My Inquiry
My Account
Microchip Technology AT49F001ANT-45VI
- Part No.:
- AT49F001ANT-45VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT49F001ANT-45VI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,823
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49F001ANT-45VI from Atmel is a 1 Mbit (128K × 8) 5V-only in-system reprogrammable Flash memory IC used for nonvolatile code and data storage in embedded microcontroller systems. It delivers 45 ns read access time, supports byte-by-byte programming at 30 µs/byte, features sector architecture with boot block lockout, and operates across the industrial temperature range (–40°C to +85°C).
For engineers reviewing the AT49F001ANT-45VI datasheet, AT49F001ANT-45VI pinout, AT49F001ANT-45VI application, or AT49F001ANT-45VI equivalent, this page provides verified technical context, real-world use cases, validated alternatives, and supply-chain support for industrial firmware storage designs requiring reliable 5V Flash with hardware data protection and fast erase cycles.
Technical Context
The AT49F001ANT-45VI implements a sector-based Flash architecture comprising one 16K-byte boot block (address range 1C000H–1FFFFH), two 8K-byte parameter blocks, and two main memory blocks (32K and 64K bytes). Its command-set-driven operation uses standard CE/OE/WE control logic compatible with microprocessor buses, enabling EPROM-like read behavior and software-controlled erase/program sequences.
It integrates internal program control logic and timers, supports DATA polling and toggle-bit status detection for cycle completion, and includes hardware safeguards: VCC sense (<3.8V inhibits programming), noise filtering on WE/CE inputs, and write-inhibit via control pin states. The RESET pin enables boot block override at 12V - a feature confirmed active for AT49F001ANT variants per datasheet note.
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 data in 8-bit/16-bit MCU systems. |
| Read Access Time | 45 ns max - enables direct execution from Flash (XIP) in timing-critical embedded applications without wait states at 5 MHz bus clocks. |
| Byte Programming Time | 30 µs typical - allows rapid field updates of small firmware patches or calibration tables without full chip erase. |
| Erase Cycle Time | 3 seconds max for full chip erase - balances speed and reliability for production programming and in-system recovery. |
| Power Dissipation | 20 mA active current / 50 µA CMOS standby - supports low-power modes in battery-backed or energy-conscious industrial controllers. |
| Endurance | 10,000 program/erase cycles - validated for long-term firmware update cycles in deployed equipment with scheduled maintenance windows. |
| Operating Voltage | 5.0 V ±10% - single-supply compatibility simplifies power design versus multi-voltage Flash requiring 12V programming. |
| Temperature Range | –40°C to +85°C (industrial grade) - qualified for use in motor drives, PLC modules, and outdoor instrumentation. |
Pinout & Package
AT49F001ANT-45VI is supplied in a 32-lead Plastic VSOP (Very Small Outline Package), 8 mm × 14 mm body size, JEDEC MO-142 BA-compliant, with gull-wing leads and pin 1 identifier marked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A11–A16 are don't-care during command entry per datasheet Note 1. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access; high state forces outputs to high-Z and enables CMOS standby mode (50 µA). |
| OE | Output Enable | Active-low output control; used with CE to prevent bus contention; high state disables outputs regardless of CE/WE state. |
| WE | Write Enable | Active-low write strobe; latches address/data during programming/erase command sequences; held high to inhibit all write operations. |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface for read data output and program data input; supports DATA polling on I/O7 and toggle-bit detection on I/O6. |
| RESET | Reset Input | Active-low reset halts ongoing operations and places outputs in high-Z; 12V input overrides boot block lockout - confirmed functional for AT49F001ANT variant per datasheet Section 3 and Note 6. |
| VCC | Power Supply | +5.0 V ±10% supply; internal voltage regulation ensures stable programming margins; VCC sense circuitry disables programming if voltage drops below ~3.8 V. |
| GND | Ground Reference | Signal and power ground reference for all I/O and internal logic; decoupling capacitor required per datasheet layout guidelines. |
| NC | No Connect | Pin 32 (VSOP) is no-connect - must remain unconnected per datasheet Pin Configurations diagram and Note *. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture with Boot Block Lockout | 16K-byte boot block (1C000H–1FFFFH) can be permanently write-protected via command sequence, ensuring secure bootloader integrity while allowing runtime updates to application sectors. |
| Hardware Data Protection | VCC sense, noise filtering (<15 ns pulse rejection), and control-pin interlock (OE low / CE high / WE high inhibits programming) prevent accidental writes during power transients or EMI events. |
| DATA Polling & Toggle-Bit Status | I/O7 complement feedback and I/O6 toggling provide real-time, software-readable confirmation of program/erase completion - eliminates need for fixed delay timers in host firmware. |
| 12V RESET Override | Applying 12.0 V ±0.5 V to RESET pin temporarily disables boot block lockout, enabling emergency reprogramming of protected sectors - a verified capability for AT49F001ANT per datasheet Sections 3 and 5. |
| Single 5V Supply Operation | Eliminates requirement for external high-voltage generators; simplifies PCB layout and reduces BOM count compared to older Flash devices needing 12V programming. |
Applications
| Industrial PLC Firmware Storage | Embedded Controller Boot Memory |
|---|---|
|
Use Scenario: Storing boot loader and firmware images in programmable logic controllers operating in factory-floor environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Nonvolatile code storage device providing XIP-capable read access and in-system reprogrammability for field firmware upgrades. Use Value: 45 ns access time enables zero-wait-state execution; 10,000-cycle endurance supports decades of scheduled firmware updates; industrial temp rating ensures reliability in uncontrolled enclosures. |
Use Scenario: Holding secure startup code and configuration parameters in HVAC controllers, where tamper resistance and long-term data retention are critical. IC Role / Device Role / Timing Role: Boot memory IC with hardware-enforced write protection on designated boot sector to prevent corruption during power loss or software faults. Use Value: Boot block lockout prevents unauthorized modification; 12V RESET override allows authorized recovery; 50 µA standby current extends battery backup life during mains failure. |
| Medical Device Configuration Storage | Automotive Diagnostic Module Memory |
|
Use Scenario: Retaining calibrated sensor offsets, user preferences, and regulatory compliance logs in portable diagnostic equipment subject to strict traceability requirements. IC Role / Device Role / Timing Role: Parameter storage device with sector-erasable architecture enabling selective update of calibration data without disturbing core firmware. Use Value: Two independent 8K-byte parameter blocks allow A/B versioning; DATA polling ensures deterministic update timing for audit-trail logging; 5V-only operation simplifies medical-grade power design. |
Use Scenario: Storing OBD-II protocol stacks and vehicle-specific calibration maps in aftermarket diagnostic tools requiring robust field updates over CAN interfaces. IC Role / Device Role / Timing Role: Firmware repository IC interfacing with 8-bit microcontrollers via standard parallel bus, supporting rapid reflash during service events. Use Value: 3-second chip erase enables quick tool reconfiguration; sector erase capability isolates map updates from protocol stack; hardware write protection guards against misflash events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV001BT-45EI | 45 ns access, 1 Mbit, 3.0 V core / 5.0 V I/O; requires 3.3 V supply rail and level-shifting for pure 5V systems. | Designed for mixed-voltage systems; lacks 12V RESET override and boot block lockout override capability. | Select when migrating to lower-power 3.3 V domains; avoid if legacy 5V-only bus and emergency boot recovery are required. |
| SST39VF010-45-4C-NHE | 45 ns access, 1 Mbit, 3.3 V only; no 5V operation; different command set and sector map (32K uniform sectors). | Requires full system voltage redesign; boot block protection implemented via software lock bits, not hardware RESET override. | Choose for new 3.3 V designs prioritizing cost and density; not suitable as drop-in replacement for AT49F001ANT-45VI in existing 5V hardware. |
Compared with AM29LV001BT-45EI and SST39VF010-45-4C-NHE, the AT49F001ANT-45VI uniquely combines true 5V-only operation, hardware-enforced boot block protection with 12V override, and industrial-grade reliability - making it irreplaceable in legacy 5V embedded systems requiring field-recoverable firmware security.
Availability
AT49F001ANT-45VI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, embedded controller boot memory, medical device configuration storage, and automotive diagnostic module memory requiring stable component supply and long-term lifecycle support.
Supply support for AT49F001ANT-45VI 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 fabless semiconductor company specializing in microcontrollers, Flash memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT49F001A(N)(T) family was designed as a 5V-only, in-system reprogrammable Flash memory solution targeting cost-sensitive, reliability-critical embedded systems requiring secure boot code storage and field-upgradable firmware.
FAQ
What is the function of the RESET pin on the AT49F001ANT-45VI?
The RESET pin on the AT49F001ANT-45VI serves dual roles: as an active-low reset signal that halts ongoing operations and places outputs in high-impedance state, and - critically - as a 12V override input to temporarily disable boot block programming lockout. This 12V capability is explicitly confirmed for the AT49F001ANT variant in the datasheet's "Boot Block Programming Lockout Override" section and distinguishes it from the AN(T) version where RESET is NC. The AT49F001ANT-45VI leverages this feature for secure yet recoverable firmware architectures.
Does the AT49F001ANT-45VI support true 5V-only operation for both read and programming?
Yes, the AT49F001ANT-45VI supports true 5V-only operation: reads occur at 5V, and all programming and erase functions execute using only 5V supply and standard TTL-level control signals - no external high-voltage generator is needed. This is confirmed in the "Features" section ("Single-voltage Operation – 5V Read – 5V Reprogramming") and reinforced by the "Hardware Data Protection" subsection specifying VCC sense threshold at ~3.8V. The AT49F001ANT-45VI thus eliminates voltage translation complexity in legacy 5V system designs.
How is boot block protection implemented and verified on the AT49F001ANT-45VI?
Boot block protection on the AT49F001ANT-45VI is implemented via a six-command software sequence that permanently enables lockout for the 16K-byte boot sector (1C000H–1FFFFH). Verification is performed in Software Product Identification mode: reading address 1C002H returns I/O0 = high if lockout is active. This mechanism - including the specific address offset and command flow - is documented for AT49F001A(N)T variants in the "Boot Block Lockout Detection" section. The AT49F001ANT-45VI inherits this exact behavior as a member of the A(N)(T) family.
What package type does the AT49F001ANT-45VI use, and what are its key mechanical dimensions?
The AT49F001ANT-45VI uses the 32-lead Plastic VSOP (Very Small Outline Package), designated as package code 32V per Atmel's ordering information table. Its body measures 8.0 mm × 14.0 mm (nominal), with 0.50 mm lead pitch, gull-wing leads, and JEDEC MO-142 Variation BA compliance. Key dimensions include D = 14.0 mm (length), E = 8.0 mm (width), and A2 = 1.00 mm (package thickness), as specified in the "32V – VSOP" drawing on page 17 of the datasheet.
Can the AT49F001ANT-45VI be used interchangeably with the AT49F001A-45VI or AT49F001AN-45VI?
No - the AT49F001ANT-45VI is not interchangeable with AT49F001A-45VI or AT49F001AN-45VI due to critical functional differences. The "T" suffix denotes top-boot architecture (boot block at 1C000H–1FFFFH), whereas base "A" has bottom-boot (00000H–03FFFH); the "N" suffix indicates PLCC/TSOP/VSOP packaging compatibility but omits the RESET pin functionality. Only the AT49F001ANT-45VI provides the 12V RESET override for boot block reprogramming - a feature absent in both A and AN variants per datasheet notes and pin configuration diagrams.
AT49F001ANT-45VI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.488", 12.40mm 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:
- 45 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VSOP
AT49F001ANT-45VI FAQ
1.How can I place an order for AT49F001ANT-45VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F001ANT-45VI 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 AT49F001ANT-45VI reliable?
The price and inventory of AT49F001ANT-45VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F001ANT-45VI is usually 5 days.
3.What payment methods are accepted for AT49F001ANT-45VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F001ANT-45VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F001ANT-45VI?
AT49F001ANT-45VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F001ANT-45VI 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 AT49F001ANT-45VI?
For technical support, including AT49F001ANT-45VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F001ANT-45VI requirements.
6.How does Aetrix verify that AT49F001ANT-45VI is sourced from the original manufacturer or authorized distributors?
All AT49F001ANT-45VI 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 AT49F001ANT-45VI meets industry standards.
7.What is the process for return or replacement of AT49F001ANT-45VI?
All AT49F001ANT-45VI units undergo pre-shipment inspection (PSI). If there is an issue with AT49F001ANT-45VI, 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 AT49F001ANT-45VI part is unused and in its original packaging.
Return procedure for AT49F001ANT-45VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F001ANT-45VI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
