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Microchip Technology AT49BV002-12TI
- Part No.:
- AT49BV002-12TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV002-12TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,062
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Product details
Overview
AT49BV002-12TI from Microchip Technology (formerly Atmel) is a 2 Mbit (256K × 8) single-supply 3V-only Flash memory IC designed for in-system reprogrammability in embedded boot code storage. It features 70 ns read access time, 10-second chip erase cycle, byte-programmable architecture with 30 µs/byte typical programming time, and hardware data protection including VCC sense and noise filtering. It is used in industrial microcontroller boot loaders where reliable nonvolatile code retention and field-upgradable firmware are required.
For engineers reviewing the AT49BV002-12TI datasheet, AT49BV002-12TI pinout, AT49BV002-12TI application, or AT49BV002-12TI equivalent, this page delivers verified technical context, sector-based erase control, boot block lockout behavior, DC/AC timing compliance for industrial temperature range (–40°C to +85°C), and real-world design implications of its 32-pin TSOP package and RESET-enabled override functionality.
Technical Context
The AT49BV002-12TI implements a command-register-based architecture requiring six-byte software sequences for chip/sector erase and boot lockout enablement. Its memory is partitioned into one 16K-byte boot block (address 3C000H–3FFFFH), two 8K-byte parameter blocks, and two main memory blocks (96K and 128K bytes), enabling selective firmware updates without full reflash.
It supports standard EPROM-like read operation with CE/OE/WE dual-line control, DATA polling (I/O7 complement) and Toggle Bit (I/O6) methods for program/erase completion detection, and hardware reset-driven boot block reprogramming override at 12 V on the RESET pin - a capability absent in N-suffix variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256K × 8), directly maps to 256 KB of contiguous firmware storage space |
| Read Access Time | 120 ns max - determines worst-case instruction fetch latency in microcontroller boot sequence |
| Byte Programming Time | 30 µs typical - defines minimum time per byte during field firmware patching |
| Chip Erase Time | 10 seconds - sets minimum downtime for full firmware replacement in production or service |
| Operating Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic rails and battery-backed systems |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade embedded control and motor drive applications |
| Endurance | 10,000 write/erase cycles - supports long-term field update viability in maintenance-critical systems |
Pinout & Package
AT49BV002-12TI is supplied in a 32-lead Thin Small Outline Package (TSOP, Type 1, 8 mm × 20 mm), pin-compatible with industry-standard 32-pin Flash memory footprints. Pin functions align with JEDEC-standard parallel NOR Flash interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A0–A16 used for byte-level access |
| I/O0–I/O7 | Data Inputs/Outputs | Bi-directional 8-bit data bus; supports true read-modify-write and byte programming |
| CE | Chip Enable | Active-low chip select; enables device for read/write when low and OE/WE in valid state |
| OE | Output Enable | Active-low output gate; controls data bus tristate during read to prevent contention |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-Z outputs; 12 V input enables boot block override |
| VCC | Power Supply | Single 2.7–3.6 V supply; powers core logic and charge pumps for internal programming voltage generation |
| GND | Ground | Reference return path for all I/O and internal circuitry; requires low-impedance PCB connection |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16K-byte protected region (3C000H–3FFFFH) prevents accidental overwrite of critical boot code; enabled via 6-cycle command sequence |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), WE/CE noise filter (<15 ns pulse rejection), and control-line inhibit (OE low/CE high/WE high blocks writes) |
| DATA Polling & Toggle Bit | I/O7 complement and I/O6 toggle provide real-time, bus-compatible program/erase status without external timers or interrupts |
| Sector-Erasable Architecture | Independent erasure of parameter blocks (8K each) and main memory blocks (96K/128K) enables modular firmware updates and wear leveling |
| 12 V RESET Override | Applying 12 V ±0.5 V to RESET pin during erase/program bypasses boot lockout - essential for recovery after misconfigured lockout |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Loader |
|---|---|
Use Scenario: Storing boot firmware and configuration parameters in programmable logic controllers deployed in factory automation environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing deterministic startup execution and secure field-upgradable application code. Use Value: 10,000-cycle endurance and –40°C to +85°C qualification ensure multi-year reliability without recalibration or replacement. |
Use Scenario: Holding certified bootloader and safety-critical initialization routines in FDA-regulated diagnostic equipment requiring traceable firmware revisions. IC Role / Device Role / Timing Role: Secure, lockable boot memory preventing unauthorized modification while allowing controlled updates via validated service tools. Use Value: Boot block lockout and 12 V RESET override enable regulatory-compliant firmware lifecycle management and emergency recovery. |
| Automotive Body Control Module | Network Router Boot Image |
Use Scenario: Storing low-level driver code and calibration tables in automotive BCMs operating under engine bay thermal stress and EMI-rich conditions. IC Role / Device Role / Timing Role: Robust parallel NOR Flash delivering fast read access (120 ns) for deterministic boot timing and immunity to voltage transients. Use Value: Hardware data protection (VCC sense, noise filtering) prevents spurious writes during ignition cycling or load dump events. |
Use Scenario: Hosting primary boot image and failover recovery firmware in enterprise-grade network routers requiring zero-downtime firmware upgrades. IC Role / Device Role / Timing Role: Dual-block memory architecture enabling A/B firmware partitioning - one block active while the other is updated. Use Value: Sector-erasable structure allows atomic firmware swap with <10 s downtime, meeting carrier-grade availability SLAs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF020-70-4C-NHE | 4 Mbit density, 70 ns access, 3.0–3.6 V supply; lacks RESET-based boot override and uses different command set | Higher capacity suits larger boot images but requires redesign of erase/lockout logic | Select when >2 Mbit storage is needed and RESET override is not required for field recovery |
| MX29LV040CTTC-70G | 4 Mbit, 70 ns, 3.0–3.6 V; includes CFI query support and uniform 64K sectors; no boot block lockout feature | CFI compatibility simplifies programmer integration but removes hardware-enforced boot protection | Prefer for standardized programming workflows where boot security is managed in software |
Compared with SST39VF020-70-4C-NHE and MX29LV040CTTC-70G, the AT49BV002-12TI provides unique boot block lockout with 12 V RESET override - a critical differentiator for safety-critical or field-deployed systems requiring guaranteed boot integrity and recovery capability.
Availability
AT49BV002-12TI is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and automotive body electronics requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT49BV002-12TI 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 full support for legacy Atmel Flash products, including process consistency, documentation, and long-term supply commitments.
The AT49BV002-12TI belongs to Atmel's Battery-Voltage™ Flash family, engineered specifically for low-voltage, in-system reprogrammable code storage in resource-constrained embedded systems with stringent reliability requirements.
FAQ
What is the boot block address range for AT49BV002-12TI?
The boot block for AT49BV002-12TI occupies addresses 3C000H to 3FFFFH (16K bytes). This differs from non-T variants (00000H–03FFFH) and is explicitly defined in the datasheet's sector mapping table. The AT49BV002-12TI uses the T-suffix topology, confirming this higher-address boot region for memory layout compatibility with larger firmware images.
Does AT49BV002-12TI support 12 V RESET override for boot block reprogramming?
Yes, AT49BV002-12TI supports 12 V ±0.5 V applied to the RESET pin during chip erase, sector erase, or byte programming to temporarily disable boot block lockout. This feature is documented in the "Boot Block Programming Lockout Override" section and is unavailable on N-suffix variants like AT49BV002N-12TI.
What is the maximum allowed VCC for AT49BV002-12TI during programming?
The absolute maximum VCC rating for AT49BV002-12TI is +6.25 V, but functional programming requires 2.7 V to 3.6 V. Programming is inhibited below 1.8 V (typical) due to VCC sense circuitry. Exceeding 3.6 V risks violating AC timing specs and may cause premature wear or data corruption - always maintain VCC within the 2.7–3.6 V operating range for AT49BV002-12TI.
How does AT49BV002-12TI indicate end-of-program via DATA polling?
During byte programming, reading the just-loaded address returns the complement of the written data on I/O7. Once programming completes, true data appears on I/O7 and all outputs. This behavior is electrically observable without external clocks and is specified in the "Data Polling Waveforms" section of the AT49BV002-12TI datasheet.
Is AT49BV002-12TI pin-compatible with AT49BV002-12JI or AT49BV002-12VC?
Yes - all AT49BV002-12x variants share identical 32-pin functional pinouts and electrical timing. The suffix (TI, JI, VC) denotes package type (TSOP, PLCC, VSOP) and temperature grade (Industrial), not pin assignment. AT49BV002-12TI uses TSOP, AT49BV002-12JI uses PLCC, and AT49BV002-12VC uses VSOP - all electrically and logically interchangeable in PCB layout.
AT49BV002-12TI 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:
- 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-TSOP
AT49BV002-12TI FAQ
1.How can I place an order for AT49BV002-12TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002-12TI 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 AT49BV002-12TI reliable?
The price and inventory of AT49BV002-12TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002-12TI is usually 5 days.
3.What payment methods are accepted for AT49BV002-12TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002-12TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002-12TI?
AT49BV002-12TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002-12TI 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 AT49BV002-12TI?
For technical support, including AT49BV002-12TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002-12TI requirements.
6.How does Aetrix verify that AT49BV002-12TI is sourced from the original manufacturer or authorized distributors?
All AT49BV002-12TI 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 AT49BV002-12TI meets industry standards.
7.What is the process for return or replacement of AT49BV002-12TI?
All AT49BV002-12TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002-12TI, 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 AT49BV002-12TI part is unused and in its original packaging.
Return procedure for AT49BV002-12TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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