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Microchip Technology AT49LV002-12TC
- Part No.:
- AT49LV002-12TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49LV002-12TC.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,705
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Product details
Overview
AT49LV002-12TC from Atmel is a 2-Mbit (256K × 8) single-supply 3.0–3.6V Flash memory IC used for nonvolatile code and data storage in embedded microcontroller systems. It delivers 120 ns read access time, supports byte-by-byte programming (30 µs/byte typical), features sector-based erase architecture (including 16K-byte boot block with lockout), and operates across commercial temperature range (0°C to 70°C) in 32-lead TSOP package.
For engineers reviewing the AT49LV002-12TC datasheet, AT49LV002-12TC pinout, AT49LV002-12TC application, or AT49LV002-12TC equivalent, this page provides verified technical context, validated pin functions, real-world use cases in firmware storage and parameter retention, and confirmed alternative parts with documented functional and interface differences.
Technical Context
The AT49LV002-12TC implements a standard parallel Flash interface with CE/OE/WE control logic, enabling EPROM-like read operation and command-driven erase/program cycles. Its internal architecture includes dedicated boot, parameter, and main memory blocks - with boot block address range 3C000H–3FFFFH - and hardware data protection via VCC sense, noise filtering, and input-level inhibition.
It uses Atmel's nonvolatile CMOS process to achieve 10,000 write/erase cycles and supports DATA polling (I/O7 complement) and Toggle Bit (I/O6) methods for end-of-program detection. The device requires no high-voltage programming supply and executes all operations using standard 5V-compatible command sequences applied via address/data bus.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256K × 8), organized as 262,144 words × 8 bits - sufficient for boot code + configuration data in 8-bit MCU systems. |
| Read Access Time | 120 ns - defines maximum clock rate compatibility with legacy 8051 or Z80-based controllers running ≤8 MHz. |
| Supply Voltage | 3.0 V to 3.6 V - compatible with 3.3V system rails without level-shifting; excludes lower 2.7V range supported by BV variants. |
| Active Current | 25 mA - determines power budget impact during firmware update or boot-time reads. |
| Standby Current | 50 µA CMOS - enables low-power retention in battery-backed applications like smart meters or portable diagnostics. |
| Erase Time | 10 seconds (chip or sector) - sets minimum firmware update latency; sector erase allows partial reprogramming without full chip reset. |
| Programming Speed | 30 µs/byte typical - supports incremental field updates; faster than EEPROM but slower than modern NOR Flash. |
| Endurance | 10,000 write/erase cycles - suitable for infrequent firmware upgrades, not for logging or wear-leveling applications. |
Pinout & Package
AT49LV002-12TC is housed in a 32-lead Thin Small Outline Package (TSOP), Type 1, with 8 mm × 20 mm footprint and gull-wing leads. Pin 1 is located at top-left corner when notch faces upward.
| 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 map. |
| I/O0–I/O7 | Data Inputs/Outputs | Bi-directional 8-bit data bus; latched on rising edge of WE/CE during programming; tri-stated when CE or OE high. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access; prevents bus contention in multi-device systems. |
| OE | Output Enable | Active-low output control; used with CE to gate data outputs; high impedance when asserted alone (write mode). |
| WE | Write Enable | Active-low write strobe; initiates command latching on falling edge; controls timing of program/erase cycles. |
| RESET | Reset Input | Active-low system reset; halts ongoing operations and forces high-Z outputs; 12V override enables boot block reprogramming if lockout enabled. |
| VCC | Power Supply | +3.0 V to +3.6 V supply; powers core logic and I/O buffers; decoupling capacitor required per datasheet layout guidelines. |
| GND | Ground | Reference return path for all signals and power; must be low-inductance connection to minimize noise coupling during erase pulses. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture with Boot Block Lockout | Enables secure firmware storage: 16K-byte boot sector (3C000H–3FFFFH) can be permanently protected against accidental overwrite after lockout activation. |
| DATA Polling & Toggle Bit Detection | Eliminates need for fixed delay timers during programming: I/O7 complement or I/O6 toggling signals completion, improving system responsiveness and reliability. |
| Hardware Data Protection | Prevents spurious writes via VCC monitoring (<1.8V inhibits programming), noise filtering (<15 ns pulse rejection), and control-line interlock (OE low/CE high/WE high disables writes). |
| Single 3.0–3.6V Supply Operation | Removes requirement for dual-voltage rails or charge pumps - simplifies power design and reduces BOM cost in 3.3V embedded platforms. |
| Standard Command Set Compatibility | Uses industry-standard 6-byte erase and 4-byte program sequences (e.g., 5555H/2AAAH), ensuring interoperability with generic Flash programmers and bootloader firmware. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Retention |
|---|---|
Use Scenario: Storing boot loader and application firmware in programmable logic controllers where field updates occur annually. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast 120 ns read access to support deterministic boot timing in real-time control loops. Use Value: Boot block lockout prevents corruption of critical startup code during remote firmware patches, ensuring system recoverability after failed updates. |
Use Scenario: Holding calibration parameters and user preferences in portable diagnostic equipment powered by Li-ion batteries. IC Role / Device Role / Timing Role: Low-power parameter memory with 50 µA standby current, enabling multi-week battery life in sleep mode. Use Value: Sector erase capability allows selective reprogramming of calibration tables without disturbing stored patient history or safety-critical firmware. |
| Automotive Body Control Module (BCM) | Point-of-Sale Terminal Boot Code |
Use Scenario: Storing vehicle-specific configuration data (e.g., door lock behavior, lighting profiles) in BCMs operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade Flash memory rated for extended temperature range; supports in-system reprogramming via CAN-based bootloader. Use Value: 10,000-cycle endurance exceeds lifetime requirement for dealer-level recalibration events; TSOP package ensures mechanical robustness under vibration. |
Use Scenario: Hosting secure boot code and payment stack initialization routines in PCI-compliant retail terminals. IC Role / Device Role / Timing Role: Secure code execution anchor with hardware-enforced boot block protection against malware injection. Use Value: 12V RESET override allows authorized service technicians to restore corrupted boot sectors without chip replacement, reducing field repair time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF020-120-4C-NHE | 2 Mbit, 120 ns access, 3.0–3.6V supply, same TSOP-32 package; supports CFI query and faster 18 µs/byte programming. | No boot block lockout; uses uniform 4K-sector erase instead of asymmetric block structure. | Select when standardized CFI interface and higher programming speed are prioritized over secure boot partitioning. |
| MX29LV002CTTI-12G | 2 Mbit, 120 ns, 3.0–3.6V, TSOP-32; includes hardware write protection (WP# pin) and 100K endurance rating. | Lacks RESET-based boot override; uses different command set (no 12V RESET unlock); boot sector at 00000H–03FFFH (not top-aligned). | Choose for enhanced endurance and external WP# control, but verify bootloader compatibility due to differing boot address mapping and command protocol. |
Compared with SST39VF020-120-4C-NHE and MX29LV002CTTI-12G, the AT49LV002-12TC offers unique top-aligned boot block (3C000H–3FFFFH) with 12V RESET override - critical for secure recovery in safety-critical firmware stacks - while trading off CFI compliance and cycle endurance for proven Atmel command-set interoperability in legacy designs.
Availability
AT49LV002-12TC is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive body electronics requiring stable component supply, long-term obsolescence management, and traceable sourcing for safety-certified designs.
Supply support for AT49LV002-12TC 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
Atmel Corporation (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, Flash memory, and secure authentication devices for embedded systems.
The AT49LV002-12TC belongs to Atmel's legacy parallel Flash memory product line, designed specifically for in-system reprogrammability in 8-bit and 16-bit microcontroller platforms requiring reliable, low-voltage nonvolatile storage without external high-voltage circuitry.
FAQ
What is the memory organization of the AT49LV002-12TC?
The AT49LV002-12TC contains 2 megabits of Flash memory organized as 262,144 words × 8 bits (256K × 8). Its physical address space spans 00000H to 3FFFFH, with the boot block located at 3C000H–3FFFFH, two 8K-byte parameter blocks, and two main memory blocks totaling 224K bytes. This layout supports segregated firmware and configuration storage.
Does the AT49LV002-12TC support in-system programming without high voltage?
Yes, the AT49LV002-12TC supports full in-system reprogramming using only its 3.0–3.6V supply rail. All erase and program operations are initiated via standard 5V-compatible command sequences written to specific address locations (e.g., 5555H/2AAAH), eliminating the need for external 12V programming supplies or dedicated programmers.
How does the boot block lockout feature work on the AT49LV002-12TC?
The AT49LV002-12TC's boot block lockout is activated by a six-cycle command sequence (5555H/AA, 2AAAH/55, 5555H/80, etc.). Once enabled, the 16K-byte boot sector (3C000H–3FFFFH) becomes immune to erase or program commands at ≤5.5V. A 12V pulse on RESET overrides lockout for authorized recovery - a capability absent in N-suffix variants.
What package type and pin count does the AT49LV002-12TC use?
The AT49LV002-12TC is supplied in a 32-lead Thin Small Outline Package (TSOP), Type 1, with 8 mm × 20 mm dimensions and gull-wing leads. It shares pinout compatibility with other AT49BV/LV002(N)(T) family members in TSOP, PLCC, PDIP, and VSOP packages - enabling drop-in substitution within the same package variant.
Can the AT49LV002-12TC be used in industrial temperature applications?
No - the AT49LV002-12TC is specified only for commercial temperature range (0°C to 70°C), as indicated by the "C" suffix in its ordering code. For industrial operation (-40°C to +85°C), the correct variant is AT49LV002-12TI (TSOP) or AT49LV002-12JI (PLCC), both of which share identical electrical specs but undergo extended temperature screening.
AT49LV002-12TC 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
AT49LV002-12TC FAQ
1.How can I place an order for AT49LV002-12TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV002-12TC 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 AT49LV002-12TC reliable?
The price and inventory of AT49LV002-12TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV002-12TC is usually 5 days.
3.What payment methods are accepted for AT49LV002-12TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV002-12TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV002-12TC?
AT49LV002-12TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV002-12TC 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 AT49LV002-12TC?
For technical support, including AT49LV002-12TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV002-12TC requirements.
6.How does Aetrix verify that AT49LV002-12TC is sourced from the original manufacturer or authorized distributors?
All AT49LV002-12TC 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 AT49LV002-12TC meets industry standards.
7.What is the process for return or replacement of AT49LV002-12TC?
All AT49LV002-12TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV002-12TC, 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 AT49LV002-12TC part is unused and in its original packaging.
Return procedure for AT49LV002-12TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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