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Microchip Technology AT49F001NT-70JC
- Part No.:
- AT49F001NT-70JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49F001NT-70JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,397
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Product details
Overview
AT49F001NT-70JC from Microchip Technology (formerly Atmel) is a 5V-only, 1 Mbit (128K × 8) in-system reprogrammable Flash memory IC used for nonvolatile code and data storage in embedded controllers and boot loaders. It features 55 ns read access time, 10 µs/byte typical programming, 10-second chip erase, hardware data protection, and sector architecture with a 16 KB boot block (address range 1C000H–1FFFFH) supporting programming lockout.
For engineers reviewing the AT49F001NT-70JC datasheet, AT49F001NT-70JC pinout, AT49F001NT-70JC application, or AT49F001NT-70JC equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use scenarios in industrial control and firmware update systems, and two validated alternative parts with documented functional and layout implications.
Technical Context
The AT49F001NT-70JC implements a standard parallel Flash interface with CE/OE/WE control logic and supports command-based operations including byte programming, sector erase (two 8 KB parameter blocks + two main memory blocks), and full chip erase. Its internal program control logic eliminates external high-voltage requirements, enabling 5 V-only in-circuit reprogramming.
It integrates DATA polling (I/O7 complement detection) and Toggle Bit (I/O6 toggling) for end-of-program/erase cycle detection, and includes VCC sense, noise filtering, and input-level inhibition to prevent inadvertent writes. The RESET pin enables system-level reset and - on non-N(T) variants - 12 V override of boot block lockout (not available on AT49F001NT-70JC).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - sufficient for boot code, configuration tables, and firmware images in resource-constrained microcontroller systems. |
| Read Access Time | 70 ns max - meets timing requirements for 14 MHz bus interfaces without wait states in commercial-temperature embedded applications. |
| Byte Programming Time | 10 µs typical - enables rapid field updates of small data segments without disrupting system operation. |
| Chip Erase Time | 10 seconds - allows predictable firmware recovery cycles during manufacturing or field service. |
| Endurance | 10,000 write/erase cycles - supports long-term field deployment in industrial logging and calibration storage. |
| Standby Current | 100 µA CMOS - minimizes power draw in battery-backed or low-power sleep modes. |
| Operating Voltage | 5.0 V ±10% - compatible with legacy 5 V logic families and avoids need for auxiliary voltage regulators. |
Pinout & Package
AT49F001NT-70JC is supplied in a 32-lead Plastic Leaded Chip Carrier (PLCC) package (JEDEC MS-016, Variation AE), with lead pitch 1.27 mm, body size 12.5 mm × 14.9 mm, and pin 1 identifier marked by corner notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A16 is active for upper memory region (1C000H–1FFFFH boot block). |
| I/O0–I/O7 | Data Inputs/Outputs | 8-bit bidirectional data bus; I/O7 used for DATA polling, I/O6 for Toggle Bit status indication. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access; controls device selection on shared buses. |
| OE | Output Enable | Active-low output control; used with CE to manage bus contention and enable high-impedance tri-state during idle or write cycles. |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming; must be high for read mode. |
| RESET | Reset Input | Active-low reset signal; halts ongoing operations and forces outputs to high-Z; no 12 V override capability on AT49F001NT variant. |
| VCC | Power Supply | +5 V ±10% supply; powers core logic and I/O buffers; requires local decoupling per JEDEC guidelines. |
| GND | Ground | Reference ground for all signals and power; must be low-inductance connection to minimize noise coupling during erase/write. |
| NC | No Connect | Pin 1 (PLCC); electrically isolated - must remain unconnected to avoid unintended bias or leakage paths. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture with Boot Block Lockout | 16 KB boot block (1C000H–1FFFFH) programmable lockout prevents accidental overwrite of critical startup code while allowing runtime updates to parameter and main memory blocks. |
| Hardware Data Protection | VCC sense (<3.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and triple-input inhibit (OE low / CE high / WE high) eliminate spurious writes in noisy industrial environments. |
| Two End-of-Operation Detection Methods | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) provide software-flexible, bus-compatible verification of program/erase completion without external timers or clocks. |
| 5 V-Only Command Interface | Eliminates need for 12 V programming supplies or level shifters - simplifies PCB design and reduces BOM cost in 5 V systems. |
| Commercial Temperature Range | 0°C to +70°C operation - validated for stable performance in office equipment, consumer electronics, and non-harsh industrial enclosures. |
Applications
| Industrial PLC Firmware Storage | Embedded System Boot Loader |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast 70 ns read access and sector-erase capability for incremental firmware patching. Use Value: Enables field-upgradable logic programs without replacing hardware; boot block lockout ensures bootloader integrity across 10,000+ update cycles. |
Use Scenario: Hosting secure boot code and initialization routines for microcontrollers in medical diagnostic devices. IC Role / Device Role / Timing Role: Primary boot memory mapped at reset vector; supports hardware-controlled read access and software-triggered reprogramming. Use Value: Prevents unauthorized modification of startup sequence via 16 KB protected boot sector; 100 µA standby current extends battery life during standby. |
| Point-of-Sale Terminal Configuration | Network Router Boot Image |
Use Scenario: Retaining localized language packs, tax tables, and merchant-specific settings in retail POS terminals subject to frequent regulatory updates. IC Role / Device Role / Timing Role: Parameter storage with dual 8 KB erasable blocks - one for active config, one for staging next version. Use Value: Allows atomic configuration swaps using sector erase; 10 µs/byte programming enables sub-second update latency during store closing procedures. |
Use Scenario: Storing primary and fallback boot images in enterprise-grade routers requiring zero-downtime firmware upgrades. IC Role / Device Role / Timing Role: Dual-main-memory-block architecture (32 KB + 64 KB) supports A/B partitioning for fail-safe image switching. Use Value: Eliminates risk of bricking during upgrade; chip erase completes in ≤10 s, enabling rapid recovery from corrupted images. |
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 | 5 V, 1 Mbit, 70 ns access, PLCC32; lacks boot block lockout but offers byte-write without pre-erase. | No hardware-enforced boot protection; requires software-managed write disable for critical sectors. | Choose when simpler command set and lower cost outweigh need for hardware boot lockout. |
| MX29LV160CBTI-70G | 3 V/5 V tolerant, 16 Mbit, 70 ns, TSOP48; includes CFI-compliant command set and 16 KB boot sectors with lock bits. | Higher density and dual-voltage support; incompatible pinout and package - requires PCB redesign. | Choose for future-proofing, higher capacity, or mixed-voltage systems; not drop-in compatible. |
Compared with SST39VF010-70-4C-NHE and MX29LV160CBTI-70G, the AT49F001NT-70JC provides deterministic boot block protection and PLCC32 footprint compatibility with legacy 5 V designs, while avoiding the complexity of CFI command sets or voltage translation circuitry.
Availability
AT49F001NT-70JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, embedded system boot loader implementation, point-of-sale terminal configuration, and network router boot image retention requiring stable component supply over extended production lifecycles.
Supply support for AT49F001NT-70JC 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 the AT49F series Flash memories, leveraging decades of nonvolatile memory IP and manufacturing expertise.
The AT49F001NT-70JC belongs to Atmel's legacy parallel Flash product line, designed specifically for cost-sensitive, 5 V-based embedded systems requiring reliable in-system reprogrammability and hardware-level data protection.
FAQ
What is the boot block address range for AT49F001NT-70JC?
The AT49F001NT-70JC has a 16 KB boot block located at address range 1C000H to 1FFFFH. This differs from the base AT49F001N (00000H–03FFFH) and is explicitly defined in the datasheet for the "T" suffix variant. The boot block supports hardware programming lockout to protect critical startup code in the AT49F001NT-70JC.
Does AT49F001NT-70JC support 12 V RESET override for boot block reprogramming?
No. The AT49F001NT-70JC does not support 12 V override of the boot block lockout feature. This capability is explicitly excluded for the "N(T)" variant per the datasheet note: "The RESET feature is not available for the AT49F001N(T)." Once enabled, boot block protection on the AT49F001NT-70JC is permanent under standard 5 V operation.
What package type is used for AT49F001NT-70JC?
The AT49F001NT-70JC uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package, designated as 32J per Atmel's ordering information. Its dimensions conform to JEDEC MS-016, Variation AE, with body size 12.5 mm × 14.9 mm and pin 1 identified by a corner notch.
How is end-of-program detection implemented in AT49F001NT-70JC?
The AT49F001NT-70JC supports two hardware-assisted end-of-program detection methods: DATA polling (reading the 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 are usable at any time during the cycle and require no external timing components.
What is the maximum erase time for a single sector in AT49F001NT-70JC?
The AT49F001NT-70JC datasheet specifies a maximum chip erase time of 10 seconds, but does not define a separate maximum for individual sector erase. Sector erase is internally timed and completes within the same 10-second bound as chip erase; actual sector erase typically finishes faster, though the guaranteed worst-case remains 10 seconds per the device specification.
AT49F001NT-70JC 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:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT49F001NT-70JC FAQ
1.How can I place an order for AT49F001NT-70JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F001NT-70JC 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 AT49F001NT-70JC reliable?
The price and inventory of AT49F001NT-70JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F001NT-70JC is usually 5 days.
3.What payment methods are accepted for AT49F001NT-70JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F001NT-70JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F001NT-70JC?
AT49F001NT-70JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F001NT-70JC 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 AT49F001NT-70JC?
For technical support, including AT49F001NT-70JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F001NT-70JC requirements.
6.How does Aetrix verify that AT49F001NT-70JC is sourced from the original manufacturer or authorized distributors?
All AT49F001NT-70JC 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 AT49F001NT-70JC meets industry standards.
7.What is the process for return or replacement of AT49F001NT-70JC?
All AT49F001NT-70JC units undergo pre-shipment inspection (PSI). If there is an issue with AT49F001NT-70JC, 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 AT49F001NT-70JC part is unused and in its original packaging.
Return procedure for AT49F001NT-70JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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