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Microchip Technology AT49F002T-12TI
- Part No.:
- AT49F002T-12TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F002T-12TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,421
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Product details
Overview
AT49F002T-12TI from Atmel is a 5V-only, 2 Mbit (256K × 8) in-system reprogrammable Flash memory IC with 120 ns read access time, sector-based architecture (16K-byte boot block + two 8K-byte parameter blocks + two main memory blocks), and hardware data protection. It operates across industrial temperature range (−40°C to +85°C) and supports byte-by-byte programming (10 µs/byte typical) and chip/sector erase (10 s max).
For engineers reviewing the AT49F002T-12TI datasheet, AT49F002T-12TI pinout, AT49F002T-12TI application, or AT49F002T-12TI equivalent, key selection considerations include boot block lockout override via 12V RESET, DATA polling/toggle bit for program/erase status detection, and compatibility with standard microprocessor bus timing for CE/OE/WE control.
Technical Context
The AT49F002T-12TI implements a command-register-based architecture requiring six-byte sequences for chip erase and sector erase, with address latching on falling WE/CE edges and data latching on rising edges. Its boot block resides at 3C000H–3FFFFH and supports permanent lockout (enabled by 40H command) with 12V RESET override - a feature absent in AT49F002N(T) variants.
It uses internal program control and timer logic to manage erase/write cycles without external clocks, supports TTL/CMOS-compatible I/O levels (VIH = 2.0 V, VOH2 = 4.2 V @ VCC = 4.5 V), and incorporates hardware safeguards including VCC sense (<3.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and dual-line (CE/OE) output enable for bus contention avoidance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits |
| Read Access Time | 120 ns - determines maximum sustained read throughput in microprocessor bus interfaces |
| Byte Programming Time | 10 µs typical - enables rapid field updates of small firmware segments |
| Erase Cycle Time | 10 seconds max - defines minimum latency for full-chip or sector reinitialization |
| Operating Voltage | 5 V ±10% - single-supply operation eliminates need for charge pumps or auxiliary rails |
| Temperature Range | −40°C to +85°C - qualified for industrial embedded control and automotive body electronics |
| Standby Current | 300 µA max - supports low-power sleep modes in battery-backed systems |
Pinout & Package
AT49F002T-12TI is packaged in a 32-lead Plastic Thin Small Outline Package (TSOP, Type 1, 8 × 20 mm), pin-compatible with other AT49F002(N)(T) variants in TSOP/VSOP/PLCC/PDIP footprints. Pin 9 is a no-connect (NC) in TSOP configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing space |
| 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 tri-state buffer to prevent bus contention |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and programming |
| RESET | Reset Input | Active-low reset; 12V input enables boot block reprogramming even when lockout is active |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface for read data output and program data input |
| VCC | Power Supply | +5 V supply; internally regulated for programming voltage generation |
| GND | Ground | Reference return path for all digital and programming currents |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture with Boot Block Lockout | 16K-byte boot block (3C000H–3FFFFH) supports permanent write protection and 12V override for secure bootloader storage |
| Hardware Data Protection | VCC sense, noise filtering, and CE/OE/WE state monitoring prevent accidental writes during power transients or noise events |
| DATA Polling & Toggle Bit | I/O7 complement and I/O6 toggling provide real-time, software-visible status of program/erase completion without polling timers |
| Single 5V Supply Operation | Eliminates need for external 12V programming voltage - simplifies PCB design and reduces BOM count |
| Industrial Temperature Rating | Qualified from −40°C to +85°C - suitable for engine control units, industrial HMIs, and outdoor communications equipment |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module |
|---|---|
Use Scenario: Storing firmware and configuration data in programmable logic controllers deployed in factory automation environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage with in-system reprogrammability; 120 ns read access supports real-time scan cycle execution. Use Value: Boot block lockout ensures bootloader integrity while allowing field updates to application firmware without risk of corruption. | Use Scenario: Holding calibration tables and diagnostic routines in vehicle body control units exposed to under-hood thermal stress. IC Role / Device Role / Timing Role: Flash memory for EEPROM-like parameter storage; 300 µA standby current extends battery life during vehicle sleep mode. Use Value: 12V RESET override enables secure reprogramming of protected boot code during dealership-level firmware reflashes. |
| Medical Device Bootloader | Networking Equipment Configuration |
Use Scenario: Hosting certified bootloader code in Class II medical devices requiring regulatory-compliant firmware update mechanisms. IC Role / Device Role / Timing Role: Secure boot memory with hardware-enforced write protection; sector erase enables safe patch deployment. Use Value: Boot block lockout prevents unauthorized modification of FDA-cleared startup routines while permitting validated feature updates. | Use Scenario: Storing MAC addresses, serial numbers, and vendor-specific configuration in enterprise switches and routers. IC Role / Device Role / Timing Role: Parameter block storage (two 8K-byte sections) for persistent device identity and settings. Use Value: Independent sector erase allows updating network credentials without disturbing main firmware image stored in adjacent memory blocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF020-120-4C-NHE | 3.3V operation, 120 ns access, 2 Mbit density, no 12V RESET override | Lacks boot block lockout override; requires separate 3.3V rail and level-shifting for 5V systems | Select if system already uses 3.3V core logic and does not require 12V-protected reprogramming capability |
| MX29LV020TC-12G | 3.3V/5V tolerant, 120 ns access, 2 Mbit, supports CFI query but no 12V RESET pin | No hardware boot block override; relies on software lock mechanisms only | Choose for CFI-compliant toolchain integration where 12V override is unnecessary and voltage flexibility is prioritized |
Compared with SST39VF020-120-4C-NHE and MX29LV020TC-12G, the AT49F002T-12TI uniquely delivers 5V-only simplicity combined with hardware-enforced boot security and field-serviceable 12V override - critical for industrial and automotive applications requiring tamper-resistant firmware recovery paths.
Availability
AT49F002T-12TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive body control modules, medical device bootloaders, and networking equipment configuration requiring stable component supply and long-term lifecycle support.
Supply support for AT49F002T-12TI 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, nonvolatile memory, and secure authentication ICs.
The AT49F002T-12TI belongs to Atmel's legacy 5V Flash memory product line, designed specifically for industrial and automotive systems needing reliable, in-system reprogrammable code storage with hardware-level security features.
FAQ
What is the boot block address range for AT49F002T-12TI?
The boot block for AT49F002T-12TI occupies address range 3C000H to 3FFFFH (16K bytes). This differs from the base AT49F002(N) variant, which places the boot block at 00000H–03FFFH. The relocated boot block in AT49F002T-12TI allows main application code to reside in lower memory space while preserving secure startup routines at the top of the address map - a layout commonly used in x86-compatible BIOS and ARM boot ROM implementations.
Does AT49F002T-12TI support 12V programming voltage?
No, AT49F002T-12TI does not require or accept 12V for standard programming operations - it is strictly 5V-only. However, applying 12V ±0.5V to the RESET pin enables override of the boot block programming lockout feature, permitting erasure or reprogramming of the protected 16K-byte region. This 12V signal is used solely for security override and does not power internal programming circuits.
How is end-of-program detection implemented in AT49F002T-12TI?
AT49F002T-12TI provides two hardware-supported methods: DATA polling (I/O7 returns complement of loaded data until completion, then true data) and Toggle Bit (I/O6 toggles between 0 and 1 during active programming and stabilizes upon completion). Both mechanisms allow host firmware to detect program cycle finish without fixed delay loops - essential for deterministic real-time systems using AT49F002T-12TI in mission-critical applications.
What package type is used for AT49F002T-12TI?
AT49F002T-12TI is supplied in a 32-lead Plastic Thin Small Outline Package (TSOP, Type 1, 8 × 20 mm), designated as ordering suffix "T". Pin 9 is a no-connect (NC) in this TSOP configuration, consistent with AT49F002(N)(T) family specifications. The TSOP footprint supports high-density PCB layouts and automated surface-mount assembly.
Can AT49F002T-12TI be used in place of AT49F002-12TI?
No - AT49F002T-12TI and AT49F002-12TI are functionally distinct. AT49F002T-12TI features a top-aligned boot block (3C000H–3FFFFH) and supports 12V RESET override, whereas AT49F002-12TI has a bottom-aligned boot block (00000H–03FFFH) and lacks the 12V override capability. Substituting one for the other risks incorrect bootloader execution or inability to reprogram protected sectors.
AT49F002T-12TI 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:
- 2Mbit
- Memory Organization:
- 256K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 50µs
- Access Time:
- 120 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
AT49F002T-12TI FAQ
1.How can I place an order for AT49F002T-12TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F002T-12TI 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 AT49F002T-12TI reliable?
The price and inventory of AT49F002T-12TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F002T-12TI is usually 5 days.
3.What payment methods are accepted for AT49F002T-12TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F002T-12TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F002T-12TI?
AT49F002T-12TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F002T-12TI 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 AT49F002T-12TI?
For technical support, including AT49F002T-12TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F002T-12TI requirements.
6.How does Aetrix verify that AT49F002T-12TI is sourced from the original manufacturer or authorized distributors?
All AT49F002T-12TI 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 AT49F002T-12TI meets industry standards.
7.What is the process for return or replacement of AT49F002T-12TI?
All AT49F002T-12TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49F002T-12TI, 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 AT49F002T-12TI part is unused and in its original packaging.
Return procedure for AT49F002T-12TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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