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Microchip Technology AT49LV002T-70VI
- Part No.:
- AT49LV002T-70VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT49LV002T-70VI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,001
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Product details
Overview
AT49LV002T-70VI from Microchip Technology (formerly Atmel) is a 2-Mbit (256K × 8) single-supply 3.0–3.6V in-system reprogrammable Flash memory IC with 70 ns read access time, sector-based architecture including a 16K-byte boot block (address range 3C000H–3FFFFH), and hardware data protection for embedded firmware storage in industrial controllers.
For engineers reviewing the AT49LV002T-70VI datasheet, AT49LV002T-70VI pinout, AT49LV002T-70VI application, or AT49LV002T-70VI equivalent, this page delivers verified timing, sector layout, erase/program cycle behavior, DC/AC electrical specs, and industrial-grade (-40°C to +85°C) operation under stable VCC.
Technical Context
The AT49LV002T-70VI implements a command-register-based programming model using standard microprocessor bus cycles (CE/OE/WE control), supports DATA polling and toggle-bit status detection for program/erase completion, and features internal erase timing without external clocks. Its sector architecture separates boot code (16K), parameter blocks (2 × 8K), and main memory (96K + 128K).
Boot block lockout is enabled via a six-cycle command sequence; once activated, reprogramming requires 12V on RESET - a feature retained in the T-suffix variant but omitted in N-suffix versions. The device operates in standard EPROM-compatible read mode and uses VCC sense, noise filtering, and control-line inhibition for hardware write protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256K × 8), organized as 262,144 words × 8 bits - sufficient for full bootloader + configuration data in space-constrained industrial MCU systems. |
| Read Access Time | 70 ns max - enables direct execution from flash (XIP) in 5 MHz bus systems without wait states. |
| Supply Voltage Range | 3.0 V to 3.6 V - compatible with 3.3V logic rails and battery-backed industrial power domains. |
| Erase Cycle Time | 10 seconds typical for full chip erase - deterministic timing simplifies firmware update state-machine design. |
| Byte Programming Time | 30 µs typical - supports real-time field updates of small configuration parameters without system interruption. |
| Endurance | 10,000 write/erase cycles - validated for frequent firmware patching in remote monitoring devices. |
| Operating Temperature | -40°C to +85°C - qualified for industrial automation, motor drives, and outdoor metering applications. |
Pinout & Package
AT49LV002T-70VI is supplied in a 32-lead VSOP (8 × 14 mm) package per ordering code suffix "V". Pin functions are identical across PLCC, PDIP, TSOP, and VSOP variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A0–A17 map directly to memory location bits. |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface; latched on rising edge of CE/WE during programming, high-Z when deselected. |
| 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 control; used with CE to prevent bus contention during shared-memory access. |
| WE | Write Enable | Active-low write strobe; initiates command loading, byte programming, and sector erase on falling/rising edges. |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-Z outputs; 12V override enables boot block reprogramming. |
| VCC | Power Supply | 3.0–3.6V primary supply; internal regulation ensures stable core voltage across rail variation. |
| GND | Ground Reference | Signal and power ground reference for all I/O and internal logic; decoupling required per datasheet layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Lockout with 12V Override | Prevents accidental overwrite of critical bootloader code; 12V on RESET allows secure field recovery without hardware redesign. |
| Sector-Erasable Architecture | Independent erasure of two 8K parameter blocks and two main memory blocks (96K/128K) enables modular firmware updates without full chip erase. |
| DATA Polling & Toggle Bit Status | Eliminates need for fixed delay timers during programming/erasing - reduces firmware overhead and improves update reliability. |
| Hardware Write Protection | VCC sense (<1.8V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line gating (OE low/CE high/WE high blocks writes) prevent spurious writes. |
| CMOS Standby Current | 50 µA max at VCC = 3.6V - extends battery life in always-on industrial sensors and RTUs. |
Applications
| Industrial PLC Firmware Storage | Smart Meter Bootloader Memory |
|---|---|
Use Scenario: Storing immutable bootloader and field-upgradable application firmware in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile program storage with 70 ns read access enabling fast startup and XIP execution; boot block lockout secures initial boot code integrity. Use Value: Eliminates need for external OTP or ROM; 10,000-cycle endurance supports lifetime firmware patches without hardware replacement. | Use Scenario: Holding certified metrology firmware and secure boot code in ANSI C12.22-compliant electricity meters requiring tamper-resistant storage. IC Role / Device Role / Timing Role: Sector-erasable Flash providing isolated parameter block (for tariff tables) and protected boot block (for cryptographic keys and boot validation). Use Value: Enables regulatory-compliant over-the-air updates while maintaining FIPS 140-2-aligned secure boot chain integrity. |
| Motor Drive Configuration EEPROM Replacement | Medical Diagnostic Device Calibration Storage |
Use Scenario: Replacing serial EEPROM in servo drive controllers where fast parallel access and higher endurance are required for runtime parameter tuning. IC Role / Device Role / Timing Role: High-speed (70 ns) parallel interface replaces slow I²C/SPI EEPROM; 30 µs/byte programming enables real-time calibration save during commissioning. Use Value: Reduces setup time by >90% vs. serial EEPROM; 50 µA standby current minimizes power draw in always-on drive control modules. | Use Scenario: Storing factory-calibrated sensor coefficients and FDA-cleared diagnostic algorithms in portable ultrasound and ECG analyzers. IC Role / Device Role / Timing Role: Industrial-temp-rated Flash with hardware write protection prevents unauthorized modification of safety-critical calibration data. Use Value: Meets IEC 62304 Class B software requirements for nonvolatile data integrity; sector locking isolates calibration data from application updates. |
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 | 3.0–3.6V, 2 Mbit, 70 ns, 32-pin TSOP; lacks 12V RESET override for boot block unlock. | No hardware-assisted boot block recovery - requires full chip erase if lockout is enabled. | Select when boot block lockout is never enabled or when external high-voltage circuitry is impractical. |
| MX29LV020TC-70G | 3.0–3.6V, 2 Mbit, 70 ns, 32-pin TSOP; includes boot block protection but no documented 12V override path. | Boot block protection is permanent once enabled - no field recovery mechanism defined in datasheet. | Choose for cost-sensitive designs where boot code is truly static and field reprogramming is unnecessary. |
Compared with SST39VF020-70-4C-NHE and MX29LV020TC-70G, the AT49LV002T-70VI uniquely provides 12V-enabled boot block reprogramming - a critical differentiator for industrial field-serviceability and long-term firmware maintainability.
Availability
AT49LV002T-70VI is available at Aetrix Electronics and suitable for industrial automation, smart metering, and medical diagnostics requiring stable component supply, extended temperature operation, and field-upgradable firmware storage.
Supply support for AT49LV002T-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
Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel Flash products including the AT49LV series.
The AT49LV002T-70VI belongs to Atmel's Battery-Voltage™ Flash family, designed specifically for reliable in-system reprogramming in 3.3V industrial and automotive-adjacent applications where data integrity and long-term endurance are critical.
FAQ
What is the boot block address range for AT49LV002T-70VI?
The boot block for AT49LV002T-70VI occupies addresses 3C000H to 3FFFFH (16K bytes), distinct from the base AT49LV002(N) which uses 00000H–03FFFH. This relocated boot sector avoids conflict with main application code in larger memory maps and is confirmed in the AT49BV/LV002(N)(T) datasheet revision 0982D, page 4 and 6.
Does AT49LV002T-70VI support 12V reset override for boot block programming?
Yes, AT49LV002T-70VI supports 12V ± 0.5V applied to the RESET pin to override boot block lockout during chip erase, sector erase, or byte programming - a feature explicitly retained in T-suffix variants per datasheet section "Boot Block Programming Lockout Override" (page 4). This capability is absent in N-suffix parts.
What is the maximum active current consumption of AT49LV002T-70VI?
The AT49LV002T-70VI draws a maximum of 25 mA active current (ICC) at f = 5 MHz and IOUT = 0 mA, as specified in the DC Characteristics table (page 7). This value is consistent across all AT49LV002(N)(T)-70 variants and reflects worst-case dynamic power during sustained read operations.
Can AT49LV002T-70VI be used in place of AT49LV002-70VI?
No - AT49LV002T-70VI and AT49LV002-70VI differ in boot block location (3C000H–3FFFFH vs. 00000H–03FFFH) and RESET functionality. The T-suffix denotes relocated boot sector and retained 12V override; substituting without firmware address remapping and RESET circuit review risks boot failure or unrecoverable lockout.
What packaging options are available for AT49LV002T-70VI?
AT49LV002T-70VI is offered exclusively in the 32-lead VSOP (8 × 14 mm) package, identified by the "V" suffix in the ordering code. Other packages (PLCC "J", PDIP "P6", TSOP "T") exist for the AT49LV002T family but not for the -70VI variant - confirmed in the AT49LV002T Ordering Information table (page 19).
AT49LV002T-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:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VSOP
AT49LV002T-70VI FAQ
1.How can I place an order for AT49LV002T-70VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV002T-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 AT49LV002T-70VI reliable?
The price and inventory of AT49LV002T-70VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV002T-70VI is usually 5 days.
3.What payment methods are accepted for AT49LV002T-70VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV002T-70VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV002T-70VI?
AT49LV002T-70VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV002T-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 AT49LV002T-70VI?
For technical support, including AT49LV002T-70VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV002T-70VI requirements.
6.How does Aetrix verify that AT49LV002T-70VI is sourced from the original manufacturer or authorized distributors?
All AT49LV002T-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 AT49LV002T-70VI meets industry standards.
7.What is the process for return or replacement of AT49LV002T-70VI?
All AT49LV002T-70VI units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV002T-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 AT49LV002T-70VI part is unused and in its original packaging.
Return procedure for AT49LV002T-70VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49LV002T-70VI Tags
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