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Microchip Technology AT49LV001NT-12JC
- Part No.:
- AT49LV001NT-12JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49LV001NT-12JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT49LV001NT-12JC from Atmel is a 1 Mbit (128K × 8) single-supply 3.0–3.6 V Flash memory IC with 120 ns read access time, sector-based architecture (16 KB boot block + two 8 KB parameter blocks + two main memory blocks), and hardware data protection. It supports in-system reprogramming via standard CE/OE/WE control and is used in embedded firmware storage for industrial controllers and legacy microcontroller boot code.
For engineers reviewing the AT49LV001NT-12JC datasheet, AT49LV001NT-12JC pinout, AT49LV001NT-12JC application, or AT49LV001NT-12JC equivalent, key selection criteria include its PLCC-32 package, 120 ns access timing, boot block lockout capability, byte-programmable erase/program cycle, and compatibility with 3.3 V-only system buses.
Technical Context
The AT49LV001NT-12JC implements a sector-erasable Flash architecture with dedicated 16 KB boot block (address range 1C000H–1FFFFH), two 8 KB parameter blocks, and two main memory blocks (32 KB and 64 KB). It uses standard EPROM-like read protocol with CE/OE/WE tri-state control and supports software command sequences for chip/sector erase and byte programming.
It features DATA polling (I/O7 complement detection) and Toggle Bit (I/O6 toggling) for end-of-operation detection, internal program timers, and hardware safeguards including VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulse rejection), and write inhibit logic (OE low, CE high, or WE high blocks writes).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits |
| Read Access Time | 120 ns - determines maximum bus clock rate for reliable read cycles |
| Supply Voltage | 3.0 V to 3.6 V - compatible with 3.3 V logic systems without level shifting |
| Active Current | 25 mA - defines power budget during read or programming operations |
| Standby Current | 50 µA CMOS - enables low-power retention in battery-backed or sleep-mode applications |
| Program/Erase End Detection | DATA polling (I/O7) and Toggle Bit (I/O6) - eliminates need for fixed-timing delays in firmware |
| Endurance | 10,000 write/erase cycles - specifies field lifetime under frequent firmware updates |
Pinout & Package
AT49LV001NT-12JC is packaged in a 32-lead Plastic J-leaded Chip Carrier (PLCC), pin-compatible with industry-standard 32-pin PLCC footprint (J-lead, 1.27 mm pitch, 11.43 mm × 13.97 mm body). Pin 1 is marked by corner notch; pin 9 is NC (No Connect) per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing (00000H–1FFFFH) |
| I/O0–I/O7 | Data Inputs/Outputs | 8-bit bidirectional data bus with TTL-compatible levels and high-impedance tri-state on deselect |
| 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 assertion and enables bus contention avoidance |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and programming |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-impedance outputs; 12 V override enables boot block reprogramming |
| VCC | Power Supply | +3.0 V to +3.6 V supply; powers core logic and I/O buffers |
| GND | Ground | Reference return path for all signals and power |
| NC | No Connect | Pin 9 - must remain unconnected per design; no internal connection |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16 KB protected region (1C000H–1FFFFH) prevents accidental overwrite of critical boot code; enabled via 6-cycle command sequence |
| Sector Erase Flexibility | Independent erasure of two 8 KB parameter blocks and two main memory blocks (32 KB/64 KB), enabling modular firmware updates |
| Hardware Data Protection | VCC sense, noise filtering, and control-line inhibit logic prevent spurious writes during power transients or EMI events |
| 3.3 V-Only Command Interface | No external 12 V programming voltage required; all read/write/erase operations executed using standard 3.3 V logic levels |
| DATA Polling & Toggle Bit | Dual asynchronous operation-completion indicators eliminate fixed delay loops and improve firmware efficiency |
Applications
| Industrial PLC Firmware Storage | Legacy Microcontroller Boot Memory |
|---|---|
Use Scenario: Storing firmware and configuration data in programmable logic controllers operating in harsh industrial environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile boot and application code storage with 120 ns read access supporting real-time scan cycle execution. Use Value: Sector architecture allows independent update of parameter blocks without erasing boot code; 50 µA standby current extends uptime in battery-buffered backup scenarios. | Use Scenario: Providing boot code and BIOS-like initialization routines for 8-bit/16-bit microcontrollers in legacy instrumentation and telecom equipment. IC Role / Device Role / Timing Role: Primary boot ROM replacement with direct address/data bus interface and CE/OE/WE control matching MPU timing requirements. Use Value: Boot block lockout ensures secure, tamper-resistant startup code; 10,000-cycle endurance supports field firmware upgrades over product lifecycle. |
| Embedded System Configuration Memory | Automotive Body Control Module Storage |
Use Scenario: Holding calibration tables, device-specific settings, and user preferences in medical devices and test equipment requiring long-term data retention. IC Role / Device Role / Timing Role: Parameter block (8 KB × 2) serves as writable nonvolatile configuration store accessed during power-up initialization. Use Value: Independent sector erase enables safe field updates of calibration data without risking boot integrity or main application code. | Use Scenario: Storing lighting control logic and sensor mapping data in automotive body control units operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade Flash memory with extended temperature rating (-40°C to +85°C) and robust ESD/noise immunity. Use Value: Hardware data protection (VCC sense, noise filter) prevents corruption during vehicle load dump or ignition transients; PLCC package offers mechanical reliability in vibration-prone environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT49BV001NT-12JC | Wider VCC range (2.7–3.6 V); higher active current (25 mA typical); same PLCC-32 package and pinout | Supports battery-voltage operation down to 2.7 V; suitable for portable or wide-input-range systems | Select when system VCC may dip below 3.0 V or requires broader supply tolerance |
| SST39VF010-120-4C-NHE | 1 Mbit, 120 ns, 3.0–3.6 V; 32-pin TSOP (not PLCC); different command set and sector map | Lacks boot block lockout; uses uniform 4 KB sectors; no RESET pin override for protected regions | Choose for space-constrained PCBs where TSOP fits; verify firmware compatibility due to differing command protocol |
Compared with AT49BV001NT-12JC and SST39VF010-120-4C-NHE, the AT49LV001NT-12JC provides tighter 3.0–3.6 V regulation, guaranteed boot block protection with 12 V RESET override, and PLCC packaging suited for through-hole or socketed legacy designs-making it optimal for industrial firmware storage where voltage stability and physical robustness are prioritized.
Availability
AT49LV001NT-12JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy microcontroller boot memory, and embedded system configuration memory requiring stable component supply, long-lifecycle support, and verified PLCC-32 compatibility.
Supply support for AT49LV001NT-12JC 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 ICs for industrial, automotive, and consumer applications.
The AT49LV001NT-12JC belongs to Atmel's Battery-Voltage™ Flash memory product line, designed specifically for 3.3 V systems requiring reliable, in-system reprogrammable nonvolatile storage with sector-level flexibility and hardware write protection.
FAQ
What is the memory organization and density of the AT49LV001NT-12JC?
The AT49LV001NT-12JC contains 1 Mbit (131,072 × 8) of Flash memory, organized as 128K words × 8 bits. Its address space spans 00000H to 1FFFFH (128 KB), partitioned into one 16 KB boot block (1C000H–1FFFFH), two 8 KB parameter blocks, and two main memory blocks (32 KB and 64 KB). This structure is explicitly defined in the AT49LV001NT-12JC datasheet section "Sector Architecture" and confirmed by the block diagram and address map.
Does the AT49LV001NT-12JC support boot block protection, and how is it enabled?
Yes, the AT49LV001NT-12JC supports boot block programming lockout for its 16 KB boot sector (1C000H–1FFFFH). It is enabled via a six-bus-cycle command sequence: load AAH at 5555H, 55H at 2AAAH, 80H at 5555H, AAH at 5555H, 55H at 2AAAH, and 40H at 5555H. Once activated, the boot block cannot be erased or programmed at ≤5.5 V; only a 12 V pulse on RESET overrides this protection. This behavior is documented in the "Boot Block Programming Lockout" section of the AT49LV001NT-12JC datasheet.
What package type and pin count does the AT49LV001NT-12JC use?
The AT49LV001NT-12JC uses a 32-lead Plastic J-leaded Chip Carrier (PLCC) package, designated as 32J in Atmel's ordering information. Pin 1 is identified by the corner notch; pin 9 is NC (No Connect), as specified in the "Pin Configurations" section and confirmed in the "AT49LV001NT Ordering Information" table on page 19 of the AT49LV001NT-12JC datasheet.
How does the AT49LV001NT-12JC indicate completion of a program or erase operation?
The AT49LV001NT-12JC provides two hardware methods: DATA polling (monitoring I/O7 - it returns the complement of written data until completion, then true data) and Toggle Bit (monitoring I/O6 - it toggles between 0 and 1 during operation, then stabilizes). Both are usable at any time during the cycle and eliminate reliance on fixed timing delays. These mechanisms are detailed in the "DATA POLLING" and "TOGGLE BIT" sections of the AT49LV001NT-12JC datasheet.
What are the DC and AC operating conditions for the AT49LV001NT-12JC?
The AT49LV001NT-12JC operates over 0°C to +70°C (Commercial) or –40°C to +85°C (Industrial), with VCC = 3.0 V to 3.6 V. Its DC specs include 25 mA active current, 50 µA CMOS standby current, and input thresholds of VIL ≤ 0.6 V / VIH ≥ 2.0 V. AC specs include tACC = 120 ns, tCE = 120 ns, and tOE = 50 ns max. All values are listed in the "DC and AC Operating Range" and "AC Read Characteristics" tables for the AT49LV001NT-12JC variant.
AT49LV001NT-12JC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT49LV001NT-12JC FAQ
1.How can I place an order for AT49LV001NT-12JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV001NT-12JC 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-12JC reliable?
The price and inventory of AT49LV001NT-12JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV001NT-12JC is usually 5 days.
3.What payment methods are accepted for AT49LV001NT-12JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV001NT-12JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV001NT-12JC?
AT49LV001NT-12JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV001NT-12JC 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-12JC?
For technical support, including AT49LV001NT-12JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV001NT-12JC requirements.
6.How does Aetrix verify that AT49LV001NT-12JC is sourced from the original manufacturer or authorized distributors?
All AT49LV001NT-12JC 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-12JC meets industry standards.
7.What is the process for return or replacement of AT49LV001NT-12JC?
All AT49LV001NT-12JC units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV001NT-12JC, 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-12JC part is unused and in its original packaging.
Return procedure for AT49LV001NT-12JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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