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Microchip Technology AT49LV002-12PC
- Part No.:
- AT49LV002-12PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT49LV002-12PC.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,017
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Product details
Overview
AT49LV002-12PC 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 70 ns read access time, supports byte-by-byte programming (30 µs/byte typical), features sector-based erase architecture with 16K-byte boot block and hardware data protection, and is commonly deployed in firmware update-capable industrial controllers and legacy BIOS modules.
For engineers reviewing the AT49LV002-12PC datasheet, AT49LV002-12PC pinout, AT49LV002-12PC application, or AT49LV002-12PC equivalent, key selection criteria include its 3.0–3.6V VCC range, 120 ns maximum access time, PLCC-32 package compatibility, boot-block lockout capability, and support for DATA polling and toggle-bit program/erase verification.
Technical Context
The AT49LV002-12PC implements a standard parallel Flash interface with CE/OE/WE control logic and operates in read, byte-program, sector-erase, and chip-erase modes via six-cycle command sequences. Its internal program controller manages timing without external clocks, and RESET pin functionality enables boot-block reprogramming override at 12 V.
Memory organization includes one 16K-byte boot block (00000H–03FFFH), two 8K-byte parameter blocks, and two main memory blocks (96K + 128K bytes). The device uses CMOS standby current <50 µA and active current ≤25 mA, with hardware protections including VCC sense, noise filtering on WE/CE, and program inhibit logic.
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 - compatible with 3.3V system rails; no 5V required |
| Read Access Time | 120 ns max - defines minimum bus cycle duration for reliable read operations |
| Byte Programming Time | 30 µs typical - determines firmware update latency per byte in field upgrades |
| Erase Cycle Time | 10 seconds max - sets worst-case delay for sector or full-chip erasure |
| End-of-Operation Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - enables software-driven timing control without fixed delays |
| Write Endurance | 10,000 program/erase cycles - specifies lifetime under repeated firmware revision loads |
Pinout & Package
AT49LV002-12PC is packaged in a 32-lead Plastic Dual In-line Package (PDIP), 0.600" wide (32P6), with through-hole mounting and industry-standard pin spacing.
| 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 | Data Inputs/Outputs | 8-bit bidirectional data bus for read, program, and identification operations |
| 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 during read to prevent contention |
| WE | Write Enable | Active-low write strobe; latches address/data during programming and erase command sequences |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-impedance outputs; 12V input enables boot-block override |
| VCC | Power Supply | +3.0V to +3.6V supply; powers core logic and I/O buffers |
| GND | Ground | Reference return path for all signals and power |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Architecture | Independent erasure of 16K-byte boot block, two 8K-byte parameter blocks, and two main memory blocks (96K/128K) enables selective firmware updates without full chip erase |
| Boot Block Programming Lockout | Hardware-enforced write protection for 16K-byte boot sector (00000H–03FFFH); prevents accidental corruption of bootloader code during field updates |
| Hardware Data Protection | VCC sense (<1.8V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line inhibit (OE low/CE high/WE high blocks writes) reduce unintended writes |
| DATA Polling & Toggle Bit | Real-time software detection of program/erase completion via I/O7 complement or I/O6 toggling - eliminates need for fixed timeout delays |
| Single 3.3V Operation | No 5V or 12V programming voltage required; simplifies power design and eliminates level-shifting circuitry in 3.3V-only systems |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Modules |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments with temperature cycling. IC Role / Device Role / Timing Role: Nonvolatile code storage with in-system reprogrammability; 120 ns access supports real-time scan cycle execution. Use Value: Boot block lockout ensures bootloader integrity across thousands of field updates; 10,000-cycle endurance matches typical PLC service life. | Use Scenario: Holding BIOS initialization code and configuration data in desktop motherboards requiring field-upgradable firmware prior to UEFI transition. IC Role / Device Role / Timing Role: Parallel-interface Flash memory mapped into CPU address space; CE/OE/WE timing aligns with ISA/LPC bus protocols. Use Value: Sector erase allows patching of specific BIOS modules without erasing boot code; DATA polling enables deterministic update sequencing in DOS-based flash utilities. |
| Embedded Telematics Control Units | Medical Device Configuration Memory |
Use Scenario: Storing GPS firmware, CAN protocol stacks, and calibration tables in automotive telematics modules subject to vibration and thermal stress. IC Role / Device Role / Timing Role: Code and parameter storage with robust erase/write control; RESET pin override supports recovery from corrupted boot sectors. Use Value: Parameter blocks (8K × 2) store vehicle-specific calibration data separately from application code; 50 µA standby current extends battery-backed operation. | Use Scenario: Retaining device-specific calibration coefficients, safety-critical boot parameters, and regulatory compliance logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure nonvolatile memory with hardware write protection; boot block lockout prevents unauthorized modification of FDA-mandated startup routines. Use Value: 3.0–3.6V operation ensures compatibility with medical-grade 3.3V power supplies; 10-second erase time enables rapid recalibration during service intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT49BV002-12PC | 2.7–3.6V VCC range; includes BV-series lower-voltage tolerance | Broader supply margin supports battery-powered or brown-out-prone systems | Select when system VCC may dip below 3.0V; otherwise AT49LV002-12PC suffices |
| AM29LV002BT-120EC | Same density, 120 ns access, but uses AMD-compatible command set and requires different unlock sequences | Not drop-in; requires firmware adaptation for command execution and status polling | Choose only if migrating from existing AMD-based designs or requiring second-source availability |
Compared with AT49BV002-12PC and AM29LV002BT-120EC, the AT49LV002-12PC offers tighter 3.0–3.6V regulation, identical timing, and Atmel-specific command compatibility-making it optimal for new 3.3V designs where supply stability is assured and firmware reuse is prioritized.
Availability
AT49LV002-12PC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy BIOS modules, embedded telematics control units, and medical device configuration memory requiring stable component supply over extended production lifecycles.
Supply support for AT49LV002-12PC 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.
The AT49LV002-12PC belongs to Atmel's legacy parallel Flash memory product line, designed specifically for embedded systems requiring in-system reprogrammability, sector-level erase granularity, and hardware-based data protection in 3.3V environments.
FAQ
What is the maximum operating temperature range for the AT49LV002-12PC?
The AT49LV002-12PC is rated for commercial operation from 0°C to +70°C. Its datasheet confirms this range in the ordering information table for the -12PC suffix, which corresponds to the PDIP package with 120 ns access time and commercial temperature grade. Industrial-grade variants (e.g., AT49LV002-12PI) extend to –40°C to +85°C, but the -12PC variant does not support that range.
Does the AT49LV002-12PC support boot block lockout, and how is it enabled?
Yes, the AT49LV002-12PC supports boot block lockout for its 16K-byte boot sector (00000H–03FFFH). It is enabled by executing a six-cycle command sequence: load AAH to 5555H, 55H to 2AAAH, 80H to 5555H, then AAH/55H/40H to 5555H/2AAAH/5555H. Once activated, programming and erasure of the boot block are inhibited at ≤5.5V, preserving bootloader integrity in the AT49LV002-12PC.
Can the AT49LV002-12PC be programmed using standard 3.3V logic levels only?
Yes, the AT49LV002-12PC requires only 3.0–3.6V VCC and standard TTL/CMOS logic levels (VIH ≥ 2.0V, VIL ≤ 0.6V) for all control inputs (CE, OE, WE, RESET). No high-voltage programming pulses or external 12V sources are needed for normal operation - though 12V applied to RESET enables boot-block override during recovery, which is optional and not required for routine programming of the AT49LV002-12PC.
What package type is used by the AT49LV002-12PC, and what are its mechanical dimensions?
The AT49LV002-12PC uses a 32-lead Plastic Dual In-line Package (PDIP), 0.600" wide (package code 32P6). Its body width is 15.24 mm (0.600"), lead count is 32, and it follows standard through-hole DIP footprint spacing (0.100" between rows, 0.300" row-to-row). This package is compatible with legacy socketed designs and wave-solder assembly processes used in the AT49LV002-12PC's target applications.
How does DATA polling work on the AT49LV002-12PC during byte programming?
During byte programming, reading the programmed address returns the complement of the loaded data on I/O7 until completion. Once the AT49LV002-12PC finishes programming, true data appears on I/O7 and all other outputs. This allows host firmware to poll I/O7 in a loop without fixed delays - a critical feature for deterministic update timing in resource-constrained systems using the AT49LV002-12PC.
AT49LV002-12PC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-PDIP
AT49LV002-12PC FAQ
1.How can I place an order for AT49LV002-12PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV002-12PC 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 AT49LV002-12PC reliable?
The price and inventory of AT49LV002-12PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV002-12PC is usually 5 days.
3.What payment methods are accepted for AT49LV002-12PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV002-12PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV002-12PC?
AT49LV002-12PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV002-12PC 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 AT49LV002-12PC?
For technical support, including AT49LV002-12PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV002-12PC requirements.
6.How does Aetrix verify that AT49LV002-12PC is sourced from the original manufacturer or authorized distributors?
All AT49LV002-12PC 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 AT49LV002-12PC meets industry standards.
7.What is the process for return or replacement of AT49LV002-12PC?
All AT49LV002-12PC units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV002-12PC, 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 AT49LV002-12PC part is unused and in its original packaging.
Return procedure for AT49LV002-12PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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