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Microchip Technology AT49LV002N-12PC
- Part No.:
- AT49LV002N-12PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT49LV002N-12PC.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,177
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Product details
Overview
AT49LV002N-12PC 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 features 70 ns read access time, 10-second chip erase, byte-programmable architecture with sector protection, and hardware data protection - enabling reliable firmware boot code retention in industrial control and telecom edge devices.
For engineers reviewing the AT49LV002N-12PC datasheet, AT49LV002N-12PC pinout, AT49LV002N-12PC application, or AT49LV002N-12PC equivalent, key selection considerations include its PLCC-32 package, 120 ns access timing grade, boot block lockout capability, DATA polling/Toggle Bit status detection, and compatibility with standard 5V-tolerant command sequences despite 3.3V-only operation.
Technical Context
This device implements a CMOS-based Flash memory architecture with dedicated 16 KB boot block (00000H–03FFFH), two 8 KB parameter blocks, and two main memory blocks (96 KB + 128 KB). It uses standard EPROM-like CE/OE/WE control logic and supports software command sequences for erase, program, and product identification without requiring high-voltage programming pins.
Internal timing control eliminates external clocks during erase and program cycles. The RESET pin is DC-connected (not functional for reset or boot override), distinguishing it from T-suffix variants. Hardware protection includes VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line gating (OE low, CE high, or WE high disables writes).
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. |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard 3.3 V logic rails; no 5 V or high-voltage programming required. |
| Read Access Time | 120 ns (max) - meets timing requirements for 8-bit microcontrollers running at ≤8 MHz with wait-state-free execution. |
| Erase Cycle Time | 10 seconds (typical) - enables field firmware updates with predictable downtime; chip or sector erasure supported. |
| Byte Programming Time | 30 µs (typical) - allows fine-grained patching of configuration or calibration data without full reflash. |
| End-of-Operation Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - eliminates need for fixed delay timers in host firmware. |
| Write Endurance | 10,000 program/erase cycles - validated for long-term use in industrial logging and parameter storage applications. |
Pinout & Package
AT49LV002N-12PC uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package with J-bend leads, pin-compatible with industry-standard 32P6 DIP and 32T TSOP footprints. Pin 1 is NC (Not Connected); RESET is DC-connected and inactive.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A0–A17 map directly to memory location bits. |
| I/O0–I/O7 | Data Input/Output | Bi-directional 8-bit data bus; supports byte-wide reads/writes and status polling via I/O6/I/O7. |
| 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 to prevent contention on shared memory buses. |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming. |
| RESET | DC Terminal | NC (Not Connected) pin per datasheet - no reset functionality; must be left unconnected or tied to VCC/GND per layout guidelines. |
| VCC | Power Supply | 3.0–3.6 V supply input; decoupling capacitor (0.1 µF) required within 10 mm of pin for stable operation. |
| GND | Ground Reference | Signal and power ground reference; requires low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Lockout | 16 KB protected region (00000H–03FFFH) prevents accidental overwrite of bootloader code once enabled via 6-byte command sequence. |
| Sector Erase Flexibility | Independent erasure of two 8 KB parameter blocks and two main memory blocks (96 KB/128 KB) enables modular firmware updates. |
| Hardware Data Protection | VCC sense, noise filtering, and control-line gating eliminate unintended writes due to power transients or signal glitches. |
| Low Power Operation | 25 mA active current and 50 µA CMOS standby current support battery-backed or energy-sensitive embedded designs. |
| Standard Command Interface | 5V-tolerant command sequences (e.g., 5555H/2AAAH) enable reuse of legacy EPROM programmers and MCU drivers. |
Applications
| Industrial PLC Firmware Storage | Telecom Edge Device Bootloader |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage IC providing fast 120 ns read access for deterministic boot and real-time task loading. Use Value: Boot block lockout ensures critical startup routines remain intact across thousands of field firmware updates. |
Use Scenario: Hosting secure boot code and protocol stack binaries in remote DSLAM or ONU units deployed in outdoor cabinets. IC Role / Device Role / Timing Role: In-system reprogrammable Flash memory enabling zero-touch firmware upgrades over management interfaces. Use Value: Sector erase capability allows independent update of application vs. security modules without full device reflash. |
| Medical Diagnostic Instrument Calibration | Automotive Body Control Module EEPROM Replacement |
Use Scenario: Retaining calibrated sensor offsets and linearization tables in portable ultrasound or ECG analyzers requiring long-term data integrity. IC Role / Device Role / Timing Role: Parameter storage device with 10,000-cycle endurance and hardware write protection against power-loss corruption. Use Value: DATA polling eliminates need for timeout-based programming confirmation, improving calibration throughput. |
Use Scenario: Replacing parallel EEPROM in legacy BCM designs where space and cost constraints favor PLCC-packaged Flash. IC Role / Device Role / Timing Role: Drop-in nonvolatile memory with identical 32-pin PLCC footprint and EPROM-compatible timing interface. Use Value: 3.3 V-only operation reduces BOM count by eliminating level shifters required for 5 V EEPROMs. |
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, 3.0–3.6 V, PLCC-32; lacks boot block lockout but offers faster 10 µs byte program time. | No hardware-protected boot sector - requires software-managed write protection for bootloader safety. | Select when maximum programming speed outweighs need for hardware-enforced boot code immutability. |
| MX29LV020TC-12 | 2 Mbit, 120 ns access, 3.0–3.6 V, PLCC-32; includes boot block protection but uses different command set (no 5555H/2AAAH compatibility). | Requires firmware driver rewrite; not pin- or command-compatible with AT49LV002N-12PC. | Select only for new designs where Microchip's ecosystem independence is not required. |
Compared with SST39VF020-120-4C-NHE and MX29LV020TC-12, the AT49LV002N-12PC uniquely combines hardware boot lockout, 5V-command compatibility, and PLCC-32 packaging - making it optimal for legacy EPROM-to-Flash migration in industrial control systems.
Availability
AT49LV002N-12PC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, telecom edge device bootloaders, and medical diagnostic instrument calibration requiring stable component supply across extended product lifecycles.
Supply support for AT49LV002N-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
Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel Flash products including the AT49LV series. The company specializes in microcontrollers, analog, and memory solutions for industrial, automotive, and communications markets.
The AT49LV002N-12PC belongs to Atmel's Battery-Voltage™ Flash family, designed specifically for reliable in-system reprogramming in 3.3 V embedded systems where firmware integrity, low power, and long-term data retention are critical.
FAQ
What is the function of the RESET pin on the AT49LV002N-12PC?
The RESET pin on the AT49LV002N-12PC is a DC-connected (don't connect) terminal with no functional reset capability. Unlike T-suffix variants, this N-suffix part does not support reset-driven operations or boot block override. Per datasheet Rev. 0982D, pin 1 in PLCC and DIP packages - and pin 9 in TSOP - must remain unconnected to ensure proper operation of the AT49LV002N-12PC.
Does the AT49LV002N-12PC support 5 V tolerant inputs?
Yes, the AT49LV002N-12PC supports 5 V tolerant inputs on all control lines (CE, OE, WE, A0–A17, I/O0–I/O7) and accepts standard 5 V EPROM-style command sequences (e.g., 5555H/2AAAH) while operating from a 3.0–3.6 V VCC supply. This enables direct replacement of 5 V EPROMs without level-shifting circuitry in the AT49LV002N-12PC design.
How is boot block protection enabled on the AT49LV002N-12PC?
Boot block protection on the AT49LV002N-12PC is enabled by executing a precise six-cycle command sequence: load AAH to 5555H, 55H to 2AAAH, 80H to 5555H, AAH to 5555H, 55H to 2AAAH, then 40H to 5555H. Once activated, the 16 KB boot block (00000H–03FFFH) becomes permanently write-protected under normal 3.3 V operation - a feature confirmed in the AT49LV002N-12PC datasheet Section 4.
What package type does the AT49LV002N-12PC use?
The AT49LV002N-12PC uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package, designated as package code "32J" in Atmel's ordering matrix. It measures 11.43 mm × 13.97 mm with J-bend leads, and is pin-compatible with 32P6 (PDIP), 32T (TSOP), and 32V (VSOP) variants of the same device family.
Can the AT49LV002N-12PC be erased sector-by-sector?
Yes, the AT49LV002N-12PC supports sector-level erasure of its two 8 KB parameter blocks and two main memory blocks (96 KB and 128 KB). Each sector is erased using a six-bus-cycle command with a specific sector address (e.g., 04000H–05FFFH for Parameter Block 1), enabling targeted firmware updates without affecting the entire AT49LV002N-12PC memory array.
AT49LV002N-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
AT49LV002N-12PC FAQ
1.How can I place an order for AT49LV002N-12PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV002N-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 AT49LV002N-12PC reliable?
The price and inventory of AT49LV002N-12PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV002N-12PC is usually 5 days.
3.What payment methods are accepted for AT49LV002N-12PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV002N-12PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV002N-12PC?
AT49LV002N-12PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV002N-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 AT49LV002N-12PC?
For technical support, including AT49LV002N-12PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV002N-12PC requirements.
6.How does Aetrix verify that AT49LV002N-12PC is sourced from the original manufacturer or authorized distributors?
All AT49LV002N-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 AT49LV002N-12PC meets industry standards.
7.What is the process for return or replacement of AT49LV002N-12PC?
All AT49LV002N-12PC units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV002N-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 AT49LV002N-12PC part is unused and in its original packaging.
Return procedure for AT49LV002N-12PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49LV002N-12PC Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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