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Microchip Technology AT49BV001NT-12TC
- Part No.:
- AT49BV001NT-12TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV001NT-12TC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,548
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Product details
Overview
AT49BV001NT-12TC from Atmel is a 1 Mbit (128K × 8) single-supply 2.7–3.6 V in-system reprogrammable Flash memory with 120 ns read access time, sector-based architecture (16 KB boot block + two 8 KB parameter blocks + two main memory blocks), hardware data protection, and DATA polling for end-of-program detection. It is used in embedded firmware storage for industrial controllers requiring field-upgradable boot code.
For engineers reviewing the AT49BV001NT-12TC datasheet, AT49BV001NT-12TC pinout, AT49BV001NT-12TC application, or AT49BV001NT-12TC equivalent, key selection criteria include boot block lockout capability, 120 ns read timing, TSOP-32 package compatibility, sector erase flexibility, and 10,000 write/erase cycle endurance under industrial temperature range (−40°C to +85°C).
Technical Context
The AT49BV001NT-12TC implements a command-register-based programming interface using standard microprocessor CE/OE/WE control lines, supporting byte-by-byte programming (30 µs typical), software-controlled sector or chip erase, and toggle-bit or DATA polling for operation completion detection. Its internal logic handles voltage-level-sensitive boot block lockout activation and override via 12 V RESET input.
It features dual-line bus contention prevention (CE+OE active-low read), VCC sense circuitry inhibiting program operations below 1.8 V, and noise filtering rejecting sub-15 ns pulses on WE/CE. The device supports hardware and software product identification modes, with manufacturer code 1FH and device code 04H specific to the (N)T variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - directly maps to 128 KB firmware image storage |
| Read Access Time | 120 ns max - determines minimum CPU wait-state insertion for 8-bit parallel bus interfacing |
| Supply Voltage | 2.7 V to 3.6 V - enables direct connection to 3.3 V system rails without level-shifting |
| Active Current | 25 mA typical - defines peak power budget during read bursts in battery-backed or low-power systems |
| Standby Current | 50 µA CMOS - ensures ultra-low quiescent draw during firmware idle periods |
| Erase Cycle Time | 10 seconds max (chip or sector) - sets worst-case firmware update latency for field reprogramming |
| Write Endurance | 10,000 program/erase cycles - quantifies lifetime for applications requiring frequent parameter updates |
Pinout & Package
AT49BV001NT-12TC is packaged in a 32-lead Plastic Thin Small Outline Package (TSOP, Type 1, 8 × 20 mm), pin-compatible with industry-standard 32-pin Flash memory footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A16 required for accessing upper memory blocks |
| I/O0–I/O7 | Data Inputs/Outputs | 8-bit bidirectional data bus; supports byte-wide reads/writes without multiplexing |
| 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; enables data bus drivers only when CE is also low |
| WE | Write Enable | Active-low write strobe; latches address/data during programming/erase command sequences |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-impedance outputs; 12 V input enables boot block override |
| VCC | Power Supply | 2.7–3.6 V primary supply; powers core logic, I/O buffers, and internal charge pumps |
| GND | Ground | Reference return path for all signals and power; requires low-inductance PCB connection |
| NC | No Connect | Pin 16 in TSOP package - must remain unconnected per datasheet; not internally bonded |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16 KB protected region (address 1C000H–1FFFFH) prevents accidental overwrite of critical boot code; enabled via 6-cycle command sequence |
| Sector Architecture | Independent erasability of two 8 KB parameter blocks and two main memory blocks (32 KB + 64 KB) enables modular firmware updates without full chip erase |
| Hardware Data Protection | VCC sense, noise filtering (<15 ns pulse rejection), and CE/OE/WE interlock prevent spurious writes during power transients or EMI events |
| DATA Polling & Toggle Bit | Real-time status feedback via I/O7 complement or I/O6 toggling eliminates need for fixed delay timers in host firmware |
| 12 V RESET Override | Applying 12 V ± 0.5 V to RESET pin temporarily disables boot block lockout during chip/sector erase or byte programming |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing field-upgradable ladder logic and configuration parameters in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with 120 ns read access enabling real-time scan cycle execution; boot block lockout secures startup routines. Use Value: Ensures deterministic boot behavior and prevents corruption during brown-out conditions or ESD events due to hardware write protection and VCC sensing. | Use Scenario: Holding certified bootloader and safety-critical initialization code in FDA-regulated diagnostic equipment requiring traceable firmware revisions. IC Role / Device Role / Timing Role: Secure, tamper-resistant boot memory with 10,000-cycle endurance for periodic regulatory-mandated updates. Use Value: Enables audit-compliant firmware versioning and rollback via sector-erase isolation-parameter blocks retain calibration data while main memory receives new application binaries. |
| Automotive Body Control Module | Network Router Configuration Storage |
Use Scenario: Storing vehicle-specific configuration tables (e.g., door lock logic, lighting profiles) in body control units exposed to −40°C to +85°C thermal cycling. IC Role / Device Role / Timing Role: Industrial-grade Flash memory with 50 µA standby current minimizing battery drain during vehicle sleep mode. Use Value: Guarantees reliable parameter retention over 15-year service life via 10,000-cycle endurance and robust data polling for verified write completion. | Use Scenario: Retaining VLAN mapping, QoS policies, and firmware patches across reboots in enterprise-grade Ethernet switches. IC Role / Device Role / Timing Role: Parallel-interface configuration store interfaced to ARM9 or MIPS-based switch controllers via 8-bit data bus. Use Value: Sector-erase capability allows atomic updates of policy tables without disrupting active packet forwarding-main memory blocks operate independently. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT49BV001NT-12TI | Same die and pinout, but packaged in TSOP-32 with industrial temperature rating (−40°C to +85°C); identical 120 ns timing and boot block layout | Identical functional use case; differs only in packaging and screening-no design change required | Select when board-level thermal validation confirms sustained operation above 70°C ambient |
| SST39VF010-120-4C-NHE | 1 Mbit Flash with 120 ns access, but uses different command set (SST proprietary), no 12 V RESET override, and lacks boot block lockout override capability | Requires firmware driver rewrite for command sequences; unsuitable where boot block reprogramming under lockout is mandatory | Choose only if SST's faster byte-program time (10 µs vs. 30 µs) outweighs loss of Atmel-specific security features |
Compared with AT49BV001NT-12TC, the AT49BV001NT-12TI offers identical functionality in an industrial-grade screened package, while SST39VF010-120-4C-NHE provides comparable speed but sacrifices boot block security flexibility and requires command-set adaptation.
Availability
AT49BV001NT-12TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader memory, and automotive body control module applications requiring stable component supply, long-term lifecycle support, and guaranteed TSOP-32 package availability.
Supply support for AT49BV001NT-12TC 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 embedded systems.
The AT49BV/LV001(N)(T) family was designed for cost-sensitive, space-constrained embedded applications needing reliable in-system reprogrammable nonvolatile storage with hardware-enforced boot code protection.
FAQ
What is the boot block address range for AT49BV001NT-12TC?
The boot block for AT49BV001NT-12TC occupies addresses 1C000H to 1FFFFH (16 KB). This differs from non-(T) variants, which locate the boot block at 00000H–03FFFH. The (T) suffix denotes this relocated boot sector, confirmed in the datasheet's memory map and command definitions section.
Does AT49BV001NT-12TC support 12 V RESET override for boot block programming?
Yes, AT49BV001NT-12TC supports 12 V RESET override: applying 12.0 V ± 0.5 V to the RESET pin during chip erase, sector erase, or byte programming temporarily disables the boot block lockout feature. This capability is explicitly documented for the (T) variant and is not available on (N)(T) or (N) versions without the T suffix.
What package type is used by AT49BV001NT-12TC?
AT49BV001NT-12TC uses a 32-lead Plastic Thin Small Outline Package (TSOP, Type 1, 8 × 20 mm), designated as package code "32T" in Atmel's ordering information. Pin 16 is NC (no connect), and the package is compatible with standard 32-pin Flash memory footprints.
How does DATA polling work on AT49BV001NT-12TC?
During programming, reading the last loaded byte returns the complement of the data on I/O7 until completion; once valid, true data appears. This allows host firmware to poll without fixed delays. AT49BV001NT-12TC implements this per the datasheet's DATA Polling Waveforms and Characteristics table, with tDH ≥ 10 ns hold requirement.
Is AT49BV001NT-12TC compatible with 5 V systems?
No, AT49BV001NT-12TC operates exclusively at 2.7–3.6 V and is not 5 V tolerant. All inputs (including OE) are rated only to VCC + 0.6 V, and absolute maximum ratings prohibit >6.25 V on any pin. Interfacing with 5 V buses requires level translation, as confirmed in the DC Characteristics and Absolute Maximum Ratings sections.
AT49BV001NT-12TC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- 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:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT49BV001NT-12TC FAQ
1.How can I place an order for AT49BV001NT-12TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV001NT-12TC 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 AT49BV001NT-12TC reliable?
The price and inventory of AT49BV001NT-12TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV001NT-12TC is usually 5 days.
3.What payment methods are accepted for AT49BV001NT-12TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV001NT-12TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV001NT-12TC?
AT49BV001NT-12TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV001NT-12TC 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 AT49BV001NT-12TC?
For technical support, including AT49BV001NT-12TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV001NT-12TC requirements.
6.How does Aetrix verify that AT49BV001NT-12TC is sourced from the original manufacturer or authorized distributors?
All AT49BV001NT-12TC 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 AT49BV001NT-12TC meets industry standards.
7.What is the process for return or replacement of AT49BV001NT-12TC?
All AT49BV001NT-12TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV001NT-12TC, 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 AT49BV001NT-12TC part is unused and in its original packaging.
Return procedure for AT49BV001NT-12TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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