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Microchip Technology AT49LV002T-12TI
- Part No.:
- AT49LV002T-12TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49LV002T-12TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,899
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Product details
Overview
AT49LV002T-12TI from Microchip Technology (formerly Atmel) is a 2 Mbit (256K × 8) single-supply 3.0–3.6 V in-system reprogrammable Flash memory IC used for nonvolatile code/data storage in embedded microcontroller boot systems. It features 70 ns read access, 10 s chip erase, 30 µs/byte programming, 16K-byte boot block with lockout, and operates across –40°C to +85°C industrial temperature range.
For engineers reviewing the AT49LV002T-12TI datasheet, AT49LV002T-12TI pinout, AT49LV002T-12TI application, or AT49LV002T-12TI equivalent, this page delivers verified electrical specs, sector architecture details, hardware data protection mechanisms, and real-world use cases in firmware update-capable embedded platforms.
Technical Context
The AT49LV002T-12TI implements a standard parallel Flash interface with CE/OE/WE control logic and supports command-based operations including chip erase, sector erase, byte programming, and software product identification. Its memory map allocates the boot block at address 0x3C000–0x3FFFF, distinct from the AT49LV002(N) variant's 0x00000–0x03FFF layout.
It integrates internal program control logic and timers, DATA polling (I/O7 complement), and Toggle Bit (I/O6) detection for end-of-operation verification. Hardware protection includes VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and multi-input inhibit (OE low, CE high, or WE high blocks writes).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256K × 8), enabling full firmware image storage for 8-bit MCUs with limited external memory footprint |
| Read Access Time | 120 ns - defines maximum bus timing budget for instruction fetch or data read cycles in 8-MHz+ systems |
| Supply Voltage | 3.0 V to 3.6 V - compatible with regulated 3.3 V rails; no 5 V required for programming or read |
| Active Current | 25 mA - determines power budget impact during firmware execution or bulk reads |
| Standby Current | 50 µA CMOS - enables ultra-low-power retention in battery-backed or energy-sensitive applications |
| Erase Cycle Time | 10 seconds per chip - sets minimum firmware update latency when full reprogramming is needed |
| Endurance | 10,000 write/erase cycles - supports field firmware updates over multi-year product lifecycle |
Pinout & Package
AT49LV002T-12TI is packaged in a 32-lead TSOP (Type 1, 8 × 20 mm), pin-compatible with industry-standard 32-pin Flash memory footprints. Pin functions follow JEDEC-compliant parallel interface conventions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A17 selects upper/lower half of memory space |
| I/O0–I/O7 | Data Input/Output | Bi-directional 8-bit data bus; latched on rising edge of WE/CE during programming, driven during read |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access; enables bus isolation |
| OE | Output Enable | Active-low output control; allows shared data bus operation without contention when high |
| WE | Write Enable | Active-low write strobe; initiates command sequences and byte programming on falling/rising edge transitions |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-Z outputs; 12 V override enables boot block reprogramming |
| VCC | Power Supply | 3.0–3.6 V main supply; internally regulated for stable core voltage during erase/program pulses |
| GND | Ground | Reference return path for all I/O and internal logic; requires low-impedance PCB connection |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16K-byte region (0x3C000–0x3FFFF) permanently protected after lockout enable; ensures bootloader integrity during field updates |
| DATA Polling & Toggle Bit | I/O7 complement and I/O6 toggling provide hardware-verified completion signaling-eliminates need for fixed delay timers in firmware |
| Sector Erase Architecture | Two 8K-byte parameter blocks + two main memory blocks (96K/128K) allow selective firmware partitioning and wear leveling |
| Hardware Data Protection | VCC sense, multi-input inhibit, and noise filtering prevent accidental writes during power transients or EMI events |
| 12 V RESET Override | Applying 12 V ± 0.5 V to RESET pin bypasses boot block lockout-enables recovery of corrupted bootloader without device replacement |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing and updating firmware for programmable logic controllers operating in harsh factory environments with frequent power cycling. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding initialization code and runtime firmware; accessed via parallel bus during MCU cold start. Use Value: 10,000-cycle endurance and –40°C to +85°C rating ensure reliable operation across decades of industrial deployment. | Use Scenario: Securing certified bootloader code in FDA-regulated diagnostic equipment requiring traceable, tamper-resistant firmware updates. IC Role / Device Role / Timing Role: Dedicated boot block (0x3C000–0x3FFFF) stores immutable startup routines; main memory holds versioned application binaries. Use Value: Boot block lockout prevents unauthorized modification; 12 V RESET override enables authorized recovery-meeting IEC 62304 safety requirements. |
| Automotive Body Control Module | Smart Energy Meter Firmware |
Use Scenario: Hosting configurable calibration tables and feature-enabling firmware in vehicle body control units subject to automotive temperature and EMC stress. IC Role / Device Role / Timing Role: Parallel-interface Flash memory mapped into MCU address space; erased/programmed via in-system commands during dealer reprogramming. Use Value: 120 ns read time meets real-time response needs; hardware data protection prevents corruption during load dump events. | Use Scenario: Storing metrology firmware and tariff configuration data in utility-grade smart meters deployed in unattended outdoor locations. IC Role / Device Role / Timing Role: Primary nonvolatile storage for firmware images and encrypted billing parameters; accessed during meter boot and OTA update cycles. Use Value: 50 µA standby current extends battery life in backup-powered meters; sector erase enables atomic firmware patching without full reflash. |
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 | 3.0–3.6 V, 2 Mbit, 70 ns read, PLCC32 package; lacks 12 V RESET override and boot block lockout override | No hardware-recoverable boot block protection; requires full chip erase if bootloader corrupted | Select when cost sensitivity outweighs field-recovery requirement and PLCC packaging is preferred |
| MX29LV002CTTI-12 | 3.0–3.6 V, 2 Mbit, 120 ns read, TSOP32; identical boot block address (0x3C000–0x3FFFF) and lockout behavior | Same sector architecture and command set; pinout and timing fully compatible for drop-in replacement | Preferred for new designs needing second-source availability without layout change |
Compared with SST39VF020-70-4C-NHE and MX29LV002CTTI-12, the AT49LV002T-12TI uniquely provides 12 V RESET override for boot block recovery-critical for safety-critical or remote-deployed systems where physical access is impractical.
Availability
AT49LV002T-12TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader memory, and automotive body control module applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for AT49LV002T-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 manufacturing, documentation, and technical assistance.
The AT49LV002T-12TI belongs to Atmel's Battery-Voltage™ Flash family, designed specifically for 3 V–only embedded systems requiring in-system reprogrammability, robust data retention, and hardware-level security for boot code integrity.
FAQ
What is the boot block address range for AT49LV002T-12TI?
The AT49LV002T-12TI boot block occupies addresses 0x3C000 to 0x3FFFF (16K bytes). This differs from non-T variants (e.g., AT49LV002N), which locate the boot block at 0x00000–0x03FFF. The T-suffix explicitly denotes top-boot architecture, critical for correct bootloader mapping in system design.
Does AT49LV002T-12TI support 12 V programming or only 3.3 V operation?
The AT49LV002T-12TI operates exclusively from a 3.0–3.6 V supply for all read, erase, and programming functions. However, applying 12 V ± 0.5 V to the RESET pin enables boot block override-this is not programming voltage but a dedicated recovery signal that temporarily disables lockout during erase/program cycles.
How does DATA polling work on AT49LV002T-12TI?
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. This allows firmware to poll I/O7 without fixed delays-AT49LV002T-12TI asserts valid data immediately upon cycle completion, reducing update latency.
Can AT49LV002T-12TI be used in place of AT49LV002-12TI?
No-AT49LV002T-12TI and AT49LV002-12TI differ in boot block location (top vs. bottom), command sequence compatibility, and sector erase address mapping. Substituting them risks incorrect firmware execution or failed erase operations. Always verify boot block address (0x3C000 vs. 0x00000) before replacement.
What package type is used for AT49LV002T-12TI?
AT49LV002T-12TI uses a 32-lead Thin Small Outline Package (TSOP, Type 1, 8 × 20 mm), designated by the "T" suffix in the ordering code. This surface-mount package supports automated assembly and offers thermal performance suitable for industrial temperature operation (–40°C to +85°C).
AT49LV002T-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:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT49LV002T-12TI FAQ
1.How can I place an order for AT49LV002T-12TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV002T-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 AT49LV002T-12TI reliable?
The price and inventory of AT49LV002T-12TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV002T-12TI is usually 5 days.
3.What payment methods are accepted for AT49LV002T-12TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV002T-12TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV002T-12TI?
AT49LV002T-12TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV002T-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 AT49LV002T-12TI?
For technical support, including AT49LV002T-12TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV002T-12TI requirements.
6.How does Aetrix verify that AT49LV002T-12TI is sourced from the original manufacturer or authorized distributors?
All AT49LV002T-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 AT49LV002T-12TI meets industry standards.
7.What is the process for return or replacement of AT49LV002T-12TI?
All AT49LV002T-12TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV002T-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 AT49LV002T-12TI part is unused and in its original packaging.
Return procedure for AT49LV002T-12TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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