My Inquiry
My Account
Microchip Technology AT49LV002T-12PI
- Part No.:
- AT49LV002T-12PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT49LV002T-12PI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,699
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49LV002T-12PI 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 architecture with sector protection, and operates across industrial temperature range (−40°C to +85°C) in 32-pin PDIP package.
For engineers reviewing the AT49LV002T-12PI datasheet, AT49LV002T-12PI pinout, AT49LV002T-12PI application, or AT49LV002T-12PI equivalent, key selection considerations include boot block lockout behavior (3C000H–3FFFFH), DC/AC timing compliance at 120 ns, industrial-grade VCC standby current (50 µA), and compatibility with standard 5V-command protocol for programming without high-voltage circuitry.
Technical Context
The AT49LV002T-12PI implements a command-based software-controlled Flash architecture with six-byte instruction sequences for chip/sector erase and byte programming. Its memory map allocates a 16K-byte boot block at address 3C000H–3FFFFH, two 8K-byte parameter blocks, and two main memory blocks (96K and 128K bytes), enabling secure firmware storage and field-upgradable configuration data.
Hardware data protection includes VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line interlock (OE low, CE high, or WE high disables write). End-of-program detection is supported via DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling), both usable during active cycles without external timing constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits - supports full firmware image storage for 8-bit MCUs. |
| Read Access Time | 120 ns max - meets timing requirements for 8 MHz bus interfaces without wait states. |
| Supply Voltage | 3.0 V to 3.6 V - compatible with regulated 3.3 V system rails; no external voltage translators needed. |
| Erase Time | 10 seconds typical for full chip erase - enables rapid field updates without extended downtime. |
| Programming Time | 30 µs/byte typical - allows efficient patching of small code/data segments in real time. |
| Endurance | 10,000 program/erase cycles - sufficient for firmware update cycles over 5+ year product lifetimes. |
| Standby Current | 50 µA CMOS - enables ultra-low-power retention in battery-backed or energy-harvesting systems. |
Pinout & Package
AT49LV002T-12PI is supplied in a 32-lead, 0.600" wide plastic dual in-line package (PDIP), pin-compatible with industry-standard 32-pin Flash memory footprints. Thermal and mechanical characteristics align with JEDEC MS-001.
| 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. |
| I/O0–I/O7 | Data Input/Output | Bi-directional 8-bit data bus; supports true read-modify-write operations and data polling on I/O7/I/O6. |
| CE | Chip Enable | Active-low chip select; enables device decoding in multi-chip memory maps; must be low with OE low and WE high for read. |
| OE | Output Enable | Active-low output control; places I/O pins in high-impedance state when high to prevent bus contention. |
| WE | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per command cycle timing. |
| RESET | Reset Input | Active-low hardware reset; halts ongoing operations and forces high-Z outputs; 12 V override enables boot block reprogramming. |
| VCC | Power Supply | +3.0 V to +3.6 V supply; powers core logic and charge pumps; decoupling required per datasheet layout guidelines. |
| GND | Ground | Reference return path for all signals and power; requires low-inductance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16K-byte protected region (3C000H–3FFFFH) prevents accidental overwrite of bootloader code; enabled via 6-cycle command sequence. |
| Software Command Architecture | No external high-voltage programming required; uses standard 5V-command protocol (e.g., 5555H/AAH, 2AAAH/55H) for erase/program operations. |
| Data Polling & Toggle Bit | Real-time end-of-program detection via I/O7 complement or I/O6 toggling - eliminates need for fixed delay timers in host firmware. |
| Sector Erase Flexibility | Independent erasure of two 8K-byte parameter blocks and two main memory blocks (96K/128K) - enables selective firmware module updates. |
| Hardware Data Protection | VCC sense, noise filtering, and control-line interlock prevent spurious writes during power transients or EMI events. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing field-upgradable ladder logic and I/O configuration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with 120 ns read access and 10,000-cycle endurance; boot block protects startup firmware from corruption during remote updates. Use Value: Enables secure over-the-air firmware patches without physical access, reducing maintenance downtime and service costs. | Use Scenario: Holding certified bootloader and safety-critical initialization routines in portable diagnostic equipment requiring regulatory-compliant firmware integrity. IC Role / Device Role / Timing Role: Secure boot memory with hardware lockout (3C000H–3FFFFH) and 50 µA standby current for battery-operated devices. Use Value: Prevents unauthorized modification of boot code while supporting periodic calibration data updates in parameter blocks. |
| Automotive Body Control Module | Telecom Remote Node Configuration |
Use Scenario: Storing vehicle-specific configuration parameters (e.g., door lock logic, lighting profiles) in body control units operating across −40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-temperature Flash memory with 3.0–3.6 V operation and 10-second erase - compatible with automotive 3.3 V power domains. Use Value: Allows dealership-level personalization and recall updates without replacing the entire ECU module. | Use Scenario: Hosting firmware images and network stack configuration data in outdoor telecom repeaters subject to thermal cycling and limited maintenance windows. IC Role / Device Role / Timing Role: In-system reprogrammable Flash with sector erase capability - enables selective update of protocol stacks without erasing baseband firmware. Use Value: Reduces field upgrade time by >70% compared to full-chip erase methods, minimizing 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 |
|---|---|---|---|
| AT49BV002T-12PI | 2.7–3.6 V supply range; includes Battery-Voltage™ operation down to 2.7 V. | Better suited for battery-powered systems with brown-out conditions; higher active current (25 mA vs. 25 mA) but same standby. | Select when system VCC may dip below 3.0 V during operation or battery discharge. |
| SST39VF020-120-4C-NHE | 3.0–3.6 V only; 120 ns access; 2 Mbit density; 512-byte sector erase granularity. | Finer erase resolution enables smaller incremental updates; lacks RESET-based boot block override. | Prefer for applications requiring frequent small-block updates where boot block override is unnecessary. |
Compared with AT49BV002T-12PI and SST39VF020-120-4C-NHE, the AT49LV002T-12PI offers tighter VCC tolerance (3.0–3.6 V only), guaranteed industrial temperature operation, and unique 12 V RESET override for boot block reprogramming - making it optimal for safety-critical embedded systems requiring deterministic firmware recovery paths.
Availability
AT49LV002T-12PI 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, long-term lifecycle support, and traceable sourcing.
Supply support for AT49LV002T-12PI 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 continues to manufacture and support legacy Atmel Flash memory products including the AT49LV series.
The AT49LV002T-12PI belongs to Atmel's legacy parallel-interface Flash memory product line, designed specifically for cost-sensitive, in-system reprogrammable code storage in 8-bit and 16-bit microcontroller platforms.
FAQ
What is the boot block address range for AT49LV002T-12PI?
The boot block for AT49LV002T-12PI occupies addresses 3C000H to 3FFFFH (16K bytes). This differs from non-T variants (e.g., AT49LV002N), which locate the boot block at 00000H–03FFFH. The T-suffix denotes top-boot architecture, placing protected firmware at the highest memory address for natural alignment with MCU vector tables.
Does AT49LV002T-12PI support 12 V programming voltage?
No, AT49LV002T-12PI operates exclusively from a 3.0–3.6 V supply and does not require or accept 12 V for programming. However, applying 12.0 V ± 0.5 V to the RESET pin during erase/program operations overrides the boot block lockout feature - this is a dedicated hardware recovery mechanism, not a programming voltage.
Can AT49LV002T-12PI be used in place of AT49LV002-12PI?
No, AT49LV002T-12PI is not a drop-in replacement for AT49LV002-12PI. The "T" suffix indicates top-boot architecture (boot block at 3C000H–3FFFFH), whereas the non-T version uses bottom-boot (00000H–03FFFH). Software that assumes bottom-boot addressing will fail unless memory map and bootloader code are revised.
What is the maximum erase time for AT49LV002T-12PI?
The maximum erase time for AT49LV002T-12PI is 10 seconds for full chip erase. Sector erase times are not specified individually in the datasheet but are internally controlled and typically faster. The device automatically manages erase timing - no external clocks or polling delays are required beyond the 10-second worst-case window.
How does DATA polling work on AT49LV002T-12PI?
During byte programming, reading the last programmed address returns the complement of the loaded data on I/O7 until completion. Once programming finishes, true data appears on all I/O lines. This allows host firmware to poll I/O7 without fixed delays - the transition from complement to true value signals readiness for the next operation.
AT49LV002T-12PI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-DIP (0.600", 15.24mm)
- 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:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-PDIP
AT49LV002T-12PI FAQ
1.How can I place an order for AT49LV002T-12PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV002T-12PI 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 AT49LV002T-12PI reliable?
The price and inventory of AT49LV002T-12PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV002T-12PI is usually 5 days.
3.What payment methods are accepted for AT49LV002T-12PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV002T-12PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV002T-12PI?
AT49LV002T-12PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV002T-12PI 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 AT49LV002T-12PI?
For technical support, including AT49LV002T-12PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV002T-12PI requirements.
6.How does Aetrix verify that AT49LV002T-12PI is sourced from the original manufacturer or authorized distributors?
All AT49LV002T-12PI 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 AT49LV002T-12PI meets industry standards.
7.What is the process for return or replacement of AT49LV002T-12PI?
All AT49LV002T-12PI units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV002T-12PI, 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 AT49LV002T-12PI part is unused and in its original packaging.
Return procedure for AT49LV002T-12PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49LV002T-12PI 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…
