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Microchip Technology AT49LV002N-12TC
- Part No.:
- AT49LV002N-12TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49LV002N-12TC.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,263
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Product details
Overview
AT49LV002N-12TC 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 firmware storage and boot code retention in embedded microcontroller systems. It delivers 120 ns read access time, supports sector-based erase with 16 KB boot block lockout, and operates across commercial temperature range (0°C to 70°C) in 32-lead TSOP package.
For engineers reviewing the AT49LV002N-12TC datasheet, AT49LV002N-12TC pinout, AT49LV002N-12TC application, or AT49LV002N-12TC equivalent, key selection criteria include boot-sector write protection, byte-programmable timing (30 µs/byte), hardware data protection (VCC sense, noise filtering), and compatibility with standard CE/OE/WE bus control protocols.
Technical Context
The AT49LV002N-12TC implements a sector-architected Flash array with one 16 KB boot block (address 00000H–03FFFH), two 8 KB parameter blocks, and two main memory blocks (96 KB and 128 KB). It uses standard microprocessor-compatible command sequences - including 4-cycle byte programming and 6-cycle sector/chip erase - without requiring high-voltage programming inputs.
Its internal control logic handles erase timing autonomously, supports DATA polling (I/O7 complement) and Toggle Bit (I/O6) status detection, and enforces hardware safeguards: VCC sense below 1.8 V inhibits programming, and sub-15 ns noise pulses on WE/CE are filtered out. The RESET pin is DC-connected (not functional for boot override).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits |
| Supply Voltage | 3.0 V to 3.6 V - enables direct interface with 3.3 V logic without level shifting |
| Read Access Time | 120 ns - defines maximum sustained read throughput in synchronous bus environments |
| Byte Programming Time | 30 µs typical - determines minimum latency between successive byte writes during firmware updates |
| Erase Cycle Time | 10 seconds max - sets worst-case delay for full-chip or sector erase operations |
| Endurance | 10,000 program/erase cycles - specifies guaranteed rewrite lifetime before wear-out |
| Standby Current | 50 µA CMOS - ensures ultra-low power retention during system sleep modes |
Pinout & Package
AT49LV002N-12TC is housed 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 9 is NC (No Connect); all other pins match standard parallel Flash interface mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing (00000H–3FFFFH) |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface for read data output and program data input |
| 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 gate; controls data bus tristate to prevent bus contention |
| WE | Write Enable | Active-low write strobe; latches address/data during programming/erase command cycles |
| RESET | Reset Input | DC-connected (non-functional for boot override); places outputs in high-Z on low assertion |
| VCC | Power Supply | 3.0–3.6 V core supply; powers internal logic, charge pumps, and I/O buffers |
| GND | Ground | Reference return path for all digital and analog circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16 KB protected region (00000H–03FFFH) prevents accidental overwrite of critical boot code via software command |
| Data Polling & Toggle Bit | Real-time programming/erase completion detection using I/O7 complement or I/O6 toggle - eliminates need for fixed delay timers |
| Hardware Data Protection | VCC sense, WE/CE noise filtering (<15 ns), and control-line inhibition (OE low/CE high/WE high) prevent spurious writes |
| Sector Erase Flexibility | Independent erasure of two 8 KB parameter blocks and two main memory blocks enables granular firmware partitioning |
| Single 3.3 V Operation | No external 5 V or 12 V required - simplifies power design and eliminates level translators in 3.3 V systems |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing bootloader and configuration parameters in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with sector-erase capability and boot-block lockout to ensure safe field upgrades without corrupting startup routines. Use Value: Prevents system failure during partial firmware updates by isolating boot code from user-modifiable parameter and application memory blocks. | Use Scenario: Holding certified boot firmware and calibration data in portable diagnostic equipment requiring regulatory-compliant data integrity. IC Role / Device Role / Timing Role: Secure, low-power Flash memory with hardware write protection and 10,000-cycle endurance for long-life medical deployments. Use Value: Enables traceable, auditable firmware updates while meeting IEC 62304 requirements for protected boot execution and data retention. |
| Automotive Body Control Module | Networking Equipment Configuration Memory |
Use Scenario: Storing vehicle-specific configuration tables and diagnostic routines in body control units operating across -40°C to +85°C industrial range. IC Role / Device Role / Timing Role: Automotive-grade parallel Flash memory with 120 ns read timing and robust noise immunity for CAN/LIN subsystem integration. Use Value: Supports deterministic boot timing and reliable over-the-air update rollback via protected boot sector and parameter block isolation. | Use Scenario: Maintaining persistent switch/router configuration, MAC tables, and firmware patches in enterprise networking hardware. IC Role / Device Role / Timing Role: High-reliability, byte-programmable Flash used for dynamic configuration storage with fast 30 µs write cycles. Use Value: Allows real-time parameter updates without full device reboot, leveraging sector erase to preserve active configuration while modifying runtime settings. |
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 | 512K × 8 (4 Mbit), 70 ns access, 3.0–3.6 V, same 32-pin TSOP package | Larger density but no boot-block lockout; uses different command set (SST proprietary) | Select when higher capacity is needed and boot protection is managed externally or via software-only methods. |
| MX29LV002CTTI-12 | 256K × 8 (2 Mbit), 120 ns access, 3.0–3.6 V, 32-pin TSOP; supports CFI query mode | CFI-compliant with standardized JEDEC ID readout; lacks dedicated boot-block lockout command | Prefer for designs requiring automated flash detection and toolchain interoperability, accepting manual sector protection implementation. |
Compared with SST39VF020-70-4C-NHE and MX29LV002CTTI-12, the AT49LV002N-12TC uniquely integrates hardware-enforced boot-block lockout with deterministic 120 ns timing and DC-connected RESET - making it optimal for safety-critical boot storage where firmware integrity is non-negotiable.
Availability
AT49LV002N-12TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, and automotive body control module applications requiring stable component supply, long-term lifecycle support, and verified second-source alternatives.
Supply support for AT49LV002N-12TC 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 AT49LV002N-12TC belongs to Atmel's Battery-Voltage™ Flash family, designed specifically for 3.3 V embedded systems requiring in-system reprogrammability, sector-level erase granularity, and hardware-based data protection.
FAQ
What is the function of the RESET pin on the AT49LV002N-12TC?
The RESET pin on the AT49LV002N-12TC is DC-connected and functions solely as a hardware reset input: asserting it low places outputs in high-impedance state and halts ongoing operations. Unlike the T-suffix variants, it does not support 12 V boot-block override. Its primary role is system-level synchronization during power-up or fault recovery sequences in the AT49LV002N-12TC.
Does the AT49LV002N-12TC support true 3.3 V-only operation without 5 V or 12 V inputs?
Yes, the AT49LV002N-12TC operates exclusively from a 3.0–3.6 V supply and requires no auxiliary high voltages. All programming and erase commands use standard 3.3 V logic levels; internal charge pumps generate necessary high voltages. This eliminates level shifters and simplifies power design - a defining feature of the AT49LV002N-12TC versus older 5 V Flash devices.
How is boot block protection enabled on the AT49LV002N-12TC?
Boot block protection on the AT49LV002N-12TC is enabled via a six-cycle software command sequence: load AAH at 5555H, 55H at 2AAAH, 80H at 5555H, then AAH/55H/40H at 5555H/2AAAH/5555H. Once activated, the 16 KB boot block (00000H–03FFFH) becomes permanently write-protected under normal 3.3 V operation - a core security mechanism of the AT49LV002N-12TC.
What are the valid sector erase address ranges for the AT49LV002N-12TC?
The AT49LV002N-12TC supports sector erase at: Parameter Block 1 (04000H–05FFFH), Parameter Block 2 (06000H–07FFFH), Main Memory Block 1 (08000H–1FFFFH), and Main Memory Block 2 (20000H–3FFFFH). The boot block (00000H–03FFFH) cannot be erased when lockout is enabled. These addresses are fixed for the N-suffix variant and differ from the T-suffix layout - a critical distinction for correct AT49LV002N-12TC firmware partitioning.
Can the AT49LV002N-12TC be used in place of the AT49BV002N-12TC?
The AT49LV002N-12TC and AT49BV002N-12TC share identical pinout, timing, and command set but differ in voltage range: AT49LV002N-12TC requires 3.0–3.6 V, while AT49BV002N-12TC supports 2.7–3.6 V. Substituting AT49LV002N-12TC into a 2.7 V system may cause functional failure. Always verify VCC compliance before replacement - the AT49LV002N-12TC is not a drop-in substitute in battery-powered 2.7 V applications.
AT49LV002N-12TC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT49LV002N-12TC FAQ
1.How can I place an order for AT49LV002N-12TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV002N-12TC 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 AT49LV002N-12TC reliable?
The price and inventory of AT49LV002N-12TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV002N-12TC is usually 5 days.
3.What payment methods are accepted for AT49LV002N-12TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV002N-12TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV002N-12TC?
AT49LV002N-12TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV002N-12TC 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 AT49LV002N-12TC?
For technical support, including AT49LV002N-12TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV002N-12TC requirements.
6.How does Aetrix verify that AT49LV002N-12TC is sourced from the original manufacturer or authorized distributors?
All AT49LV002N-12TC 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 AT49LV002N-12TC meets industry standards.
7.What is the process for return or replacement of AT49LV002N-12TC?
All AT49LV002N-12TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV002N-12TC, 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 AT49LV002N-12TC part is unused and in its original packaging.
Return procedure for AT49LV002N-12TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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