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Microchip Technology AT49F002ANT-55TI
- Part No.:
- AT49F002ANT-55TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F002ANT-55TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,928
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Product details
Overview
AT49F002ANT-55TI from Atmel is a 2 Mbit (256K × 8) 5V-only in-system reprogrammable Flash memory with 55 ns read access time, 20 µs/byte programming, 4-second chip erase, and sector architecture including one 16K-byte boot block with programmable lockout-used for secure firmware storage in embedded microcontroller systems.
For engineers reviewing the AT49F002ANT-55TI datasheet, AT49F002ANT-55TI pinout, AT49F002ANT-55TI application, or AT49F002ANT-55TI equivalent, this page delivers verified electrical specs, TSOP-32 package mapping, boot-block protection behavior, DATA polling/toggle-bit status detection, and industrial-grade (-40°C to +85°C) operation under 5V ±10% supply.
Technical Context
The AT49F002ANT-55TI implements a command-based Flash architecture requiring no high-voltage programming inputs: all operations-including read, byte program, sector erase, chip erase, and boot lockout enable-are executed via 5V-only sequences written to specific address/data latches. Its sector layout comprises one 16K-byte boot block (address range 3C000H–3FFFFH), two 8K-byte parameter blocks, and four main memory blocks (32K + 3×64K bytes).
Hardware data protection includes VCC sense (<3.8V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line inhibition (OE low, CE high, or WE high blocks writes). Reset-driven boot override (12V on RESET) is explicitly excluded for the AT49F002ANT-55TI per datasheet Section 4.3 and Note 6.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits |
| Read Access Time | 55 ns - enables direct replacement of EPROMs in legacy 5V bus systems without timing redesign |
| Byte Programming Time | 20 µs typical - supports fast field updates of small code patches or configuration data |
| Chip Erase Time | 4 seconds max - allows full reprogramming within tight production test cycles |
| End-of-Program Detection | DATA polling (I/O7 complement) and toggle-bit (I/O6) - eliminates need for fixed delay timers in host firmware |
| Power Dissipation | 30 mA active / 100 µA CMOS standby - suitable for low-power embedded controllers with sleep/wake duty cycles |
| Write Endurance | 10,000 program/erase cycles - validated for firmware update logging and parameter storage in industrial controllers |
Pinout & Package
AT49F002ANT-55TI is supplied in a 32-lead Plastic Thin Small Outline Package (TSOP, Type I, 8 × 20 mm), compliant with JEDEC MO-142 BD. Pin 9 is No Connect (NC) per datasheet Section 2.2 and Note *.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A11 is "don't care" in command cycles |
| I/O0–I/O7 | Data Inputs/Outputs | Bi-directional 8-bit data bus; I/O7 used for DATA polling, I/O6 for toggle-bit status monitoring |
| CE | Chip Enable | Active-low chip select; must be low with OE low for read, high to enter standby (100 µA) |
| OE | Output Enable | Active-low output gate; controls data bus tristate to prevent contention during shared-bus operation |
| 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-no 12V override capability in AT49F002ANT-55TI |
| VCC | Power Supply | +5V ±10% supply; internal VCC sense disables programming if voltage drops below 3.8V |
| GND | Ground | Reference for all I/O and power pins; decoupling required per high-speed Flash timing |
| Pin 9 | No Connect | Unbonded terminal in TSOP package; must remain floating-no routing or pull-up/pull-down |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture with Boot Lockout | 16K-byte boot block (3C000H–3FFFFH) can be permanently write-protected via command sequence-ensures bootloader integrity during field firmware updates |
| 5V-Only Command Interface | No external high-voltage generator needed; all operations (read, program, erase, lockout) use standard 5V logic levels and microprocessor-compatible timing |
| Hardware Data Protection | VCC sense, noise filtering, and control-line inhibition prevent accidental writes-critical for unattended industrial systems |
| DATA Polling & Toggle Bit | Real-time end-of-program/erase detection using I/O7 complement or I/O6 toggling-enables deterministic host firmware without fixed delays |
| Green Packaging Option | Pb/Halide-free TSOP package meets RoHS Directive 2011/65/EU and JESD204B environmental compliance requirements |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded System Code Update |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in factory-floor environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Nonvolatile code storage with in-system reprogrammability; 55 ns read access ensures real-time scan cycle execution without bus wait states. Use Value: Boot block lockout prevents corruption of critical startup routines during remote firmware upgrades over Modbus or CANopen. | Use Scenario: Field upgrade of BIOS or boot code in aging industrial HMIs based on 8051 or Z80 microcontrollers with parallel address/data buses. IC Role / Device Role / Timing Role: Direct EPROM drop-in replacement; identical CE/OE/WE control interface and 5V-only operation eliminate adapter hardware. Use Value: 20 µs/byte programming enables rapid patch deployment without requiring full chip erase-reducing downtime during maintenance windows. |
| Secure Bootloader Memory | Parameter Configuration Storage |
Use Scenario: Holding immutable secure bootloader code in medical device controllers where regulatory validation requires firmware immutability after certification. IC Role / Device Role / Timing Role: Write-protected boot memory region; 16K-byte capacity accommodates cryptographic verification routines and key storage. Use Value: Hardware-enforced boot lockout (activated via documented 6-cycle command) provides tamper-resistant protection exceeding software-only methods. | Use Scenario: Storing calibration coefficients, sensor offsets, and user preferences in test equipment that undergoes periodic recalibration and field service. IC Role / Device Role / Timing Role: Parameter block storage (two 8K-byte sections); sector-erasable to preserve unrelated settings during partial updates. Use Value: Independent sector erase allows reprogramming of calibration data without disturbing application firmware in main 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 |
|---|---|---|---|
| AT49F002AN-55TI | Same density, speed, and TSOP package-but boot block address range is 00000H–03FFFH (not 3C000H–3FFFFH); RESET pin lacks 12V override | Used where legacy boot vector location at lowest address is required; not suitable for designs needing top-of-memory boot region | Select when system boot address mapping matches lower 16K-byte sector and no boot block relocation is needed. |
| AM29LV002BT-55REI | 2 Mbit, 55 ns, 32-pin TSOP-but uses AMD's command set (AA/55 unlock), different sector map (64K boot + 3×64K), and supports CFI query mode | Requires firmware adaptation for command sequences and sector addressing; broader industry support but non-drop-in replacement | Choose for new designs prioritizing long-term vendor availability and CFI-compliant toolchain integration over exact Atmel compatibility. |
Compared with AT49F002AN-55TI, the AT49F002ANT-55TI relocates the boot block to upper memory (3C000H–3FFFFH) for flexible vector placement, while AM29LV002BT-55REI offers CFI compliance and wider ecosystem support but demands full command-set revalidation.
Availability
AT49F002ANT-55TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy embedded system code updates, secure bootloader memory, and parameter configuration storage requiring stable component supply across extended product lifecycles.
Supply support for AT49F002ANT-55TI 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 AT49F002A(N)(T) family was designed as a 5V-only, in-system reprogrammable Flash memory solution targeting cost-sensitive embedded systems requiring reliable firmware storage with hardware-level write protection.
FAQ
What is the boot block address range for AT49F002ANT-55TI?
The AT49F002ANT-55TI has its 16K-byte boot block located at address range 3C000H to 3FFFFH, distinct from the lower-address boot block (00000H–03FFFH) used in non-T variants. This upper-memory placement supports systems requiring boot vectors at the top of the address space and avoids conflicts with application code in lower regions. The AT49F002ANT-55TI datasheet confirms this mapping in Section 4.6 and Note 3.
Does AT49F002ANT-55TI support 12V RESET override for boot block reprogramming?
No, AT49F002ANT-55TI does not support 12V RESET override for boot block reprogramming. Section 4.3 and Note 6 of the datasheet explicitly state that the RESET override feature is unavailable for AT49F002AN(T) variants-including AT49F002ANT-55TI. Once boot lockout is enabled, the boot block remains permanently protected under standard 5V operation. The AT49F002A(T) variant supports this override, but AT49F002ANT-55TI does not.
What package type and pin count does AT49F002ANT-55TI use?
AT49F002ANT-55TI uses a 32-lead Plastic Thin Small Outline Package (TSOP, Type I, 8 × 20 mm), designated as package code 32T per Section 27.1 of the datasheet. Pin 9 is a No Connect (NC), confirmed in Section 2.2 and footnote *. This TSOP package is surface-mount compatible and complies with JEDEC MO-142 BD mechanical standards.
How is end-of-program detected on AT49F002ANT-55TI?
AT49F002ANT-55TI supports two hardware-supported end-of-program detection methods: DATA polling (monitoring I/O7 for complement of programmed data) and toggle-bit detection (observing I/O6 toggling until completion). Both methods allow host firmware to avoid fixed timing delays and respond deterministically. These features are fully documented in Sections 4.8 and 4.9 of the AT49F002ANT-55TI datasheet.
What is the maximum erase cycle time for AT49F002ANT-55TI?
The maximum chip erase cycle time for AT49F002ANT-55TI is 8 seconds, with a typical value of 4 seconds as specified in Table 17 (tEC parameter). Sector erase times are not individually characterized but follow the same internal timing engine. This erase performance is guaranteed across the industrial temperature range (-40°C to +85°C) and applies only when VCC is stable within 5V ±10%.
AT49F002ANT-55TI 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:
- 55 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
AT49F002ANT-55TI FAQ
1.How can I place an order for AT49F002ANT-55TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F002ANT-55TI 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 AT49F002ANT-55TI reliable?
The price and inventory of AT49F002ANT-55TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F002ANT-55TI is usually 5 days.
3.What payment methods are accepted for AT49F002ANT-55TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F002ANT-55TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F002ANT-55TI?
AT49F002ANT-55TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F002ANT-55TI 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 AT49F002ANT-55TI?
For technical support, including AT49F002ANT-55TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F002ANT-55TI requirements.
6.How does Aetrix verify that AT49F002ANT-55TI is sourced from the original manufacturer or authorized distributors?
All AT49F002ANT-55TI 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 AT49F002ANT-55TI meets industry standards.
7.What is the process for return or replacement of AT49F002ANT-55TI?
All AT49F002ANT-55TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49F002ANT-55TI, 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 AT49F002ANT-55TI part is unused and in its original packaging.
Return procedure for AT49F002ANT-55TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F002ANT-55TI Tags
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