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Microchip Technology AT49BV002N-12TI
- Part No.:
- AT49BV002N-12TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV002N-12TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,633
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Product details
Overview
AT49BV002N-12TI from Microchip Technology (formerly Atmel) is a 2 Mbit (256K × 8) single-supply 3V-only Flash memory IC used for nonvolatile code and data storage in embedded systems. It features 70 ns read access time, 10-second chip erase, byte-programmable architecture with sector protection, and operates across –40°C to +85°C industrial temperature range in TSOP-32 package.
For engineers reviewing the AT49BV002N-12TI datasheet, AT49BV002N-12TI pinout, AT49BV002N-12TI application, or AT49BV002N-12TI equivalent, this page delivers verified electrical specs, boot-block lockout behavior, DATA polling/Toggle Bit confirmation logic, sector-address mapping for Parameter/Boot/Main blocks, and industrial-grade supply-chain support at Aetrix Electronics.
Technical Context
The AT49BV002N-12TI implements a standard parallel Flash interface with CE/OE/WE control lines and 18-bit address bus (A0–A17), supporting EPROM-like read operation and command-based programming/erasure. Its internal architecture includes a dedicated 16K-byte boot block (address 00000H–03FFFH), two 8K-byte parameter blocks, and two main memory blocks (96K/128K bytes).
It uses five-volt-compatible command sequences (e.g., 5555H/2AAAH addressing) for chip/sector erase and byte programming without requiring external high-voltage supplies. Hardware data protection includes VCC sense (<1.8V inhibit), noise filtering (<15 ns pulse rejection), and control-line gating (OE low/CE high/WE high disables programming).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits - supports firmware image storage and configuration data in resource-constrained microcontrollers. |
| Read Access Time | 120 ns max (tACC) - compatible with 8 MHz bus timing; ensures deterministic instruction fetch latency in real-time boot loaders. |
| Supply Voltage | 2.7 V to 3.6 V - enables direct integration with 3.3 V system rails without level-shifting or auxiliary regulators. |
| Active Current | 25 mA typical - limits power budget impact during firmware updates or frequent read operations in battery-backed applications. |
| Standby Current | 50 µA CMOS - supports ultra-low-power sleep modes in portable or energy-harvesting devices. |
| Erase Cycle Time | 10 seconds max (tEC) - defines minimum firmware update window; chip erase affects all sectors except locked boot block. |
| Byte Programming Time | 30 µs typical (tBP) - enables fine-grained field updates without full-image reflash overhead. |
| End-of-Program Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - eliminates need for fixed delay timers in host firmware. |
Pinout & Package
AT49BV002N-12TI is supplied in a 32-lead Thin Small Outline Package (TSOP Type I, 8 mm × 20 mm), pin-compatible with industry-standard 32-pin Flash footprints. Pin 9 is a no-connect (NC) terminal per datasheet Rev. 0982D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus enabling full 256K-word addressing; A0–A15 used for byte-level access within sectors. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access; prevents bus contention when deasserted. |
| OE | Output Enable | Active-low output gate; controls data bus drive; high-Z state when inactive isolates memory from shared data bus. |
| WE | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per command sequence timing; inhibits programming if held high. |
| I/O0–I/O7 | Data Input/Output | Bi-directional 8-bit data bus; carries command codes, program data, and read outputs; supports DATA polling on I/O7 and Toggle Bit on I/O6. |
| RESET | Reset Input | Active-low hardware reset; forces high-Z outputs and aborts ongoing program/erase; not used for boot-block override (unavailable on N-version). |
| VCC | Power Supply | 2.7–3.6 V primary supply; powers core logic and I/O buffers; requires local 0.1 µF decoupling per datasheet layout guidelines. |
| GND | Ground Reference | Signal and power return path; must be low-impedance connection to minimize noise coupling into sensitive read paths. |
| DC (Pin 9) | No-Connect | Internally unconnected; must remain floating - no external tie required; critical for correct TSOP-32 footprint alignment. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16K-byte (00000H–03FFFH) region permanently protected after enable command - secures bootloader code against accidental overwrite in field-upgradable systems. |
| Sector-Erasable Architecture | Independent erasure of two 8K-byte parameter blocks and two main memory blocks (96K/128K) - enables modular firmware partitioning and wear-leveling strategies. |
| Hardware Data Protection | VCC sense, noise filtering, and control-line gating prevent spurious writes during power transients or EMI events - eliminates need for external write-protection circuitry. |
| DATA Polling & Toggle Bit | Real-time end-of-program detection via I/O7 complement or I/O6 toggling - removes dependency on fixed tBP delays and improves host CPU efficiency. |
| Industrial Temperature Range | –40°C to +85°C operation - validated for deployment in automotive body controllers, industrial HMIs, and outdoor IoT gateways. |
Applications
| Embedded Bootloader Storage | Firmware Configuration Storage |
|---|---|
Use Scenario: Storing immutable bootloader code in resource-constrained microcontroller systems where recovery from corrupted application images is required. IC Role / Device Role / Timing Role: Nonvolatile code storage with hardware-enforced boot block lockout preventing accidental overwrite during application updates. Use Value: Ensures system always boots reliably even after repeated field firmware upgrades; eliminates need for external secure boot ROM. |
Use Scenario: Retaining calibration data, network credentials, and user preferences across power cycles in smart sensors and edge nodes. IC Role / Device Role / Timing Role: Parameter block storage with independent 8K-byte erasability enabling atomic updates without disturbing firmware. Use Value: Enables safe over-the-air (OTA) parameter updates with rollback capability; avoids full-flash erase latency. |
| Main Firmware Image Storage | Industrial HMI Display Memory |
Use Scenario: Hosting updatable application firmware in programmable logic controllers (PLCs) and motor drives requiring field-deployable feature enhancements. IC Role / Device Role / Timing Role: Main memory block storage (96K/128K) supporting byte-level programming and sector-erase granularity. Use Value: Reduces downtime during firmware patches by allowing partial reprogramming instead of full-image reloads. |
Use Scenario: Storing display assets (fonts, icons, UI bitmaps) in human-machine interface panels deployed in factory automation environments. IC Role / Device Role / Timing Role: High-reliability nonvolatile memory with 10,000 write cycles and industrial temperature rating. Use Value: Guarantees display content integrity over 10+ years of continuous operation in thermally demanding enclosures. |
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 | 4 Mbit density, 70 ns access, 3.0–3.6 V supply; lacks boot block lockout but offers faster erase (100 ms typical). | Higher capacity suits larger firmware; absence of hardware boot protection requires software-managed integrity checks. | Select when >2 Mbit storage is needed and boot security is handled in firmware. |
| MX29LV200CTTI-70G | 2 Mbit, 70 ns, 3.0–3.6 V; includes CFI-compliant command set and 16K boot sector with write protection, but uses different address mapping (boot at top). | CFI compatibility simplifies driver porting; top-boot architecture may require PCB layout changes for pinout alignment. | Choose for CFI-based toolchain ecosystems or where top-boot sector placement aligns with system memory map. |
Compared with SST39VF200A-70-4C-NHE and MX29LV200CTTI-70G, the AT49BV002N-12TI provides deterministic 120 ns read timing, proven industrial reliability, and hardware-enforced bottom-boot protection - making it optimal for safety-critical bootloader storage where firmware integrity is non-negotiable.
Availability
AT49BV002N-12TI is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, and medical diagnostic equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AT49BV002N-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 technical and supply-chain continuity for legacy Atmel Flash products including the AT49BV series.
The AT49BV002N-12TI belongs to Atmel's Battery-Voltage™ Flash family, designed specifically for reliable in-system reprogrammability in 3V embedded systems without high-voltage programming circuitry.
FAQ
What is the boot block address range for AT49BV002N-12TI?
The AT49BV002N-12TI boot block occupies addresses 00000H to 03FFFH (16K bytes). This bottom-sector location is fixed for the "N" variant and differs from the "T" variant, which places the boot block at 3C000H–3FFFFH. The lockout feature, once enabled, prevents erasure or programming of this region using ≤5.5 V supply.
Does AT49BV002N-12TI support hardware reset-driven boot block override?
No. The AT49BV002N-12TI does not support RESET pin voltage override (12 V) for boot block reprogramming. That feature is explicitly unavailable on all "N" variants per datasheet Rev. 0982D, Section 3 ("RESET: … The RESET feature is not available on the AT49BV/LV002N(T)."). Only "non-N" versions like AT49BV002T permit this override.
How is end-of-program detected on AT49BV002N-12TI?
The AT49BV002N-12TI supports two hardware methods: DATA polling (reading the programmed byte returns its complement on I/O7 until completion) and Toggle Bit (I/O6 toggles between 0 and 1 during programming and stops upon completion). Both are usable at any point during the cycle and eliminate reliance on fixed tBP timing.
What packages are available for AT49BV002N-12TI?
The AT49BV002N-12TI is offered exclusively in TSOP-32 (32T) package per Atmel ordering information tables. Pin 9 is designated DC (don't connect), distinguishing it from PLCC/PDIP/VSOP variants. No other package options (e.g., PDIP, PLCC, VSOP) are assigned to the "-12TI" suffix.
What is the maximum erase cycle time for AT49BV002N-12TI?
The AT49BV002N-12TI specifies a maximum chip erase cycle time (tEC) of 10 seconds. This applies to full-chip erase; sector erase times are not separately specified but fall within the same 10-second bound. Erase operations are internally timed - no external clocks or polling are required beyond DATA polling or Toggle Bit monitoring.
AT49BV002N-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
AT49BV002N-12TI FAQ
1.How can I place an order for AT49BV002N-12TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002N-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 AT49BV002N-12TI reliable?
The price and inventory of AT49BV002N-12TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002N-12TI is usually 5 days.
3.What payment methods are accepted for AT49BV002N-12TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002N-12TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002N-12TI?
AT49BV002N-12TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002N-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 AT49BV002N-12TI?
For technical support, including AT49BV002N-12TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002N-12TI requirements.
6.How does Aetrix verify that AT49BV002N-12TI is sourced from the original manufacturer or authorized distributors?
All AT49BV002N-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 AT49BV002N-12TI meets industry standards.
7.What is the process for return or replacement of AT49BV002N-12TI?
All AT49BV002N-12TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002N-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 AT49BV002N-12TI part is unused and in its original packaging.
Return procedure for AT49BV002N-12TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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