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Microchip Technology AT49LV002-12VC
- Part No.:
- AT49LV002-12VC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT49LV002-12VC.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,123
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Product details
Overview
AT49LV002-12VC from Microchip Technology (formerly Atmel) is a 2-Mbit (256K × 8) single-supply 3.0–3.6V in-system reprogrammable Flash memory IC used for nonvolatile code and data storage in embedded microcontroller systems. It delivers 120 ns read access time, 10-second chip erase, byte-programmable architecture with sector protection, and operates across commercial temperature range (0°C to 70°C). It is commonly deployed in firmware boot storage for industrial controllers where reliable field-upgradable code retention is required.
For engineers reviewing the AT49LV002-12VC datasheet, AT49LV002-12VC pinout, AT49LV002-12VC application, or AT49LV002-12VC equivalent, key selection considerations include its 32-pin VSOP package, boot-block lockout capability, DATA polling/Toggle Bit programming status detection, and compatibility with standard 5V-command interface logic despite 3.3V-only operation.
Technical Context
This device implements a command-register-based Flash architecture requiring six-byte software command sequences for chip/sector erase and boot-lock enable. Its memory is partitioned into one 16K-byte boot block (address 00000H–03FFFH), two 8K-byte parameter blocks, and two main memory blocks (96K + 128K bytes), enabling selective erasure without disturbing protected firmware.
Hardware data protection includes VCC sense (<1.8V inhibits programming), noise filtering on WE/CE (rejects <15 ns pulses), and control-line interlock (OE low, CE high, or WE high disables write cycles). The RESET pin supports both standard reset and 12V override of boot-block lockout - though this 12V override is disabled in the N-suffix variants, it remains functional in the base AT49LV002 series including AT49LV002-12VC.
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 MCU designs. |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard 3.3V I/O domains; no external voltage translators needed. |
| Read Access Time | 120 ns - meets timing requirements for mid-speed 8-bit/16-bit microcontrollers without wait states. |
| Erase Cycle Time | 10 seconds (typical chip erase) - enables rapid firmware updates during production or field service. |
| Byte Programming Time | 30 µs typical - allows fine-grained patching of individual parameters or calibration values. |
| End-of-Write Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - eliminates need for fixed delay timers in host firmware. |
| Endurance | 10,000 program/erase cycles - supports long-term field update deployments in industrial equipment. |
Pinout & Package
AT49LV002-12VC is supplied in a 32-lead Very Small Outline Package (VSOP), 8 mm × 14 mm body, with standard JEDEC-compliant pinout and gull-wing leads. This RoHS-compliant surface-mount package supports automated assembly and offers thermal performance suitable for convection-cooled industrial PCBs.
| 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 within 256K × 8 map. |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel data path for read/write operations; high-impedance when CE or OE is deasserted. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access; controls device power state. |
| OE | Output Enable | Active-low output gate; used with CE to prevent bus contention during shared-memory access. |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming. |
| RESET | Reset Input | Active-low hardware reset; also accepts 12V ±0.5V for boot-block lockout override - functional in AT49LV002-12VC. |
| VCC | Power Supply | +3.0 V to +3.6 V supply; powers core logic and memory array; decoupling capacitor required per datasheet. |
| GND | Ground Reference | Signal and power ground reference; requires low-impedance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Single 3.3V supply operation | Eliminates need for dual-voltage rails or charge pumps - simplifies power design and reduces BOM cost. |
| Boot block programming lockout | 16K-byte protected region (00000H–03FFFH) prevents accidental overwrite of critical startup code during field updates. |
| Sector-erasable architecture | Independent erasure of parameter blocks (8K each) and main memory blocks enables modular firmware management. |
| Hardware data protection | VCC sense, noise filtering, and control-line interlock prevent spurious writes due to power transients or EMI. |
| Standard EPROM-compatible interface | Uses CE/OE/WE control signals identical to EPROMs - enables drop-in replacement in legacy designs. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Retention |
|---|---|
Use Scenario: Storing immutable bootloader and safety-critical initialization routines in programmable logic controllers subject to frequent firmware updates. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing deterministic startup sequence execution before main application loads. Use Value: Boot block lockout ensures certified firmware integrity remains unaltered during customer-initiated application upgrades. |
Use Scenario: Holding FDA-certified boot code and calibration tables in portable diagnostic instruments requiring traceable, tamper-resistant storage. IC Role / Device Role / Timing Role: Secure, field-updatable code repository with hardware-enforced write protection for regulatory compliance. Use Value: 10,000-cycle endurance and DATA polling support robust, auditable firmware lifecycle management. |
| Automotive Body Control Module | Networking Equipment Configuration |
Use Scenario: Hosting vehicle-specific configuration data and low-level CAN communication stacks in body control units operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Temperature-stable Flash memory interfacing directly with 8-bit automotive MCUs via parallel bus. Use Value: 120 ns access time and industrial-grade VCC tolerance ensure real-time response under battery-voltage fluctuations. |
Use Scenario: Storing switch/router configuration profiles and FPGA bitstreams in enterprise networking hardware requiring hot-swappable firmware patches. IC Role / Device Role / Timing Role: In-system reprogrammable storage accessible via system controller's memory-mapped I/O space. Use Value: Sector-erase capability allows updating configuration partitions without disrupting active packet-forwarding functions. |
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 (512K × 8), 70 ns access, 3.0–3.6V supply; lacks boot-block lockout but supports CFI query mode. | Higher capacity suits larger firmware images; absence of dedicated boot protection requires external software safeguards. | Select when >2 Mbit capacity is needed and boot security is managed at firmware level. |
| MX29LV002CTC-70G | 2-Mbit, 70 ns access, same 3.0–3.6V range; includes hardware write protect (WP#) pin but no 12V RESET override. | Hardware WP# simplifies board-level protection; missing 12V override limits recovery options if boot lock is accidentally enabled. | Prefer for cost-sensitive designs where guaranteed boot-block recoverability is not required. |
Compared with SST39VF020-70-4C-NHE and MX29LV002CTC-70G, AT49LV002-12VC provides unique 12V RESET-based boot-block unlock and precisely matched 2-Mbit/120ns timing - making it optimal for legacy-compatible, safety-critical reprogramming scenarios where field recovery and timing margin are prioritized over raw speed or density.
Availability
AT49LV002-12VC is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive electronics requiring stable component supply, long-lifecycle support, and guaranteed availability of mature Flash memory solutions.
Supply support for AT49LV002-12VC 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 the legacy AT49LV series. The company specializes in microcontrollers, analog, Flash memory, and security ICs for industrial, automotive, and consumer markets.
The AT49LV002 product line was designed specifically for embedded systems requiring in-system reprogrammable nonvolatile storage with hardware-enforced boot-code protection and industry-standard parallel interface compatibility.
FAQ
What is the operating voltage range for AT49LV002-12VC?
The AT49LV002-12VC operates exclusively from a 3.0 V to 3.6 V supply. Unlike the BV variant (2.7–3.6 V), the LV suffix denotes strict 3.0–3.6 V compatibility - ensuring stable operation in 3.3V systems without brown-out risk. This range is validated across the full commercial temperature range (0°C to 70°C).
Does AT49LV002-12VC support boot block protection, and how is it enabled?
Yes, AT49LV002-12VC includes a 16K-byte boot block (00000H–03FFFH) with programmable lockout. Protection is enabled via a six-cycle command sequence (5555H/AAH → 2AAAH/55H → 5555H/80H → 5555H/AAH → 2AAAH/55H → 5555H/40H). Once activated, the boot block cannot be erased or programmed using ≤5.5V signals - only a 12V pulse on RESET can override it.
What package type is used for AT49LV002-12VC, and what are its key mechanical features?
AT49LV002-12VC uses a 32-lead Very Small Outline Package (VSOP) measuring 8 mm × 14 mm. It features gull-wing leads, JEDEC-standard footprint, and RoHS compliance. The VSOP offers superior thermal dissipation and board-space efficiency compared to PDIP or PLCC, making it ideal for compact industrial PCBs.
How does AT49LV002-12VC indicate completion of a byte programming cycle?
AT49LV002-12VC provides two hardware methods: DATA polling (reading the programmed byte returns its complement on I/O7 until completion, then true data) and Toggle Bit (I/O6 toggles between 0 and 1 during programming and stops upon completion). Both methods eliminate polling delays and enable deterministic host firmware timing.
Is AT49LV002-12VC pin-compatible with other members of the AT49BV/LV002 family?
Yes - all AT49BV/LV002(N)(T) variants share identical 32-pin pinouts across PLCC, PDIP, TSOP, and VSOP packages. AT49LV002-12VC matches the VSOP (32V) footprint of AT49LV002-70VC and AT49LV002-90VC, differing only in access time (120 ns) and operating voltage range (3.0–3.6 V), with no layout changes required for speed-grade migration.
AT49LV002-12VC 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:
- 120 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VSOP
AT49LV002-12VC FAQ
1.How can I place an order for AT49LV002-12VC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV002-12VC 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 AT49LV002-12VC reliable?
The price and inventory of AT49LV002-12VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV002-12VC is usually 5 days.
3.What payment methods are accepted for AT49LV002-12VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV002-12VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV002-12VC?
AT49LV002-12VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV002-12VC 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 AT49LV002-12VC?
For technical support, including AT49LV002-12VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV002-12VC requirements.
6.How does Aetrix verify that AT49LV002-12VC is sourced from the original manufacturer or authorized distributors?
All AT49LV002-12VC 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 AT49LV002-12VC meets industry standards.
7.What is the process for return or replacement of AT49LV002-12VC?
All AT49LV002-12VC units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV002-12VC, 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 AT49LV002-12VC part is unused and in its original packaging.
Return procedure for AT49LV002-12VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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