My Inquiry
My Account
Microchip Technology AT49F002NT-12TI
- Part No.:
- AT49F002NT-12TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F002NT-12TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,800
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49F002NT-12TI from Atmel is a 2-Mbit (256K × 8) 5V-only in-system reprogrammable Flash memory IC with 120 ns read access time, 10 µs/byte programming, 10-second chip erase, and sector architecture including a 16K-byte boot block with hardware lockout. It operates across -40°C to +85°C and supports embedded firmware storage in industrial microcontroller systems.
For engineers reviewing the AT49F002NT-12TI datasheet, AT49F002NT-12TI pinout, AT49F002NT-12TI application, or AT49F002NT-12TI equivalent, key selection criteria include boot-block protection capability, TSOP-32 industrial temperature rating, 5V-only command interface, DATA polling/Toggle Bit end-of-write detection, and compatibility with standard EPROM bus protocols (CE/OE/WE).
Technical Context
The AT49F002NT-12TI implements a software-command-based Flash architecture with six-byte command sequences for chip erase, sector erase, byte programming, and boot block lockout. Its internal control logic handles timing without external clocks, and RESET pin support enables boot block override at 12 V.
Memory organization comprises one 16K-byte boot block (address 3C000H–3FFFFH), two 8K-byte parameter blocks, and two main memory blocks (96K + 128K bytes). Hardware data protection includes VCC sense (<3.8 V inhibit), noise filtering (<15 ns pulse rejection), and CE/OE/WE state-dependent program inhibition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), enabling full firmware image storage for 8-bit microcontrollers |
| Read Access Time | 120 ns - meets timing requirements for 8 MHz Z80/8051 bus interfaces |
| Byte Programming Time | 10 µs typical - supports real-time field updates without system interruption |
| Chip Erase Time | 10 seconds - enables rapid firmware recovery during production programming |
| End-of-Write Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - eliminates need for fixed delay timers |
| Operating Voltage | 5 V ±10% - compatible with legacy 5V logic systems without level translation |
| Temperature Range | -40°C to +85°C - qualified for industrial control and automotive under-hood applications |
| Write Endurance | 10,000 cycles - sufficient for bootloader and configuration data update cycles over product lifetime |
Pinout & Package
AT49F002NT-12TI is supplied in a 32-lead Plastic Thin Small Outline Package (TSOP, Type 1, 8 × 20 mm), 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-word addressing; A17 used only for main memory block selection |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface compatible with 8051, Z80, and 68K microprocessor data buses |
| 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; enables high-impedance tri-state when high to prevent bus contention |
| WE | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per command sequence timing |
| RESET | Reset Input | Active-low reset; 12 V input enables boot block override - not available on N(T) variants |
| VCC / GND | Power Supply | 5 V supply with CMOS standby current <300 µA - critical for low-power sleep modes |
| DC | No Connect | Pin 9 in TSOP package is unconnected; must be left floating or tied to ground per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Lockout | 16K-byte protected region (3C000H–3FFFFH) prevents accidental overwrite of bootloader code via software command or 5.5 V max voltage |
| Sector Architecture | Independent erasure of parameter blocks (8K each) and main memory blocks enables modular firmware updates without full chip erase |
| Hardware Data Protection | VCC sense, noise filtering, and multi-signal inhibit (CE/OE/WE states) eliminate spurious writes during power transients or EMI events |
| 5V-Only Command Interface | No external high-voltage programming supply required - simplifies PCB design and reduces BOM cost |
| DATA Polling & Toggle Bit | Real-time status feedback on I/O7 and I/O6 allows deterministic write completion detection without fixed delays or external timers |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in factory environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Nonvolatile program memory providing 120 ns read access for real-time scan cycle execution and 10 µs byte programming for field firmware patches. Use Value: Boot block lockout ensures bootloader integrity during remote updates; sector erase allows parameter block reconfiguration without disrupting main application code. | Use Scenario: Holding configuration data and calibration tables in body control units exposed to automotive under-hood temperatures (-40°C to +85°C). IC Role / Device Role / Timing Role: Parameter storage device with dual 8K-byte parameter blocks mapped to vehicle-specific settings and sensor calibration offsets. Use Value: Hardware data protection prevents corruption during load dump events; 10,000 write cycles exceed OEM lifetime requirements for reprogramming. |
| Medical Diagnostic Equipment Bootloader | Point-of-Sale Terminal BIOS |
Use Scenario: Securing certified bootloader code in FDA-regulated diagnostic imaging devices where firmware integrity is safety-critical. IC Role / Device Role / Timing Role: Protected boot memory with 12 V RESET override enabling authorized service-mode reprogramming while blocking unauthorized access. Use Value: Boot block lockout activated via 6-byte command sequence ensures immutable bootloader; TSOP-32 package supports compact, high-density PCB layouts. | Use Scenario: Storing BIOS and payment stack firmware in retail terminals requiring secure, field-upgradable code storage. IC Role / Device Role / Timing Role: In-system reprogrammable Flash memory interfacing directly with x86-compatible southbridge chipsets using standard CE/OE/WE protocol. Use Value: 5V-only operation avoids level-shifter components; DATA polling enables reliable firmware update verification in noisy retail EMV environments. |
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 core with 5V I/O; 120 ns access; no RESET pin; boot block at top address (00000H) | Requires 3.3V supply rail; lacks 12 V boot override; different boot block location affects linker script mapping | Select if migrating to lower-power 3.3V system; verify address remapping and voltage translation for CE/OE/WE lines |
| MX29LV002CTTI-12 | 3V/5V tolerant; 120 ns access; boot block at bottom (00000H); no RESET pin; Toggle Bit only (no DATA polling) | Compatible with mixed-voltage designs; boot block position differs; missing DATA polling limits debug visibility | Prefer for cost-sensitive industrial designs where 3V compatibility is needed and boot block location aligns with existing firmware layout |
Compared with AM29LV002BT-120EC and MX29LV002CTTI-12, the AT49F002NT-12TI uniquely provides 5V-only operation with RESET-enabled boot block override, making it suitable for legacy 5V systems requiring field-serviceable bootloader updates without hardware modification.
Availability
AT49F002NT-12TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive body control module configuration, medical diagnostic equipment bootloaders, and point-of-sale terminal BIOS requiring stable component supply across extended temperature ranges.
Supply support for AT49F002NT-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 for industrial and embedded applications.
The AT49F002NT-12TI belongs to Atmel's 5V Flash memory product line, designed specifically for in-system reprogrammability in legacy 5V microcontroller platforms requiring robust boot code protection and deterministic write-cycle feedback.
FAQ
What is the boot block address range for AT49F002NT-12TI?
The boot block for AT49F002NT-12TI occupies addresses 3C000H to 3FFFFH (16K bytes), distinct from the AT49F002N variant's 00000H–03FFFH range. This top-address placement isolates bootloader code from main application memory, reducing risk of accidental overwrite during firmware updates. The AT49F002NT-12TI datasheet confirms this mapping in the Block Diagram and Command Definitions sections.
Does AT49F002NT-12TI support 12 V programming for the boot block?
Yes, AT49F002NT-12TI supports 12 V ±0.5 V applied to the RESET pin to override boot block lockout, enabling reprogramming even after lockout activation. This feature is explicitly documented in the "Boot Block Programming Lockout Override" section and is unavailable on AT49F002N(T) variants. The AT49F002NT-12TI datasheet specifies VH = 12.0 V ± 0.5 V for this function.
What package type is used for AT49F002NT-12TI?
AT49F002NT-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 "Don't Connect" (DC) terminal, and the package complies with JEDEC standard MO-118. This TSOP footprint is compatible with automated SMT assembly lines and high-density PCB layouts.
How does AT49F002NT-12TI detect end-of-program without external timing?
AT49F002NT-12TI 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 programming, then stabilizes). Both are specified in the "Data Polling Waveforms" and "Toggle Bit Waveforms" sections of the AT49F002NT-12TI datasheet and require no external clock or timer resources.
Is AT49F002NT-12TI compatible with standard EPROM read protocols?
Yes, AT49F002NT-12TI is fully compatible with EPROM read protocols: when CE and OE are low and WE is high, data appears on I/O0–I/O7 within 120 ns. Its dual-line CE/OE control prevents bus contention, and the device enters high-impedance state when either CE or OE is high - identical behavior to industry-standard EPROMs, simplifying drop-in replacement in legacy designs.
AT49F002NT-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
AT49F002NT-12TI FAQ
1.How can I place an order for AT49F002NT-12TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F002NT-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 AT49F002NT-12TI reliable?
The price and inventory of AT49F002NT-12TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F002NT-12TI is usually 5 days.
3.What payment methods are accepted for AT49F002NT-12TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F002NT-12TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F002NT-12TI?
AT49F002NT-12TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F002NT-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 AT49F002NT-12TI?
For technical support, including AT49F002NT-12TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F002NT-12TI requirements.
6.How does Aetrix verify that AT49F002NT-12TI is sourced from the original manufacturer or authorized distributors?
All AT49F002NT-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 AT49F002NT-12TI meets industry standards.
7.What is the process for return or replacement of AT49F002NT-12TI?
All AT49F002NT-12TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49F002NT-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 AT49F002NT-12TI part is unused and in its original packaging.
Return procedure for AT49F002NT-12TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F002NT-12TI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
