My Inquiry
My Account
Microchip Technology AT49LV002-12TI
- Part No.:
- AT49LV002-12TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49LV002-12TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,691
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49LV002-12TI 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 operation (30 µs/byte typical), and hardware data protection - enabling secure boot code retention in industrial control firmware updates.
For engineers reviewing the AT49LV002-12TI datasheet, AT49LV002-12TI pinout, AT49LV002-12TI application, or AT49LV002-12TI equivalent, key selection criteria include its 32-pin TSOP package, boot block lockout capability (3C000–3FFFFH), DATA polling/Toggle Bit end-of-write detection, and compatibility with standard 5V-command protocols despite 3.3V-only operation.
Technical Context
This device implements a sector-architected Flash array with one 16K-byte boot block (address 3C000–3FFFFH), two 8K-byte parameter blocks, and two main memory blocks (96K + 128K bytes). Its command interface uses standard microprocessor CE/OE/WE timing with six-cycle sequences for chip/sector erase and boot lock enable.
Operation relies on internal voltage generation for programming - no external high-voltage supply required - and includes VCC sense, noise filtering (<15 ns pulse rejection), and RESET-driven boot override (12V on RESET pin). The device supports both hardware and software product identification (Manufacturer Code 1FH, Device Code 08H).
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 resource-constrained MCU systems. |
| Read Access Time | 120 ns max - meets timing requirements for 8 MHz Z80, 68K, or early ARM7 bus interfaces without wait states. |
| Supply Voltage | 3.0 V to 3.6 V - compatible with 3.3V logic families and battery-backed industrial power rails. |
| Byte Programming Time | 30 µs typical - enables rapid field firmware patching without system downtime. |
| Erase Cycle Time | 10 seconds max for full chip erase - deterministic timing simplifies host controller timeout handling. |
| End-of-Write Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - eliminates need for fixed delays during programming. |
| Write Endurance | 10,000 program/erase cycles - validated for long-life industrial logging and configuration storage. |
Pinout & Package
AT49LV002-12TI is supplied in a 32-lead Thin Small Outline Package (TSOP, Type 1, 8 × 20 mm), pin-compatible with industry-standard 32-pin Flash memory footprints.
| 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, A17 selects upper/lower half of memory map. |
| I/O0–I/O7 | Data Input/Output | Bi-directional 8-bit data bus; supports true read-modify-write cycles and DATA polling on I/O7/I/O6. |
| 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; allows memory sharing on common data bus without tri-state conflicts. |
| WE | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per command sequence timing. |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-Z outputs; 12V input enables boot block reprogramming even when lockout is active. |
| VCC | Power Supply | +3.0 to +3.6 V supply; powers internal charge pump for programming/erase - no external HV required. |
| GND | Ground | Reference for all I/O and internal circuitry; requires low-impedance connection to minimize noise during erase pulses. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Lockout | 16K-byte protected region (3C000–3FFFFH) with programmable lockout - ensures bootloader integrity during field firmware updates. |
| Hardware Data Protection | VCC sense (<1.8V inhibits programming), noise filtering (<15 ns pulses ignored), and CE/OE/WE state validation - prevents accidental writes during power transients. |
| Sector Erase Flexibility | Independent erasure of two 8K parameter blocks and two main memory blocks (96K/128K) - enables selective firmware module updates without full chip erase. |
| Standard Command Interface | 6-cycle command sequences (e.g., 5555h/AAh → 2AAAh/55h → 5555h/80h) using only CE/OE/WE - eliminates need for custom programming hardware. |
| Low Power Operation | 25 mA active current and 50 µA CMOS standby current - suitable for battery-powered or thermally constrained industrial nodes. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing immutable bootloader and field-upgradable application firmware in programmable logic controllers operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Nonvolatile code storage with boot block lockout ensuring safe firmware update execution and rollback capability. Use Value: Prevents corruption of critical startup code during brown-out conditions or interrupted updates, verified by 10,000-cycle endurance. |
Use Scenario: Holding certified bootloader and calibration data in portable diagnostic equipment requiring regulatory-compliant data integrity. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory with hardware write protection and deterministic 120 ns read latency for real-time sensor initialization. Use Value: Enables FDA-aligned firmware validation via boot lockout and DATA polling confirmation of write completion. |
| Automotive Body Control Module | Telecom Remote Node Configuration |
Use Scenario: Storing vehicle-specific configuration tables and CAN gateway firmware in body control units exposed to automotive temperature cycling. IC Role / Device Role / Timing Role: In-system reprogrammable Flash with RESET-driven 12V override for factory reflash of locked boot sectors. Use Value: Supports OEM-level firmware recovery without disassembly, leveraging TSOP package's thermal performance in under-hood environments. |
Use Scenario: Retaining network stack parameters and encryption keys in remote base station controllers deployed in unattended outdoor cabinets. IC Role / Device Role / Timing Role: Low-power (50 µA standby) nonvolatile memory with sector-erase granularity for over-the-air configuration updates. Use Value: Reduces maintenance visits by enabling selective parameter block updates without erasing operational firmware. |
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, 70 ns access, 2 Mbit, same 32-pin TSOP but lacks RESET-based boot override and has no dedicated boot block lockout command. | Supports basic firmware storage but requires external logic for boot protection; not suitable for safety-critical bootloader retention. | Select when cost sensitivity outweighs need for hardware-enforced boot integrity. |
| MX29LV002CTTI-12 | 3.0–3.6V, 120 ns access, 2 Mbit, 32-pin TSOP, includes boot block (16K) but uses different command set (AAh/55h/80h vs. Atmel's 5555h/2AAAh sequence) and no 12V RESET override. | Compatible for read/write functions but requires firmware adaptation for erase/lock commands; boot lock status detection differs. | Select for drop-in replacement where existing driver support exists for Macronix command protocol. |
Compared with SST39VF020-70-4C-NHE and MX29LV002CTTI-12, the AT49LV002-12TI uniquely combines deterministic 12V RESET-based boot reflash, standardized Atmel command compatibility, and explicit DATA polling/Toggle Bit feedback - making it preferred for systems requiring field-recoverable, auditable firmware updates.
Availability
AT49LV002-12TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader memory, and automotive body control module applications requiring stable component supply and long-term lifecycle support.
Supply support for AT49LV002-12TI 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 with full technical documentation and long-term manufacturing commitment.
The AT49LV002-12TI belongs to Atmel's Battery-Voltage™ Flash family, designed specifically for reliable in-system reprogramming in 3.3V embedded systems where boot code security and field update resilience are critical.
FAQ
What is the memory organization of the AT49LV002-12TI?
The AT49LV002-12TI contains 2 Mbit (256K × 8) of Flash memory, organized as 262,144 words by 8 bits. Its physical address space spans 00000H to 3FFFFH, with the boot block located at 3C000H–3FFFFH, two 8K parameter blocks, and two main memory blocks (96K and 128K bytes). This layout enables modular firmware partitioning and selective sector erasure in the AT49LV002-12TI.
Does the AT49LV002-12TI require a high-voltage supply for programming?
No, the AT49LV002-12TI does not require an external high-voltage supply for programming or erasing. It uses an internal charge pump powered solely by the 3.0–3.6V VCC rail. All command sequences - including byte programming, sector erase, and boot lock enable - operate at standard logic levels, eliminating the need for HV generators in the AT49LV002-12TI system design.
How is boot block protection implemented in the AT49LV002-12TI?
The AT49LV002-12TI implements boot block protection via a six-cycle command sequence (5555h/AAh → 2AAAh/55h → 5555h/80h → 5555h/AAh → 2AAAh/55h → 5555h/40h) that permanently disables programming and erasure of the 16K-byte boot block (3C000H–3FFFFH). Once enabled, the lockout persists until a 12V signal is applied to the RESET pin during a subsequent operation - a feature unique to the AT49LV002-12TI among its variants.
What methods does the AT49LV002-12TI provide to detect end-of-program completion?
The AT49LV002-12TI offers two hardware-confirmed 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/erase and stabilizes upon completion). Both methods eliminate reliance on fixed timing delays and are fully supported in the AT49LV002-12TI's AC characteristics table.
Is the AT49LV002-12TI pin-compatible with other 32-pin Flash memories?
Yes, the AT49LV002-12TI uses a standard 32-pin TSOP (Type 1) footprint matching JEDEC MO-153, making it mechanically and electrically pin-compatible with other 32-pin 2 Mbit Flash devices such as the SST39VF020 and MX29LV002C. However, command sequences, boot block addressing (3C000H–3FFFFH), and RESET-based override functionality are specific to the AT49LV002-12TI and require firmware validation.
AT49LV002-12TI 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:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT49LV002-12TI FAQ
1.How can I place an order for AT49LV002-12TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV002-12TI 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 AT49LV002-12TI reliable?
The price and inventory of AT49LV002-12TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV002-12TI is usually 5 days.
3.What payment methods are accepted for AT49LV002-12TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV002-12TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV002-12TI?
AT49LV002-12TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV002-12TI 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 AT49LV002-12TI?
For technical support, including AT49LV002-12TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV002-12TI requirements.
6.How does Aetrix verify that AT49LV002-12TI is sourced from the original manufacturer or authorized distributors?
All AT49LV002-12TI 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 AT49LV002-12TI meets industry standards.
7.What is the process for return or replacement of AT49LV002-12TI?
All AT49LV002-12TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV002-12TI, 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 AT49LV002-12TI part is unused and in its original packaging.
Return procedure for AT49LV002-12TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49LV002-12TI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
