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Microchip Technology AT49BV002AN-70VI
- Part No.:
- AT49BV002AN-70VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT49BV002AN-70VI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,748
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Product details
Overview
AT49BV002AN-70VI from Atmel is a 2 Mbit (256K × 8) single-supply Flash memory IC operating at 2.7–3.6 V, featuring 70 ns read access time, 4-second chip erase, and byte-programming at 30 µs/byte. It integrates hardware data protection, DATA polling, and toggle-bit end-of-operation detection for embedded firmware storage in industrial microcontroller systems.
For engineers reviewing the AT49BV002AN-70VI datasheet, AT49BV002AN-70VI pinout, AT49BV002AN-70VI application, or AT49BV002AN-70VI equivalent, this page delivers verified specifications, PLCC-32 package mapping, sector-based erase architecture, boot-block lockout behavior, and real-world design implications for in-system reprogramming and secure boot code retention.
Technical Context
The AT49BV002AN-70VI implements a standard parallel NOR Flash interface with CE/OE/WE control logic, supporting EPROM-like read timing and command-based programming/erasure. Its internal architecture divides memory into one 16 KB boot block (00000H–03FFFH), two 8 KB parameter blocks, and four main memory blocks (32 KB + 3×64 KB).
Unlike the T-suffix variant, the AT49BV002AN-70VI uses the low-address boot block layout and excludes RESET pin functionality - pin 1 is NC in PLCC/DIP packages and pin 9 is NC in TSOP. Boot block lockout, once enabled, permanently prevents reprogramming under ≤5.5 V, with no 12 V override capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits - supports full firmware image storage for 8-bit/16-bit MCUs. |
| Read Access Time | 70 ns - enables direct execution from flash (XIP) in timing-critical boot sequences without wait states. |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V system rails and battery-backed operation; no 5 V required. |
| Erase Cycle Time | 4 seconds typical for full chip erase - allows rapid field firmware updates without external high-voltage circuitry. |
| Byte Programming Time | 30 µs typical - supports fine-grained patching of configuration or calibration data during runtime. |
| End-of-Operation Detection | DATA polling (I/O7 complement) and toggle-bit (I/O6 toggling) - eliminates need for fixed delay timers in host firmware. |
| Write Endurance | 10,000 program/erase cycles - sufficient for infrequent firmware upgrades over 10+ year product lifecycles. |
Pinout & Package
AT49BV002AN-70VI is packaged in a 32-lead Plastic Leaded Chip Carrier (PLCC-32), compliant with JEDEC MS-016 Variation AE. Pin 1 is marked by a corner notch; pin 1 is No Connect (NC) 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. |
| 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 monitoring. |
| 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 tristate to prevent contention on shared memory buses. |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming. |
| RESET | Reset Input | No-connect (NC) on AT49BV002AN-70VI - reset functionality and 12 V boot override are disabled. |
| VCC / GND | Power Supply | Single 2.7–3.6 V supply; CMOS standby current <50 µA enables low-power sleep modes. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16 KB region (00000H–03FFFH) permanently protected after enable command - secures bootloader integrity against accidental overwrite. |
| Sector-Erasable Architecture | Independent erase of boot block, two 8 KB parameter blocks, and four main memory blocks - enables selective firmware updates without full chip erase. |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line interlock (OE low/CE high/WE high blocks writes) - prevents spurious writes in noisy environments. |
| Standard Command Interface | 6-byte chip erase, 6-byte sector erase, and 4-byte byte-program commands using 5 V–level logic - simplifies integration with legacy 5 V microcontrollers via level-shifting. |
| Software Product Identification | Manufacturer code 1FH, device code 07H - enables automatic algorithm selection in universal programmers and production test systems. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Retention |
|---|---|
Use Scenario: Storing and updating firmware for programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile program memory holding boot code and application firmware; accessed via parallel bus during cold start and field upgrade. Use Value: 70 ns read speed ensures deterministic boot timing; 10,000-cycle endurance supports 5+ years of scheduled firmware patches without replacement. |
Use Scenario: Securing certified bootloader code in Class II medical instruments where regulatory compliance requires immutable startup routines. IC Role / Device Role / Timing Role: Dedicated boot block memory with permanent lockout preventing unauthorized modification of safety-critical initialization code. Use Value: Boot block lockout activated via command sequence ensures bootloader remains unaltered even during full-application reprogramming cycles. |
| Automotive Body Control Module (BCM) | Point-of-Sale Terminal Configuration Storage |
Use Scenario: Holding calibration tables and feature-enable flags in automotive BCMs subjected to -40°C to +85°C ambient conditions. IC Role / Device Role / Timing Role: Parameter block storage (two 8 KB sections) for vehicle-specific settings updated via diagnostic port. Use Value: Sector-erase capability allows independent update of calibration data without erasing main application firmware or boot code. |
Use Scenario: Storing localized language packs, tax rate tables, and peripheral driver configurations in retail POS terminals deployed globally. IC Role / Device Role / Timing Role: Main memory block (32 KB + 3×64 KB) hosting field-upgradable assets accessed during terminal initialization. Use Value: 4-second chip erase enables rapid deployment of regional software variants during manufacturing or service depot rework. |
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 | Same density (2 Mbit), 70 ns access, but uses 3.0–3.6 V range and lacks boot block lockout; includes RY/BY# ready/busy pin. | Requires external polling or busy-pin monitoring instead of DATA polling/toggle-bit; no hardware-protected boot region. | Select when ready/busy signaling is preferred over software polling and boot security is managed externally. |
| MX29LV200CTTI-70G | 2 Mbit, 70 ns, 2.7–3.6 V, with CFI-compliant command set; boot block at top (0x000000–0x003FFF) but lockout is software-configurable, not permanent. | Supports both top- and bottom-boot configurations; lockout can be disabled/re-enabled, unlike AT49BV002AN-70VI's irreversible protection. | Choose when flexible boot block management is needed across multiple product variants or revision-controlled firmware strategies. |
Compared with SST39VF200A-70-4C-NHE and MX29LV200CTTI-70G, the AT49BV002AN-70VI provides guaranteed permanent boot block protection and integrated DATA polling - reducing host MCU overhead and eliminating risk of bootloader corruption in safety-critical deployments.
Availability
AT49BV002AN-70VI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader retention, automotive body control module calibration, and point-of-sale terminal configuration requiring stable component supply across extended lifecycle programs.
Supply support for AT49BV002AN-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 innovator known for Flash memory, microcontrollers, and secure authentication ICs targeting industrial, automotive, and IoT applications.
The AT49BV002AN-70VI belongs to Atmel's Battery-Voltage™ Flash family, designed specifically for single-supply, in-system reprogrammable nonvolatile storage in resource-constrained embedded systems operating from 2.7 V rails.
FAQ
What is the boot block address range for AT49BV002AN-70VI?
The AT49BV002AN-70VI uses the low-address boot block layout: 00000H to 03FFFH (16 KB). This differs from the T-suffix variant, which places the boot block at 3C000H–3FFFFH. The address range is fixed and cannot be remapped in hardware.
Does AT49BV002AN-70VI support RESET pin functionality?
No. The AT49BV002AN-70VI has no functional RESET pin: pin 1 is designated NC (No Connect) in PLCC and DIP packages, and pin 9 is NC in TSOP. The RESET feature - including 12 V boot override - is absent and cannot be enabled.
How does boot block lockout work on AT49BV002AN-70VI?
Once enabled via the six-command sequence (555H/AAH → AAH/55H → 555H/80H → 555H/AAH → AAH/55H → 555H/40H), the boot block becomes permanently write-protected under ≤5.5 V. No command or voltage level can reverse this state on the AT49BV002AN-70VI.
Can AT49BV002AN-70VI be used in 5 V systems?
AT49BV002AN-70VI operates only from 2.7–3.6 V and is not 5 V tolerant. However, its command interface accepts 5 V–level logic signals (VIL = 0.6 V, VIH = 2.0 V), allowing safe connection to 5 V microcontrollers via proper level translation on control lines.
What packaging options are available for AT49BV002AN-70VI?
The AT49BV002AN-70VI is exclusively offered in the 32-lead PLCC (32J) package per Atmel's ordering information. Other variants (e.g., PDIP, TSOP, VSOP) exist for the base AT49BV002AN family, but the -70VI suffix denotes the PLCC-32 industrial-grade version.
AT49BV002AN-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
AT49BV002AN-70VI FAQ
1.How can I place an order for AT49BV002AN-70VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002AN-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 AT49BV002AN-70VI reliable?
The price and inventory of AT49BV002AN-70VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002AN-70VI is usually 5 days.
3.What payment methods are accepted for AT49BV002AN-70VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002AN-70VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002AN-70VI?
AT49BV002AN-70VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002AN-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 AT49BV002AN-70VI?
For technical support, including AT49BV002AN-70VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002AN-70VI requirements.
6.How does Aetrix verify that AT49BV002AN-70VI is sourced from the original manufacturer or authorized distributors?
All AT49BV002AN-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 AT49BV002AN-70VI meets industry standards.
7.What is the process for return or replacement of AT49BV002AN-70VI?
All AT49BV002AN-70VI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002AN-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 AT49BV002AN-70VI part is unused and in its original packaging.
Return procedure for AT49BV002AN-70VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV002AN-70VI Tags
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