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Microchip Technology AT49LV001NT-12JI
- Part No.:
- AT49LV001NT-12JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49LV001NT-12JI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,378
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Product details
Overview
AT49LV001NT-12JI from Microchip Technology (formerly Atmel) is a 1 Mbit (128K × 8) single-supply 3.0–3.6 V in-system reprogrammable Flash memory IC used for nonvolatile code/data storage in embedded microcontroller systems. It delivers 120 ns read access time, 10-second chip erase, byte-programming at 30 µs/byte typical, and features hardware data protection, DATA polling, and a 16-Kbyte boot block with programmable lockout.
For engineers reviewing the AT49LV001NT-12JI datasheet, AT49LV001NT-12JI pinout, AT49LV001NT-12JI application, or AT49LV001NT-12JI equivalent, this page provides verified technical context, sector architecture details, boot-block protection behavior, industrial temperature operation (−40°C to +85°C), and real-world use cases in firmware update-capable embedded controllers.
Technical Context
The AT49LV001NT-12JI implements a sector-organized Flash architecture comprising one 16-Kbyte boot block (address range 1C000H–1FFFFH), two 8-Kbyte parameter blocks, and two main memory blocks (32K and 64K bytes). Its command interface uses standard CE/OE/WE control lines with no high-voltage programming required - all operations executed via six-byte software command sequences.
It supports three key operational modes: Read (CE/OE low, WE high), Byte Programming (CE low, OE high, WE low), and Chip/Sector Erase (multi-cycle command sequence with address/data latching on falling/rising edges of CE or WE). The RESET pin enables system-level reset and - when driven to 12 V - overrides boot block lockout during erase/program cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8 bits) - sufficient for bootloader, configuration tables, and firmware patches in 8-bit/16-bit MCU systems. |
| Supply Voltage | 3.0 V to 3.6 V - compatible with 3.3 V logic rails and battery-backed industrial designs without level-shifting. |
| Read Access Time | 120 ns - meets timing requirements for wait-state-free execution from Flash on MCUs with ≤8.3 MHz bus clocks. |
| Erase Cycle Time | 10 seconds (typical) - enables field firmware updates with predictable downtime; chip erase excludes boot block if lockout is enabled. |
| Byte Programming Time | 30 µs typical - allows rapid patching of individual configuration registers or calibration constants without full-sector rewrite. |
| End-of-Program Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - eliminates need for fixed delay timers in host firmware. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded applications including motor control and remote sensing. |
Pinout & Package
AT49LV001NT-12JI is packaged in a 32-lead PLCC (Plastic Leaded Chip Carrier), pin-compatible with industry-standard 32-pin Flash memory footprints. The package supports surface-mount assembly and offers robust thermal performance for sustained write cycles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A16 selects upper/lower 64K region. |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface for read/write transfers; high-impedance when CE or OE is inactive. |
| CE | Chip Enable | Active-low chip select; must be low for valid read/write cycles; enables bus contention avoidance in multi-device systems. |
| OE | Output Enable | Active-low output gate; controls data bus drive only - does not affect internal state or erase/program sequencing. |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming. |
| RESET | Reset Input | Active-low system reset; halts ongoing operations and forces high-Z outputs; 12 V override enables boot block reprogramming. |
| VCC / GND | Power Supply | Single 3.3 V supply with CMOS standby current <50 µA - critical for low-power sleep-mode retention. |
| DC / NC | No Connect / Don't Connect | Pins 1 (PLCC) and 9 (TSOP) are unconnected; must remain floating per datasheet - no pull-up/down or routing. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16-Kbyte protected region (1C000H–1FFFFH) prevents accidental overwrite of bootloader code; lockout activated via 6-byte command sequence. |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line interlock (OE low/CE high/WE high blocks writes). |
| Sector-Erasable Architecture | Independent erasure of two 8-Kbyte parameter blocks and two main memory blocks (32K/64K) enables modular firmware updates without full chip erase. |
| 10,000 Program/Erase Cycles | Guaranteed endurance for field-upgradable systems requiring frequent calibration or configuration changes over product lifetime. |
| Software Product Identification | Manufacturer code 1FH and device code 04H readable via 3-cycle software entry - enables automatic algorithm selection in universal programmers. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing firmware images and safety-critical boot code in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with boot block lockout ensuring bootloader integrity across power cycles and field updates. Use Value: Prevents corruption of startup routines during partial firmware upgrades; 120 ns access enables deterministic boot timing within 10 ms window. |
Use Scenario: Retaining calibrated sensor offsets, user preferences, and regulatory-compliant device settings in portable diagnostic equipment. IC Role / Device Role / Timing Role: Parameter block storage with independent 8-Kbyte erasability for safe, atomic updates of calibration data without affecting application code. Use Value: Enables FDA-aligned traceable configuration changes; 30 µs/byte programming allows sub-100 ms recalibration save operations. |
| Automotive Body Control Module | Smart Energy Meter Firmware |
Use Scenario: Holding vehicle-specific configuration tables (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 interfacing directly with 8-bit automotive MCUs via standard parallel bus. Use Value: Eliminates need for external voltage translators; 3.0–3.6 V operation matches automotive 3.3 V rail tolerances under load dump conditions. |
Use Scenario: Storing tariff schedules, communication protocol stacks, and tamper logs in ANSI C12.22-compliant smart meters with 10+ year field life. IC Role / Device Role / Timing Role: High-endurance (10,000-cycle) nonvolatile memory for infrequent but mission-critical firmware patches and security certificate updates. Use Value: Reduces field replacement cost by enabling remote, cryptographically signed firmware updates without meter physical access. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF010-70-4C-NHE | 70 ns access, 3.0–3.6 V, same 1 Mbit density and PLCC-32 package; lacks RESET pin and boot block lockout override. | Supports faster read timing but no 12 V boot block unlock - unsuitable where bootloader recovery after lockout is required. | Select when maximum read speed is prioritized and boot block reprogramming is never needed post-deployment. |
| MX29LV001CTTI-12 | 120 ns access, 3.0–3.6 V, identical sector architecture and boot block size; includes hardware write protect (WP#) pin absent in AT49LV001NT-12JI. | Offers pin-level hardware write disable independent of software commands - adds layer of protection against firmware bugs. | Select when dual-layer protection (hardware WP# + software lockout) is mandated for safety-critical certification. |
Compared with SST39VF010-70-4C-NHE and MX29LV001CTTI-12, the AT49LV001NT-12JI uniquely combines industrial temperature rating, 12 V RESET-based boot block override, and Atmel's proven command-set compatibility - making it optimal for legacy MCU platforms requiring field-recoverable bootloader integrity.
Availability
AT49LV001NT-12JI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and automotive body control module applications requiring stable component supply across extended product lifecycles.
Supply support for AT49LV001NT-12JI 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 its legacy Flash memory portfolio, including process consistency, long-term documentation, and obsolescence mitigation.
The AT49LV001NT-12JI belongs to Atmel's Battery-Voltage™ Flash family, designed specifically for reliable in-system reprogramming in resource-constrained 8-bit and 16-bit embedded systems operating from single 3.3 V supplies.
FAQ
What is the boot block address range for AT49LV001NT-12JI?
The AT49LV001NT-12JI uses the "T" variant memory map, where the 16-Kbyte boot block occupies addresses 1C000H to 1FFFFH. This differs from non-T variants (e.g., AT49LV001N), which locate the boot block at 00000H–03FFFH. The T suffix explicitly denotes this relocated boot sector layout, confirmed in the datasheet's "Notes" section and sector erase address table.
Does AT49LV001NT-12JI support 12 V RESET override for boot block programming?
Yes, AT49LV001NT-12JI supports 12 V ± 0.5 V applied to the RESET pin to temporarily disable boot block lockout during chip erase, sector erase, or byte programming. This feature is explicitly documented in the "BOOT BLOCK PROGRAMMING LOCKOUT OVERRIDE" section and applies to all "T" variants, including AT49LV001NT-12JI.
What package type is used for AT49LV001NT-12JI?
AT49LV001NT-12JI is supplied in a 32-lead Plastic Leaded Chip Carrier (PLCC) package, designated as "32J" in Atmel's ordering information. This is confirmed in the "AT49LV001NT Ordering Information" table (page 19), where "-12JI" suffix maps to industrial temperature grade and PLCC packaging.
How many program/erase cycles is AT49LV001NT-12JI rated for?
AT49LV001NT-12JI is rated for a minimum of 10,000 program/erase cycles, as stated in the "Features" section and reinforced in the "Device Operation" description. This endurance specification applies across the full industrial temperature range (−40°C to +85°C) and is guaranteed per Atmel's qualification testing.
Is the RESET pin functional on AT49LV001NT-12JI?
Yes, the RESET pin is fully functional on AT49LV001NT-12JI. Unlike the "N(T)" variants (e.g., AT49BV001N(T)), the "T" suffix indicates RESET is implemented - enabling both system reset and 12 V boot block override. This is clarified in the "RESET" subsection and pin function table, where RESET is defined as an active-low input with override capability.
AT49LV001NT-12JI 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:
- 1Mbit
- Memory Organization:
- 128K 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-PLCC (13.97x11.43)
AT49LV001NT-12JI FAQ
1.How can I place an order for AT49LV001NT-12JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV001NT-12JI 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 AT49LV001NT-12JI reliable?
The price and inventory of AT49LV001NT-12JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV001NT-12JI is usually 5 days.
3.What payment methods are accepted for AT49LV001NT-12JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV001NT-12JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV001NT-12JI?
AT49LV001NT-12JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV001NT-12JI 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 AT49LV001NT-12JI?
For technical support, including AT49LV001NT-12JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV001NT-12JI requirements.
6.How does Aetrix verify that AT49LV001NT-12JI is sourced from the original manufacturer or authorized distributors?
All AT49LV001NT-12JI 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 AT49LV001NT-12JI meets industry standards.
7.What is the process for return or replacement of AT49LV001NT-12JI?
All AT49LV001NT-12JI units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV001NT-12JI, 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 AT49LV001NT-12JI part is unused and in its original packaging.
Return procedure for AT49LV001NT-12JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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