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Microchip Technology AT49F001ANT-45TI
- Part No.:
- AT49F001ANT-45TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F001ANT-45TI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT49F001ANT-45TI from Atmel is a 5V-only, 1 Mbit (128K × 8) in-system reprogrammable Flash memory with 45 ns read access time, 3-second chip erase cycle, 30 µs/byte programming, and hardware data protection including VCC sense and noise filtering. It features sector architecture with a 16K-byte boot block (address range 1C000H–1FFFFH), two 8K-byte parameter blocks, and two main memory blocks (32K + 64K bytes), used in embedded system boot code storage and firmware update applications.
For engineers reviewing the AT49F001ANT-45TI datasheet, AT49F001ANT-45TI pinout, AT49F001ANT-45TI application, or AT49F001ANT-45TI equivalent, key selection criteria include industrial temperature support (−40°C to +85°C), PLCC/TSOP/VSOP package compatibility, boot block lockout capability, DATA polling and toggle bit for program/erase status detection, and 5V-only command interface without high-voltage programming.
Technical Context
The AT49F001ANT-45TI implements a standard parallel Flash architecture with CE/OE/WE control logic, internal program timer, and command-register-based operation. Its sector erase and byte-programming functions are executed via six-cycle software command sequences (e.g., 555H/AAH → AAH/55H → 555H/80H → 555H/AAH → AAH/55H → 555H/40H for boot lockout enable).
It supports hardware reset-driven boot block override (12V on RESET pin), DATA polling on I/O7, and toggle-bit monitoring on I/O6 during program/erase cycles. The device uses CMOS standby current <50 µA and active current ≤20 mA, with absolute maximum ratings including −0.6V to +6.25V input voltage and −55°C to +125°C bias temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - enables full BIOS or bootloader storage in single device |
| Read Access Time | 45 ns max - meets timing requirements for 16-bit microcontroller bus interfaces at ≤22 MHz |
| Erase Cycle Time | 3 seconds typical for full chip erase - allows rapid field firmware updates without external eraser |
| Byte Programming Time | 30 µs typical - supports efficient patch-level code modification in embedded systems |
| Operating Voltage | 5V ±10% - eliminates need for dedicated programming voltage supply in 5V systems |
| Temperature Range | −40°C to +85°C industrial grade - qualified for automotive body control and industrial HMI applications |
| Standby Current | 50 µA CMOS - enables low-power sleep modes in battery-backed or energy-sensitive designs |
Pinout & Package
AT49F001ANT-45TI is available in 32-lead TSOP (Type I, 8 × 20 mm, package code 32T) and PLCC (32J) packages. For TSOP, pin 1 is A11; pin 9 is NC (no connect). RESET pin is functional and supports 12V override of boot block lockout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A11–A16 don't care in some command cycles |
| 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 control; used with CE to prevent bus contention during read |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming |
| RESET | Reset Input | Active-low reset; 12V pulse enables boot block reprogramming even when lockout is active |
| I/O0–I/O7 | Data Bus | Bi-directional 8-bit data interface; I/O7 used for DATA polling, I/O6 for toggle-bit status monitoring |
| VCC / GND | Power Supply | 5V supply and ground; VCC sense circuitry inhibits programming if voltage drops below 3.8V |
| NC | No Connect | Pin 9 in TSOP and pin 1 in PLCC are unconnected - must be left floating or tied to ground per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture with Boot Block Lockout | 16K-byte boot sector (1C000H–1FFFFH) can be permanently write-protected to preserve secure startup code |
| Hardware Data Protection | VCC sense, noise filtering (<15 ns pulse rejection), and control-line inhibit (OE low/CE high/WE high blocks programming) |
| End-of-Operation Detection | DATA polling (I/O7 complement → true data) and toggle-bit (I/O6 toggling → stable data) eliminate need for fixed delay timers |
| In-System Reprogrammability | 5V-only command set enables firmware updates via standard microcontroller GPIO without external HV programmer |
| Industrial Temperature Operation | Guaranteed 45 ns access and full functionality across −40°C to +85°C - suitable for under-hood and factory-floor environments |
Applications
| Embedded System Boot Code Storage | Firmware Update Module |
|---|---|
Use Scenario: Storing bootloader and initialization code for microcontrollers in industrial PLCs and medical devices. IC Role / Device Role / Timing Role: Nonvolatile program memory providing deterministic power-on execution path with 45 ns read latency. Use Value: Boot block lockout prevents accidental corruption of critical startup routines during field firmware upgrades. |
Use Scenario: Field-upgradable firmware storage in network routers and telecom base station controllers. IC Role / Device Role / Timing Role: In-system reprogrammable Flash enabling over-the-air or local firmware patches without hardware replacement. Use Value: 3-second chip erase and 30 µs/byte programming allow sub-second firmware revision switching in production environments. |
| Automotive Body Control Unit | Industrial Human-Machine Interface |
Use Scenario: Storing configuration tables and calibration data in vehicle door modules and lighting controllers. IC Role / Device Role / Timing Role: Parameter block (8K × 2) stores user-modifiable settings with independent sector erase capability. Use Value: Sector-level erase isolates parameter updates from main firmware, reducing risk of bricking the device during partial rewrites. |
Use Scenario: Storing GUI assets, language packs, and operational logic in factory HMIs and CNC operator panels. IC Role / Device Role / Timing Role: Main memory block (32K + 64K) holds application binaries and persistent UI state data. Use Value: 50 µA CMOS standby current extends battery life in portable or backup-powered HMI units during idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV001BT-45RE | 45 ns access, 1 Mbit, 3.0V–3.6V core voltage (not 5V-only); requires VPP = 12V for programming | Not pin-compatible; requires level-shifting and separate programming voltage rail | Select only if migrating to 3.3V system architecture and redesigning power delivery |
| SST39VF010-45-4C-NHE | 45 ns access, 1 Mbit, 3.3V operation, no RESET pin; boot block at 00000H–03FFFH (not top-aligned) | Lacks 12V RESET override; boot block location differs - incompatible with existing AT49F001ANT-45TI address-mapped firmware | Consider only for new 3.3V designs where boot block placement flexibility is acceptable |
Compared with AM29LV001BT-45RE and SST39VF010-45-4C-NHE, the AT49F001ANT-45TI offers native 5V-only operation, top-aligned boot block (1C000H–1FFFFH), and hardware RESET-based lockout override - making it uniquely suited for legacy 5V embedded systems requiring secure, field-upgradable boot code.
Availability
AT49F001ANT-45TI is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, embedded boot code storage, and firmware update modules requiring stable component supply across extended lifecycle demands.
Supply support for AT49F001ANT-45TI 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, with design heritage in nonvolatile memory innovation.
The AT49F001A(N)(T) family was designed for cost-sensitive, 5V embedded systems requiring reliable in-system reprogrammability, boot code integrity, and industrial-grade temperature performance - targeting legacy industrial and automotive applications.
FAQ
What is the boot block address range for AT49F001ANT-45TI?
The AT49F001ANT-45TI has its 16K-byte boot block located at address range 1C000H to 1FFFFH - distinct from the AT49F001A(N) variant which places the boot block at 00000H–03FFFH. This top-aligned mapping ensures compatibility with systems that load startup code from upper memory addresses. The AT49F001ANT-45TI supports boot block lockout activation via a six-cycle command sequence, after which the region becomes write-protected under standard 5V operation.
Does AT49F001ANT-45TI support 12V programming or only 5V operation?
The AT49F001ANT-45TI is a 5V-only Flash memory: all read, program, and erase operations use standard 5V supply with no external high-voltage programming required. However, the RESET pin accepts a 12V ±0.5V pulse to override boot block lockout - this is strictly for unlocking protected sectors and does not constitute general-purpose 12V programming. The AT49F001ANT-45TI itself draws power only from VCC = 5V ±10%.
How is end-of-program detection implemented in AT49F001ANT-45TI?
The AT49F001ANT-45TI provides two hardware-supported end-of-program detection methods: DATA polling (reading the programmed byte returns its complement on I/O7 until completion, then true data) and toggle-bit monitoring (I/O6 toggles between 0 and 1 during operation and stabilizes upon completion). Both methods eliminate reliance on fixed timing delays and enable precise synchronization in microcontroller firmware. These features are fully supported in the AT49F001ANT-45TI and require no additional external components.
What package options are available for AT49F001ANT-45TI?
The AT49F001ANT-45TI is offered in three industry-standard 32-lead packages: 32T (TSOP, 8 × 20 mm), 32J (PLCC), and 32V (VSOP, 8 × 14 mm). Pin 9 is NC in TSOP; pin 1 is NC in PLCC. The RESET pin is functional in all variants and supports 12V override. Package drawings conform to JEDEC MO-142 (TSOP/VSOP) and MS-016 (PLCC), with coplanarity ≤0.10 mm (TSOP/VSOP) or ≤0.102 mm (PLCC).
Can AT49F001ANT-45TI be used as a direct replacement for AT49F001A-45TI?
No - AT49F001ANT-45TI is not a direct replacement for AT49F001A-45TI due to fundamental differences in boot block location (1C000H–1FFFFH vs. 00000H–03FFFH) and RESET pin functionality (functional in AT49F001ANT-45TI, NC in AT49F001AN(T)). Firmware addressing, lockout command execution, and hardware reset behavior differ. Migration requires validation of address map alignment, RESET circuit integration, and boot code relocation - the AT49F001ANT-45TI must be treated as a distinct variant, not a drop-in substitute.
AT49F001ANT-45TI 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:
- 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-TSOP
AT49F001ANT-45TI FAQ
1.How can I place an order for AT49F001ANT-45TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F001ANT-45TI 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-45TI reliable?
The price and inventory of AT49F001ANT-45TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F001ANT-45TI is usually 5 days.
3.What payment methods are accepted for AT49F001ANT-45TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F001ANT-45TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F001ANT-45TI?
AT49F001ANT-45TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F001ANT-45TI 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-45TI?
For technical support, including AT49F001ANT-45TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F001ANT-45TI requirements.
6.How does Aetrix verify that AT49F001ANT-45TI is sourced from the original manufacturer or authorized distributors?
All AT49F001ANT-45TI 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-45TI meets industry standards.
7.What is the process for return or replacement of AT49F001ANT-45TI?
All AT49F001ANT-45TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49F001ANT-45TI, 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-45TI part is unused and in its original packaging.
Return procedure for AT49F001ANT-45TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F001ANT-45TI Tags
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