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Microchip Technology AT49F002N-12TI
- Part No.:
- AT49F002N-12TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F002N-12TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,527
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Product details
Overview
AT49F002N-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 AT49F002N-12TI datasheet, AT49F002N-12TI pinout, AT49F002N-12TI application, or AT49F002N-12TI equivalent, key selection criteria include boot-block lockout capability, 5V-only command interface, TSOP-32 package compatibility, DATA polling/Toggle Bit end-of-program detection, and industrial-grade reliability for embedded firmware storage.
Technical Context
The AT49F002N-12TI implements a standard parallel Flash architecture with CE/OE/WE control logic and internal command register sequencing. Its sector erase mechanism targets discrete 8K-byte parameter blocks and 96K/128K main memory blocks, enabling selective firmware updates without full chip reprogramming.
Boot block programming lockout is enforced via six-cycle command sequence (5555h/2AAAh/5555h/5555h/2AAAh/5555h with data AAh/55h/80h/AAh/55h/40h), permanently protecting the 16K-byte boot region (address 3C000h–3FFFFh) when enabled. RESET pin override at 12 V allows emergency reprogramming of locked boot sectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits - supports full firmware image storage for 8-bit microcontrollers. |
| Read Access Time | 120 ns - compatible with 8 MHz Z80, 68K, or 8051 bus timing without wait states. |
| Byte Programming Time | 10 µs typical - enables rapid field updates of configuration parameters or patch code. |
| Erase Cycle Time | 10 seconds maximum - allows predictable firmware update windows in production test or field service. |
| End-of-Program Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - eliminates need for fixed delay timers in host firmware. |
| Power Dissipation | 50 mA active current / 100 µA CMOS standby - suitable for low-power industrial controllers with sleep/wake cycles. |
| Write Endurance | 10,000 program/erase cycles - validated for firmware revision management over product lifetime. |
Pinout & Package
AT49F002N-12TI 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 devices. Pin 9 is a no-connect (NC) terminal per datasheet specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A17 selects upper/lower half of memory map. |
| I/O0–I/O7 | Data Inputs/Outputs | Bi-directional 8-bit data bus; supports byte-wide reads/writes and status polling on I/O6/I/O7. |
| 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 multi-device sharing. |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming. |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-impedance outputs; 12 V input overrides boot lockout. |
| GND / VCC | Power Supply | Single 5 V ±10% supply; no VPP or auxiliary voltage required for programming or erase. |
Key Features
| Feature | Design Value |
|---|---|
| 5V-only reprogramming | Eliminates need for 12 V programming supply or charge pumps - simplifies power design and PCB layout. |
| Boot block lockout | Hardware-enforced write protection for 16K-byte boot sector (3C000h–3FFFFh) prevents accidental corruption of startup code. |
| Sector architecture | Independent erasure of two 8K-byte parameter blocks enables safe storage of calibration data or user settings without affecting main firmware. |
| HARDWARE data protection | VCC sense (<3.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line interlock prevent spurious writes. |
| DATA polling & Toggle Bit | Real-time, bus-compatible status feedback replaces fixed-timing delays - improves host CPU efficiency and system responsiveness. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Protection |
|---|---|
Use Scenario: Storing firmware for programmable logic controllers requiring field-upgradable logic while maintaining certified boot integrity. IC Role / Device Role / Timing Role: Nonvolatile program memory with hardware-locked boot sector and sector-erase capability for modular firmware updates. Use Value: Enables certified firmware patches without revalidating entire boot image, reducing regulatory recertification burden and downtime. | Use Scenario: Securing boot code in Class II medical instruments where FDA 510(k) compliance mandates immutable startup routines. IC Role / Device Role / Timing Role: Trusted boot memory with permanent lockout of 16K-byte boot block (3C000h–3FFFFh) and 120 ns read access for deterministic initialization. Use Value: Meets IEC 62304 software safety requirements by preventing unauthorized modification of boot firmware during device operation. |
| Automotive ECU Parameter Calibration | Telecom Base Station Configuration |
Use Scenario: Storing vehicle-specific calibration tables in engine control units exposed to wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Industrial-temp (−40°C to +85°C) Flash memory with hardware noise filtering and 10,000-cycle endurance for repeated recalibration. Use Value: Ensures reliable parameter retention across automotive lifecycle while supporting dealer-level recalibration without full ECU replacement. | Use Scenario: Holding configuration profiles and protocol stacks in 4G/LTE base station remote radio units requiring zero-downtime updates. IC Role / Device Role / Timing Role: Dual-sector Flash enabling A/B firmware partitioning - one main memory block active while the other is erased/reprogrammed. Use Value: Supports hitless firmware upgrades by switching between mirrored 96K/128K main memory blocks, eliminating service interruption. |
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 | 4 Mbit density, 120 ns access, 3 V core with 5 V I/O tolerance; requires VPP = 12 V for programming. | Lacks boot block lockout; uses different command set and sector map (64K uniform sectors). | Select only if higher density and 3 V compatibility outweigh loss of hardware boot protection and 5 V simplicity. |
| SST39VF020-120-4C-NHE | 2 Mbit, 120 ns, 3.3 V operation; no 5 V support; includes automatic write inhibit during power ramp. | Does not support 5 V systems; lacks RESET-based boot override; uses different sector sizes (4K/32K). | Choose only for new 3.3 V designs where legacy 5 V compatibility is unnecessary and lower active power is critical. |
Compared with AM29LV002BT-120EC and SST39VF020-120-4C-NHE, the AT49F002N-12TI uniquely delivers 5 V-only operation with hardware-enforced boot block lockout and 12 V RESET override - essential for industrial firmware security and field-service flexibility.
Availability
AT49F002N-12TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code protection, and automotive ECU parameter calibration requiring stable component supply and long-term obsolescence management.
Supply support for AT49F002N-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, Flash memory, and secure authentication ICs.
The AT49F002N-12TI belongs to Atmel's parallel Flash memory product line, designed specifically for embedded systems requiring in-system reprogrammability, industrial temperature operation, and hardware-based data integrity protection.
FAQ
What is the memory organization of the AT49F002N-12TI?
The AT49F002N-12TI contains 2 Mbit (262,144 × 8) of Flash memory organized as 256K words × 8 bits. Its physical address space spans 00000h–3FFFFh (256K addresses), with sector layout including one 16K-byte boot block (3C000h–3FFFFh), two 8K-byte parameter blocks (3A000h–3BFFFh and 38000h–39FFFh), and two main memory blocks (20000h–37FFFh and 00000h–1FFFFh). This structure is confirmed in the device's block diagram and command definitions table.
Does the AT49F002N-12TI require high-voltage programming signals?
No, the AT49F002N-12TI operates exclusively at 5 V for both read and reprogramming functions. It does not require VPP = 12 V or any auxiliary programming voltage. All command sequences - including byte programming, sector erase, chip erase, and boot lockout enable - execute using standard 5 V logic levels on CE, OE, WE, and RESET pins, as specified in the "Single-voltage Operation" feature list and DC operating range table.
How is boot block protection implemented in the AT49F002N-12TI?
The AT49F002N-12TI implements boot block protection via a six-cycle command sequence (5555h/2AAAh/5555h/5555h/2AAAh/5555h with data AAh/55h/80h/AAh/55h/40h) that permanently disables programming and erasure of the 16K-byte boot sector (3C000h–3FFFFh) under 5.5 V. Once enabled, protection can only be overridden by applying 12 V ± 0.5 V to the RESET pin - a feature explicitly documented in the "Boot Block Programming Lockout Override" section.
What package type and pin count does the AT49F002N-12TI use?
The AT49F002N-12TI 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 9 is a no-connect (NC) terminal, consistent across all TSOP variants of the AT49F002(N)(T) family, as stated in the "AT49F002N Ordering Information" table on page 13 and confirmed in the TSOP top-view diagram.
Can the AT49F002N-12TI be used in systems requiring extended temperature operation?
Yes, the AT49F002N-12TI is rated for industrial temperature operation from −40°C to +85°C, as indicated by the "I" suffix in its ordering code (AT49F002N-12TI) and verified in the "AT49F002N Ordering Information" table (page 13). Its DC and AC characteristics - including 100 µA standby current and 120 ns read access - are fully specified across this range, making it suitable for harsh-environment applications like factory automation and outdoor telecom equipment.
AT49F002N-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
AT49F002N-12TI FAQ
1.How can I place an order for AT49F002N-12TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F002N-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 AT49F002N-12TI reliable?
The price and inventory of AT49F002N-12TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F002N-12TI is usually 5 days.
3.What payment methods are accepted for AT49F002N-12TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F002N-12TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F002N-12TI?
AT49F002N-12TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F002N-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 AT49F002N-12TI?
For technical support, including AT49F002N-12TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F002N-12TI requirements.
6.How does Aetrix verify that AT49F002N-12TI is sourced from the original manufacturer or authorized distributors?
All AT49F002N-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 AT49F002N-12TI meets industry standards.
7.What is the process for return or replacement of AT49F002N-12TI?
All AT49F002N-12TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49F002N-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 AT49F002N-12TI part is unused and in its original packaging.
Return procedure for AT49F002N-12TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F002N-12TI Tags
-
M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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