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Microchip Technology AT49LV002-12JC
- Part No.:
- AT49LV002-12JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49LV002-12JC.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,614
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Product details
Overview
AT49LV002-12JC 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 and data storage in embedded microcontroller systems. It delivers 120 ns read access time, 10-second chip erase, byte-programmable operation (30 µs/byte typical), and hardware data protection - enabling secure boot code storage in industrial control firmware updates.
For engineers reviewing the AT49LV002-12JC datasheet, AT49LV002-12JC pinout, AT49LV002-12JC application, or AT49LV002-12JC equivalent, key selection considerations include its PLCC-32 package, boot block programming lockout feature, sector-based erase architecture (16K boot + two 8K parameter + two main memory blocks), and compatibility with standard EPROM-like CE/OE/WE bus interface timing.
Technical Context
The AT49LV002-12JC implements a command-register-based architecture requiring six-byte software sequences for chip/sector erase and boot lockout enablement. Its internal program control logic eliminates need for external high-voltage programming signals, supporting 5V-only command inputs while operating from 3.0–3.6 V.
It features dual erase modes: full-chip erase (10 s max) and sector-selectable erase targeting discrete 8K parameter blocks or 96K/128K main memory blocks. The boot block (16K bytes, address range 00000H–03FFFH) supports permanent lockout via command sequence, with optional 12 V RESET override for reprogramming - though this override is disabled on N-suffix variants (not applicable to AT49LV002-12JC).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits - sufficient for bootloader + configuration data in 8-bit/16-bit MCU systems. |
| Read Access Time | 120 ns maximum - defines minimum bus cycle duration for reliable instruction fetch or data read in timing-critical applications. |
| Supply Voltage Range | 3.0 V to 3.6 V - compatible with 3.3 V system rails without level-shifting; excludes 2.7 V operation (LV variant only supports ≥3.0 V). |
| Active Current | 25 mA typical - determines power budget impact during active read/program cycles in battery-sensitive or thermally constrained designs. |
| Standby Current | 50 µA CMOS - enables low-power retention mode during system sleep, critical for energy-efficient embedded devices. |
| Erase Cycle Time | 10 seconds maximum for full chip erase - sets firmware update latency ceiling when rewriting entire memory image. |
| Endurance | 10,000 write/erase cycles - specifies maximum field-upgrade count before wear-out risk in long-lifecycle industrial equipment. |
Pinout & Package
AT49LV002-12JC is housed in a 32-lead Plastic J-Leaded Chip Carrier (PLCC) package with standard 0.5-inch body size and J-bend leads for socket or surface-mount assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A0–A17 directly map to memory location selection. |
| I/O0–I/O7 | Data Input/Output Bus | 8-bit bidirectional data path for read, program, and command loading; electrically compatible with TTL/CMOS logic levels. |
| 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; places I/O pins in high-impedance state when high, enabling shared data bus operation. |
| WE | Write Enable | Active-low write strobe; initiates command latching, byte programming, or erase sequencing when CE is low and OE is high. |
| RESET | Reset Input | Active-low hardware reset; halts ongoing operations and forces high-Z outputs; 12 V input enables boot block override (supported on AT49LV002-12JC). |
| VCC | Power Supply | +3.0 V to +3.6 V supply input; powers core logic, charge pumps, and I/O buffers - requires local decoupling per layout guidelines. |
| GND | Ground Reference | Primary signal and power return path; must be low-inductance connection to minimize noise coupling into sensitive flash operations. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16K-byte protected region (00000H–03FFFH) prevents accidental overwrite of bootloader code; enabled via 6-cycle command sequence. |
| Data Polling & Toggle Bit | Real-time program/erase completion detection via I/O7 complement or I/O6 toggling - eliminates need for fixed delay timers in host firmware. |
| Sector Erase Architecture | Independent erasure of two 8K parameter blocks and two main memory blocks (96K/128K) enables granular firmware updates without full chip erase. |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulse rejection), and control-line interlock (OE low/CE high/WE high blocks writes) prevent spurious writes. |
| In-System Reprogrammability | No external high-voltage programming required; uses standard 3.3 V I/O levels and 5V-only command protocol - simplifies field upgrade infrastructure. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing certified bootloader and safety-critical initialization routines in programmable logic controllers subject to IEC 61508 SIL-2 requirements. IC Role / Device Role / Timing Role: Nonvolatile code storage with hardware-enforced boot block protection ensures bootloader integrity across power cycles and firmware updates. Use Value: Prevents unauthorized or corrupted bootloader execution via permanent lockout - meeting functional safety requirement for fail-safe startup behavior. |
Use Scenario: Holding FDA-validated boot code and calibration data in portable diagnostic instruments requiring traceable firmware revision control. IC Role / Device Role / Timing Role: Secure, field-upgradable memory with DATA polling support for deterministic update timing in battery-powered handheld devices. Use Value: Enables verified over-the-air (OTA) updates with guaranteed 10,000-cycle endurance and 50 µA standby current for multi-year device service life. |
| Automotive Body Control Module | Communications Equipment Configuration |
Use Scenario: Storing vehicle-specific configuration tables and CAN message routing logic in body control units operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Temperature-rated Flash memory with 120 ns read timing for real-time response to door lock/unlock commands and lighting control events. Use Value: Meets AEC-Q100 stress test requirements for automotive grade reliability while supporting in-vehicle reprogramming via diagnostic port. |
Use Scenario: Retaining network stack parameters, encryption keys, and MAC address tables in enterprise switches and routers undergoing remote firmware upgrades. IC Role / Device Role / Timing Role: Sector-erasable nonvolatile memory allowing selective update of configuration sectors without disrupting active packet forwarding functions. Use Value: Reduces downtime during maintenance windows by enabling partial memory rewrite - avoiding full reboot and service interruption. |
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 access, PLCC-32; lacks boot block lockout and 12 V RESET override. | Supports faster read but no hardware-protected boot sector - unsuitable where bootloader integrity is mandated. | Select when speed > security; verify host firmware implements software-based boot protection. |
| MX29LV002CTTI-12 | 3.0–3.6 V, 2 Mbit, 120 ns access, PLCC-32; includes boot block protection but no 12 V override capability. | Matches AT49LV002-12JC timing and package but cannot reprogram locked boot block - limits field recovery options. | Prefer for cost-sensitive designs where boot block is written once and never updated post-deployment. |
Compared with SST39VF020-70-4C-NHE and MX29LV002CTTI-12, the AT49LV002-12JC uniquely combines 120 ns timing, hardware-enforced boot lockout, and 12 V RESET override - delivering both deterministic performance and field-recoverable security for mission-critical embedded systems.
Availability
AT49LV002-12JC is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive electronics requiring stable component supply with long-term lifecycle assurance and consistent PLCC-32 packaging.
Supply support for AT49LV002-12JC 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 legacy Flash memory product lines including the AT49LV series, emphasizing reliability, longevity, and industrial-grade qualification.
The AT49LV002-12JC belongs to Atmel's Battery-Voltage™ Flash family, designed specifically for 3.3 V embedded systems needing in-system reprogrammability, robust data retention, and hardware-level security for boot code storage.
FAQ
What is the memory organization and density of the AT49LV002-12JC?
The AT49LV002-12JC provides 2 megabits (256K × 8) of Flash memory, organized as 262,144 words by 8 bits. This structure supports byte-wide data access and is optimized for storing firmware images, configuration tables, and boot code in 8-bit and 16-bit microcontroller systems. Its density balances cost and capacity for mid-tier embedded applications.
Does the AT49LV002-12JC support hardware boot block protection?
Yes, the AT49LV002-12JC includes a dedicated 16K-byte boot block (addresses 00000H–03FFFH) with programmable lockout. Once enabled via a six-cycle command sequence, this region becomes immune to erase and program operations at standard voltage levels - ensuring bootloader integrity. The AT49LV002-12JC also supports 12 V RESET override for emergency reprogramming.
What package type and pin count does the AT49LV002-12JC use?
The AT49LV002-12JC is supplied in a 32-lead Plastic J-Leaded Chip Carrier (PLCC) package, designated as 32J in Atmel/Microchip documentation. This surface-mountable package features a square body with J-bend leads, compatible with standard PLCC sockets and reflow soldering processes used in industrial PCB assembly.
How does the AT49LV002-12JC indicate completion of a program or erase operation?
The AT49LV002-12JC provides two hardware methods: DATA polling (I/O7 returns complement of loaded data until completion, then true data) and Toggle Bit detection (I/O6 toggles between 0 and 1 during operation, then stabilizes). Both mechanisms allow host firmware to poll status without fixed delays - improving update efficiency and determinism in real-time systems using the AT49LV002-12JC.
What is the maximum erase time and endurance rating for the AT49LV002-12JC?
The AT49LV002-12JC has a maximum full-chip erase time of 10 seconds and guarantees a minimum of 10,000 program/erase cycles per memory location. These specifications are validated across the commercial temperature range (0°C to +70°C) and define the operational lifespan and update latency boundaries for systems relying on the AT49LV002-12JC for field-upgradable firmware storage.
AT49LV002-12JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- 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-PLCC (13.97x11.43)
AT49LV002-12JC FAQ
1.How can I place an order for AT49LV002-12JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV002-12JC 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 AT49LV002-12JC reliable?
The price and inventory of AT49LV002-12JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV002-12JC is usually 5 days.
3.What payment methods are accepted for AT49LV002-12JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV002-12JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV002-12JC?
AT49LV002-12JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV002-12JC 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 AT49LV002-12JC?
For technical support, including AT49LV002-12JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV002-12JC requirements.
6.How does Aetrix verify that AT49LV002-12JC is sourced from the original manufacturer or authorized distributors?
All AT49LV002-12JC 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 AT49LV002-12JC meets industry standards.
7.What is the process for return or replacement of AT49LV002-12JC?
All AT49LV002-12JC units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV002-12JC, 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 AT49LV002-12JC part is unused and in its original packaging.
Return procedure for AT49LV002-12JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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