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Microchip Technology AT49F002N-12TC
- Part No.:
- AT49F002N-12TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F002N-12TC.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,100
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Product details
Overview
AT49F002N-12TC from Atmel is a 5V-only, 2 Mbit (256K × 8) in-system reprogrammable Flash memory IC used for nonvolatile code/data storage in embedded controllers and boot firmware applications. It delivers 55 ns read access time, 10 µs/byte typical programming, 10-second chip erase, hardware data protection, and sector-based architecture with 16K-byte boot block lockout.
For engineers reviewing the AT49F002N-12TC datasheet, AT49F002N-12TC pinout, AT49F002N-12TC application, or AT49F002N-12TC equivalent, key selection considerations include its TSOP-32 package, industrial temperature range (−40°C to +85°C), 5V single-supply operation, boot-sector write protection, and compatibility with standard microprocessor bus timing.
Technical Context
The AT49F002N-12TC implements a command-register-based architecture requiring six-byte software sequences for chip/sector erase and boot lockout enable. Its internal program control logic eliminates external high-voltage programming signals, enabling true 5V-only in-system reprogramming.
Memory organization comprises one 16K-byte boot block (00000H–03FFFH), two 8K-byte parameter blocks, and two main memory blocks (96K + 128K bytes). Sector erase supports independent reprogramming of parameter blocks while preserving boot code integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), directly maps to 256KB address space for firmware image storage |
| Read Access Time | 120 ns max - defines maximum wait-state requirement for 8-bit microcontroller interfaces |
| Byte Programming Time | 10 µs typical - enables rapid field updates of small configuration or calibration data |
| Erase Cycle Time | 10 seconds max - determines minimum downtime during firmware upgrade sequences |
| Endurance | 10,000 program/erase cycles - specifies lifetime for frequently updated parameter sectors |
| Supply Current | 50 mA active / 100 µA CMOS standby - supports low-power sleep modes in battery-backed systems |
| Operating Voltage | 5.0 V ±10% - compatible with legacy 5V logic families without level-shifting |
Pinout & Package
AT49F002N-12TC uses a 32-lead Plastic Thin Small Outline Package (TSOP, 8 × 20 mm, Type 1), pin-compatible with industry-standard 32-pin Flash memory footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-byte addressing (A0–A17 = 00000H–3FFFFH) |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface compatible with 8051, Z80, and 68K family microcontrollers |
| CE | Chip Enable | Active-low chip select; enables device on shared bus when asserted with OE |
| OE | Output Enable | Active-low output control; prevents bus contention during read operations |
| WE | Write Enable | Active-low write strobe; latches address/data for command sequences and byte programming |
| RESET | Reset Input | Active-low reset; forces outputs to high-Z and halts ongoing operations - not connected on AT49F002N(T) variants |
| GND / VCC | Power Pins | Single 5V supply with dedicated ground; no separate I/O or core voltage rails |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V Supply Operation | Eliminates need for 12V programming voltage or charge pumps - simplifies power design and PCB layout |
| Boot Block Programming Lockout | 16K-byte protected region (00000H–03FFFH) prevents accidental overwrite of critical boot code during field updates |
| Data Polling & Toggle Bit | Hardware status feedback (I/O7 complement / I/O6 toggle) enables polling-based programming without timers or interrupts |
| Sector Erase Architecture | Independent erasure of parameter blocks (8K each) allows selective firmware updates without full chip erase |
| Hardware Data Protection | VCC sense (<3.8V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line interlock prevent spurious writes |
Applications
| Embedded Boot Memory | Firmware Configuration Storage |
|---|---|
Use Scenario: Storing boot loader and initialization code for 8-bit microcontrollers in industrial PLCs. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped at reset vector address 00000H, accessed via standard CE/OE/WE bus protocol. Use Value: Boot block lockout ensures factory-loaded firmware remains intact across 10,000+ field updates to application code in main memory blocks. | Use Scenario: Holding calibration tables and user-configurable parameters in medical diagnostic equipment. IC Role / Device Role / Timing Role: Parameter block (8K × 2) provides dedicated, independently erasable storage for runtime-modifiable settings. Use Value: Sector erase capability enables safe overwriting of configuration data without disturbing boot code or application firmware. |
| Legacy System Code Replacement | Industrial Control Firmware Update |
Use Scenario: Replacing obsolete EPROMs (e.g., 27C256) in aging telecom line cards with in-system reprogrammable Flash. IC Role / Device Role / Timing Role: Pin- and timing-compatible drop-in replacement using identical 32-pin DIP/TSOP footprint and 5V interface. Use Value: 55 ns read access meets original EPROM timing specs; 5V-only operation avoids redesign of existing 5V-only power rails. | Use Scenario: Field-upgradable firmware for programmable logic controllers deployed in remote substations. IC Role / Device Role / Timing Role: Main memory block (96K + 128K) stores full application firmware images; RESET pin enables safe abort of failed updates. Use Value: Industrial temperature rating (−40°C to +85°C) and 10,000-cycle endurance support 15+ year deployment with periodic firmware patches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV002BT-120EC | 3V/5V dual-voltage operation; 120 ns access; different command set (AMD-style); no boot block lockout | Requires voltage translation in pure 5V systems; lacks hardware-protected boot sector | Select if migrating to lower-voltage systems or needing AMD-compatible toolchain support |
| MX29LV002CTTI-12 | 5V-only; 120 ns access; Macronix command set; boot block size differs (8K vs 16K); no RESET pin | Smaller protected boot region; lacks RESET-driven lockout override capability | Select for cost-sensitive designs where 16K boot protection and 12V override are not required |
Compared with AM29LV002BT-120EC and MX29LV002CTTI-12, the AT49F002N-12TC uniquely provides 16K-byte hardware-locked boot memory with 12V RESET override, making it optimal for safety-critical boot firmware where code integrity must be guaranteed across decades of field updates.
Availability
AT49F002N-12TC is available at Aetrix Electronics and suitable for industrial control systems, legacy system upgrades, medical device firmware storage, and embedded boot memory applications requiring stable component supply and long-term lifecycle support.
Supply support for AT49F002N-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 devices.
The AT49F002N-12TC belongs to Atmel's 5V Flash memory product line, designed specifically for reliable, in-system reprogrammable code storage in industrial and automotive-adjacent embedded systems with strict 5V bus compatibility requirements.
FAQ
What is the memory organization of the AT49F002N-12TC?
The AT49F002N-12TC contains 2 Mbit (256K × 8) of Flash memory organized into one 16K-byte boot block (00000H–03FFFH), two 8K-byte parameter blocks, and two main memory blocks (96K and 128K bytes). This sector architecture enables selective erasure and programming, and the boot block supports hardware lockout to protect critical startup code - a defining feature of the AT49F002N-12TC.
Does the AT49F002N-12TC require high-voltage programming?
No, the AT49F002N-12TC operates exclusively at 5V for both read and programming functions. It uses internal command registers and timing circuits to generate required programming pulses - eliminating external 12V supplies or charge pumps. This 5V-only operation is confirmed in the device's "Single-voltage Operation" feature list and is a core specification of the AT49F002N-12TC.
What is the purpose of the RESET pin on the AT49F002N-12TC?
The RESET pin on the AT49F002N-12TC is an active-low input that forces outputs into high-impedance state and halts ongoing program/erase operations. Critically, applying 12V ±0.5V to RESET overrides the boot block lockout - allowing reprogramming of protected boot code. This functionality is explicitly documented for the AT49F002N-12TC and distinguishes it from AT49F002N(T) variants where RESET is not available.
How does the AT49F002N-12TC indicate completion of a programming cycle?
The AT49F002N-12TC provides two hardware methods: DATA polling (I/O7 returns complement of written data until completion, then true data) and Toggle Bit (I/O6 toggles between 0/1 during operation, stops when complete). Both mechanisms allow firmware to detect programming end without fixed delays - a verified behavior specified in the AT49F002N-12TC AC characteristics table and waveforms.
Is the AT49F002N-12TC pin-compatible with standard 32-pin Flash memory packages?
Yes, the AT49F002N-12TC uses a 32-lead TSOP (Type 1, 8 × 20 mm) package with industry-standard pinout: A0–A17, I/O0–I/O7, CE, OE, WE, GND, VCC, and RESET. Its pin configuration matches JEDEC-standard 32-pin Flash footprints, enabling direct replacement of similar-density 5V Flash devices - a key interoperability feature confirmed in the AT49F002N-12TC pin diagrams and ordering information.
AT49F002N-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:
- 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT49F002N-12TC FAQ
1.How can I place an order for AT49F002N-12TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F002N-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 AT49F002N-12TC reliable?
The price and inventory of AT49F002N-12TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F002N-12TC is usually 5 days.
3.What payment methods are accepted for AT49F002N-12TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F002N-12TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F002N-12TC?
AT49F002N-12TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F002N-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 AT49F002N-12TC?
For technical support, including AT49F002N-12TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F002N-12TC requirements.
6.How does Aetrix verify that AT49F002N-12TC is sourced from the original manufacturer or authorized distributors?
All AT49F002N-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 AT49F002N-12TC meets industry standards.
7.What is the process for return or replacement of AT49F002N-12TC?
All AT49F002N-12TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49F002N-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 AT49F002N-12TC part is unused and in its original packaging.
Return procedure for AT49F002N-12TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F002N-12TC Tags
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