage and secure boot code retention in embedded controllers.
For engineers reviewing the AT49BV002ANT-70VI datasheet, AT49BV002ANT-70VI pinout, AT49BV002ANT-70VI application, or AT49BV002ANT-70VI equivalent, key selection criteria include boot-block lockout capability, 30 µs/byte programming time, hardware data protection (VCC sense, noise filter), DATA polling/Toggle Bit end-of-cycle detection, and compatibility with standard microprocessor bus timing.
Technical Context
The AT49BV002ANT-70VI implements a command-register-based architecture requiring five-volt-only command sequences (e.g., 555H/AAH, AAH/55H) for erase and program operations - no external high-voltage programming supply needed. Its internal logic supports chip erase (max 4 s), sector erase (parameter and main blocks), and byte-by-byte programming with automatic pulse generation.
It integrates hardware data protection via VCC sensing (<1.8 V inhibits programming), noise filtering (rejects <15 ns pulses on WE/CE), and control-line inhibition (OE low, CE high, or WE high blocks writes). The RESET pin enables system-level reset and - uniquely in the T variant - 12 V override of boot-block lockout during erase/program cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits - sufficient for full bootloader + configuration data in space-constrained microcontroller systems. |
| Read Access Time | 70 ns - enables direct interface with 14 MHz+ microcontrollers without wait states in read-intensive firmware fetch scenarios. |
| Supply Voltage | 2.7 V to 3.6 V - supports battery-powered and low-voltage industrial systems; eliminates need for level-shifting in 3.3 V domains. |
| Byte Programming Time | 30 µs typical - allows rapid field updates of small firmware patches without disrupting real-time operation. |
| Erase Cycle Time | 4 seconds max (chip or sector) - enables predictable in-system reprogramming windows for OTA-like updates in embedded gateways. |
| End-of-Operation Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - provides software-controlled, non-blocking status monitoring without dedicated status pins. |
| Write Endurance | 10,000 program/erase cycles - validated for long-life applications such as industrial HMI firmware storage and automotive ECUs. |
| Operating Temperature | −40°C to +85°C - qualified for industrial control panels, motor drives, and outdoor telemetry equipment. |
Pinout & Package
AT49BV002ANT-70VI is supplied in a 32-lead VSOP package (8 mm × 14 mm), compliant with JEDEC MO-142 Variation BA. Pin 1 is marked by a notch or dot; pin 9 is NC (no connect) in TSOP/VSOP variants per datasheet Rev. 3353D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A11 is "don't care" in command cycles, enabling aliasing (e.g., AAA → 2AA). |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; I/O7 used for DATA polling, I/O6 for Toggle Bit - both enable software-driven operation status feedback. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for read access; dual-line control prevents bus contention. |
| OE | Output Enable | Active-low output control; outputs enter high-Z when OE or CE is high - essential for shared-bus arbitration. |
| WE | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per command cycle timing; inhibited if OE low or CE high. |
| RESET | Reset Input | Active-low system reset; high-Z outputs on low assertion; 12 V ± 0.5 V applied here overrides boot-block lockout - unique to T variant. |
| VCC / GND | Power Supply | Single 2.7–3.6 V supply; CMOS standby current ≤50 µA - critical for battery-backed firmware retention. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16K-byte sector (3C000H–3FFFFH) permanently protected after command sequence - ensures immutable bootloader integrity in field-deployed devices. |
| Hardware Data Protection | VCC sense (<1.8 V disables programming), noise filtering (<15 ns pulse rejection), and control-line interlock - eliminates spurious writes from EMI or brown-out conditions. |
| Sector-Erase Architecture | Independent erasure of two 8K-byte parameter blocks and four main memory blocks (32K/64K/64K/64K) - enables selective firmware updates without full chip erase. |
| 12 V RESET Override | Applying 12 V ± 0.5 V to RESET pin during erase/program bypasses boot-block lockout - enables recovery of corrupted secure code without device replacement. |
| Standard Microprocessor Interface | CE/OE/WE control signals and EPROM-like read timing - simplifies integration into legacy 8051, Z80, or ARM7-based designs without glue logic. |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Storing firmware and calibration tables in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with fast 70 ns read access for deterministic scan-cycle execution and in-field update capability via RS-485 or CAN. Use Value: Boot-block lockout prevents accidental overwrites of safety-critical startup routines; 10,000-cycle endurance supports multi-year field service life. |
Use Scenario: Holding vehicle-specific configuration data (e.g., door lock logic, lighting profiles) in body control units subject to frequent dealership reprogramming. IC Role / Device Role / Timing Role: Parameter block storage for user-configurable settings; sector-erase allows updating lighting profiles without disturbing core BCM firmware. Use Value: 30 µs/byte programming enables sub-second reconfiguration during dealer diagnostics; 2.7–3.6 V operation matches automotive battery voltage range. |
| Medical Infusion Pump Bootloader | Smart Energy Meter Firmware |
|
Use Scenario: Securing certified bootloader code in Class II medical devices where regulatory compliance requires immutable startup verification. IC Role / Device Role / Timing Role: Boot block (3C000H–3FFFFH) stores signed bootloader; lockout feature enforces cryptographic chain-of-trust at power-on. Use Value: 12 V RESET override permits emergency bootloader recovery under audit-controlled procedures; industrial temp rating ensures reliability in clinical settings. |
Use Scenario: Storing AMI firmware and tariff tables in utility-grade electricity meters deployed outdoors across wide ambient temperatures. IC Role / Device Role / Timing Role: Main memory blocks store upgradable application firmware; sector erase isolates tariff updates from communication stack changes. Use Value: 4 s max erase time meets utility firmware update SLAs; 50 µA standby current extends battery backup duration during grid outages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF200A-70-4C-NHE | 2 Mbit, 70 ns, 3.0–3.6 V; lacks boot-block lockout and 12 V RESET override; uses different command set (SST proprietary). | No hardware-enforced bootloader protection; requires software-managed write protection - less suitable for safety-critical boot code. | Choose when cost sensitivity outweighs secure boot requirements and existing firmware already supports SST command protocol. |
| MX29LV200CTTI-70G | 2 Mbit, 70 ns, 3.0–3.6 V; includes CFI-compliant boot-block protection but no 12 V override; requires 12 V on VPP pin for programming (not RESET). | Boot protection is functional but recovery from corrupted boot code requires external high-voltage programmer - not in-system. | Prefer when CFI standardization is required for toolchain compatibility and field recovery is handled via external programming fixtures. |
Compared with SST39VF200A-70-4C-NHE and MX29LV200CTTI-70G, the AT49BV002ANT-70VI uniquely combines hardware-enforced boot-block lockout with in-system 12 V RESET override - enabling both robust security and field-recoverable firmware in a single 3.3 V-compatible package.
Availability
AT49BV002ANT-70VI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive BCM configuration, medical infusion pump bootloaders, and smart energy meter firmware requiring stable component supply and long-term lifecycle support.
Supply support for AT49BV002ANT-70VI 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 solutions for industrial, automotive, and IoT applications.
The AT49BV002A(N)(T) family was designed as Battery-Voltage™ Flash memory for in-system reprogrammability in 3.3 V embedded systems - prioritizing low-power operation, hardware data protection, and secure boot architecture.
FAQ
What is the boot block address range for AT49BV002ANT-70VI?
The AT49BV002ANT-70VI uses the "T" variant memory map, where the 16K-byte boot block occupies addresses 3C000H to 3FFFFH. This differs from the base AT49BV002A(N) variant (00000H–03FFFH) and is confirmed in the datasheet's sector address table and boot block lockout detection section.
Does AT49BV002ANT-70VI support in-system boot block reprogramming after lockout is enabled?
Yes - the AT49BV002ANT-70VI supports in-system boot block reprogramming after lockout activation by applying 12.0 V ± 0.5 V to the RESET pin during chip erase, sector erase, or byte programming. This override capability is explicitly documented for the "T" suffix and is not available on AN or base A variants.
What package type does AT49BV002ANT-70VI use, and is pin 9 connected?
AT49BV002ANT-70VI uses the 32-lead VSOP package (8 mm × 14 mm, JEDEC MO-142 BA). Per datasheet Rev. 3353D, pin 9 is a no-connect (NC) in TSOP and VSOP variants - it must remain unconnected in PCB layout to avoid functional interference.
How is end-of-program detection implemented in AT49BV002ANT-70VI?
The AT49BV002ANT-70VI provides two hardware-supported 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 require no external components and operate using standard read cycles.
What are the key hardware data protection mechanisms in AT49BV002ANT-70VI?
AT49BV002ANT-70VI implements three hardware protections: (1) VCC sense circuitry disabling programming below ~1.8 V, (2) noise filtering rejecting input pulses <15 ns on WE/CE, and (3) control-line interlock - any of OE low, CE high, or WE high inhibits write cycles. These prevent unintended writes during power transients or EMI events.
AT49BV002ANT-70VI 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:
- 70 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
AT49BV002ANT-70VI FAQ
1.How can I place an order for AT49BV002ANT-70VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002ANT-70VI 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 AT49BV002ANT-70VI reliable?
The price and inventory of AT49BV002ANT-70VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002ANT-70VI is usually 5 days.
3.What payment methods are accepted for AT49BV002ANT-70VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002ANT-70VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002ANT-70VI?
AT49BV002ANT-70VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002ANT-70VI 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 AT49BV002ANT-70VI?
For technical support, including AT49BV002ANT-70VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002ANT-70VI requirements.
6.How does Aetrix verify that AT49BV002ANT-70VI is sourced from the original manufacturer or authorized distributors?
All AT49BV002ANT-70VI 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 AT49BV002ANT-70VI meets industry standards.
7.What is the process for return or replacement of AT49BV002ANT-70VI?
All AT49BV002ANT-70VI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002ANT-70VI, 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 AT49BV002ANT-70VI part is unused and in its original packaging.
Return procedure for AT49BV002ANT-70VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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