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Microchip Technology AT49LV001-12JC
- Part No.:
- AT49LV001-12JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49LV001-12JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,219
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Product details
Overview
AT49LV001-12JC from Microchip Technology (formerly Atmel) is a 1 Mbit (128K × 8) single-supply 3.0–3.6 V 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 operation at 30 µs/byte, and hardware data protection with boot-block lockout. It is commonly deployed in industrial control firmware storage where in-system reprogrammability and sector-level erase flexibility are required.
For engineers reviewing the AT49LV001-12JC datasheet, AT49LV001-12JC pinout, AT49LV001-12JC application, or AT49LV001-12JC equivalent, key selection considerations include its PLCC-32 package, 120 ns access timing, boot-block write-protection capability, sector architecture (16K boot + dual 8K parameter + 32K/64K main blocks), and compatibility with standard microprocessor bus interfaces using CE/OE/WE control.
Technical Context
The AT49LV001-12JC implements a command-based software-controlled architecture for erase and program operations, eliminating need for high-voltage programming signals. Its internal logic supports DATA polling and Toggle Bit detection to monitor program/erase completion without external timing constraints.
It features a dedicated 16-Kbyte boot block (address range 00000H–03FFFH) with programmable lockout, two 8-Kbyte parameter blocks, and two main memory blocks (32K and 64K bytes). The device operates in standard EPROM-compatible read mode and supports hardware reset-driven boot-block override at 12 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8 bits), organized as 128K words × 8 bits - supports full firmware image storage for 8-bit microcontrollers. |
| Read Access Time | 120 ns - determines maximum bus clock rate for zero-wait-state CPU interface in commercial temperature range (0°C to 70°C). |
| Supply Voltage | 3.0 V to 3.6 V - single 3.3 V rail compatible; no 5 V or high-voltage programming required. |
| Erase Cycle Time | 10 seconds (typical) - enables rapid field firmware updates without external erasers. |
| Byte Programming Time | 30 µs (typical) - allows fine-grained patching of configuration or calibration data without full-chip erase. |
| 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 - suitable for infrequently updated boot code and parameter tables. |
Pinout & Package
AT49LV001-12JC is supplied in a 32-lead Plastic Leaded Chip Carrier (PLCC) package with J-leads, pin-compatible with industry-standard 32-pin PLCC footprints. Pin 1 is index corner; 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; A16 enables access beyond 64K boundary. |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface for read/write transfers; high-impedance during deselect or standby. |
| 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 drive to prevent contention on shared microprocessor buses. |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming. |
| RESET* | Reset Input | Active-low reset; halts ongoing operations and forces high-impedance outputs; 12 V input enables boot-block override. |
| VCC | Power Supply | 3.0–3.6 V supply; powers core logic and I/O buffers; requires local decoupling per layout guidelines. |
| GND | Ground Reference | Signal and power return; must be low-inductance connection to minimize noise coupling during erase/program pulses. |
| NC / DC | No Connect / Don't Connect | Pins 9 and 32 are unconnected; must remain floating - not tied to VCC, GND, or signals. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture with Boot Block Lockout | Enables secure firmware boot code storage (00000H–03FFFH) that remains protected while other sectors are updated - critical for fail-safe system recovery. |
| Single 3.3 V Operation | Eliminates need for charge pumps or external 12 V programming supplies - simplifies power design and reduces BOM count. |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulse rejection), and control-line interlock (OE low/CE high/WE high blocks writes) prevent accidental corruption. |
| DATA Polling & Toggle Bit | Allows host processor to poll status in real time without fixed delays - improves firmware efficiency and avoids over-timing worst-case erase windows. |
| 10,000 Write Cycles | Supports long-term field maintenance of calibration tables, logging buffers, or user-configurable parameters without premature wear-out. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing boot loader and application firmware in programmable logic controllers requiring field-upgradable code without hardware rework. IC Role / Device Role / Timing Role: Nonvolatile code storage with 120 ns read access enabling direct execution from flash (XIP) or fast load into RAM. Use Value: Sector erase allows updating only modified function modules while preserving validated safety-critical boot code in protected 16K boot block. |
Use Scenario: Retaining calibrated sensor offsets, patient-specific therapy settings, and regulatory audit logs in Class II medical electronics. IC Role / Device Role / Timing Role: Parameter storage with hardware write protection and DATA polling for deterministic update confirmation. Use Value: Boot-block lockout prevents accidental overwrite of FDA-approved boot firmware, while parameter blocks support traceable, versioned configuration changes. |
| Automotive Body Control Module (BCM) | Point-of-Sale Terminal Boot Memory |
Use Scenario: Holding vehicle-specific configuration (e.g., door lock logic, lighting profiles) and diagnostic event logs in automotive BCMs operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade Flash memory with 120 ns access and 50 µA standby current for low-power sleep modes. Use Value: Dual 8K parameter blocks allow A/B partitioning for atomic firmware updates; CMOS standby current minimizes battery drain during ignition-off periods. |
Use Scenario: Hosting secure bootloader and encrypted payment application images in PCI-compliant retail terminals subject to frequent security patches. IC Role / Device Role / Timing Role: Trusted boot memory with 12 V RESET override capability for emergency recovery when boot block becomes corrupted. Use Value: RESET-driven 12 V override enables field recovery without removing the device - essential for tamper-resistant, sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF010-120-4C-NHE | 1 Mbit, 120 ns, 3.0–3.6 V, PLCC-32; lacks boot-block lockout and 12 V RESET override. | Supports basic firmware storage but cannot enforce immutable boot code integrity. | Select when boot-block protection is unnecessary and cost sensitivity outweighs security requirements. |
| MX29LV001CTTI-12G | 1 Mbit, 120 ns, 3.0–3.6 V, PLCC-32; includes boot-block protection but uses different command set and lacks 12 V override. | Provides comparable sector protection but requires redesign of host firmware command sequences. | Select when migrating from legacy MXIC designs and RESET override is not required for recovery path. |
Compared with SST39VF010-120-4C-NHE and MX29LV001CTTI-12G, the AT49LV001-12JC uniquely combines boot-block lockout, 12 V RESET override, and Atmel's proven command-set compatibility - making it optimal for safety-critical or field-recoverable embedded systems where firmware integrity is non-negotiable.
Availability
AT49LV001-12JC is available at Aetrix Electronics and suitable for industrial control firmware storage, medical device configuration memory, and automotive body control module applications requiring stable component supply, long-lifecycle support, and guaranteed PLCC-32 packaging consistency.
Supply support for AT49LV001-12JC 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
Microchip Technology acquired Atmel in 2016 and continues to manufacture and support legacy Atmel Flash products including the AT49LV series. The company specializes in microcontrollers, analog, Flash memory, and security ICs for industrial, automotive, and consumer markets.
The AT49LV001-12JC belongs to Atmel's Battery-Voltage™ Flash memory product line, designed specifically for reliable, single-supply in-system reprogrammability in space-constrained embedded systems operating from 3.3 V rails.
FAQ
What is the operating voltage range for the AT49LV001-12JC?
The AT49LV001-12JC operates from 3.0 V to 3.6 V DC. This single-supply range eliminates the need for separate programming voltages and ensures compatibility with standard 3.3 V logic systems. Operation below 3.0 V disables programming functions via internal VCC sense circuitry, preventing inadvertent writes during brown-out conditions.
Does the AT49LV001-12JC support in-system programming without external high-voltage signals?
Yes, the AT49LV001-12JC supports full in-system reprogrammability using only its 3.0–3.6 V VCC supply. All erase and program operations are initiated via six-byte software command sequences written to specific address locations - no external 12 V or 5 V programming voltage is required under normal operation.
What is the purpose of the RESET pin on the AT49LV001-12JC, and does it support boot-block override?
The RESET pin on the AT49LV001-12JC serves dual roles: as an active-low reset signal to halt operations and force high-impedance outputs, and - when driven to 12.0 V ± 0.5 V - as a boot-block programming override enable. This 12 V feature allows reprogramming of the locked 16K boot sector even after lockout activation, providing a critical field recovery mechanism.
How is the memory organized in the AT49LV001-12JC, and what are the sector sizes?
The AT49LV001-12JC organizes its 1 Mbit array into five distinct sectors: one 16-Kbyte boot block (00000H–03FFFH), two 8-Kbyte parameter blocks, and two main memory blocks sized 32 Kbytes and 64 Kbytes. This architecture enables selective erasure - for example, updating calibration data in a parameter block without affecting boot code or application firmware.
What methods does the AT49LV001-12JC provide to detect completion of program or erase operations?
The AT49LV001-12JC provides two hardware-supported detection methods: DATA polling (reading the last programmed byte returns its complement on I/O7 until completion) and Toggle Bit (I/O6 toggles between 0 and 1 during operation and stabilizes upon completion). Both methods eliminate reliance on fixed timing delays and improve host firmware robustness.
AT49LV001-12JC 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)
AT49LV001-12JC FAQ
1.How can I place an order for AT49LV001-12JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49LV001-12JC 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 AT49LV001-12JC reliable?
The price and inventory of AT49LV001-12JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49LV001-12JC is usually 5 days.
3.What payment methods are accepted for AT49LV001-12JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49LV001-12JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49LV001-12JC?
AT49LV001-12JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49LV001-12JC 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 AT49LV001-12JC?
For technical support, including AT49LV001-12JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49LV001-12JC requirements.
6.How does Aetrix verify that AT49LV001-12JC is sourced from the original manufacturer or authorized distributors?
All AT49LV001-12JC 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 AT49LV001-12JC meets industry standards.
7.What is the process for return or replacement of AT49LV001-12JC?
All AT49LV001-12JC units undergo pre-shipment inspection (PSI). If there is an issue with AT49LV001-12JC, 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 AT49LV001-12JC part is unused and in its original packaging.
Return procedure for AT49LV001-12JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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