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Microchip Technology AT49BV002AT-70TI
- Part No.:
- AT49BV002AT-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV002AT-70TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,060
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Product details
Overview
AT49BV002AT-70TI from Atmel is a 2 Mbit (256K × 8) single-supply Flash memory IC operating at 2.7–3.6 V, featuring 70 ns read access time, 4-second chip erase, 30 µs/byte programming, and hardware data protection. It serves as nonvolatile program/data storage in embedded boot code applications requiring in-system reprogrammability without high-voltage programming.
For engineers reviewing the AT49BV002AT-70TI datasheet, AT49BV002AT-70TI pinout, AT49BV002AT-70TI application, or AT49BV002AT-70TI equivalent, key selection criteria include boot block lockout behavior (3C000H–3FFFFH address range), TSOP-32 package compatibility, industrial temperature support (−40°C to +85°C), and DATA polling/Toggle Bit end-of-operation detection.
Technical Context
The AT49BV002AT-70TI implements a sector-erasable Flash architecture with one 16K-byte boot block (3C000H–3FFFFH), two 8K-byte parameter blocks, and four main memory blocks (32K + 3×64K). Its command-set-driven operation uses standard microprocessor timing with CE/OE/WE control and supports hardware reset override (12 V on RESET) for boot block reprogramming.
It integrates internal program control logic, automatic erase timing, and dual end-of-operation detection (DATA polling on I/O7 and Toggle Bit on I/O6). The device operates in read, byte-program, sector-erase, chip-erase, and product identification modes-all initiated via six-byte command sequences written to specific address/data locations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits - supports full firmware image storage for 8-bit microcontrollers. |
| Read Access Time | 70 ns - enables direct execution from flash (XIP) in systems with ≤14 MHz bus clocks. |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic rails and battery-backed operation without level-shifting. |
| Erase Cycle Time | 4 seconds typical - allows rapid field updates of parameter or application sections without system downtime. |
| Byte Programming Time | 30 µs typical - supports real-time configuration writes during runtime without blocking critical tasks. |
| End-of-Operation Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - eliminates need for fixed delay timers in host firmware. |
| Write Endurance | 10,000 program/erase cycles - sufficient for firmware update cycles over 10+ years in industrial control applications. |
| Standby Current | 50 µA CMOS - enables ultra-low-power retention in always-on embedded systems. |
Pinout & Package
AT49BV002AT-70TI is packaged in a 32-lead Thin Small Outline Package (TSOP, Type I, 8 × 20 mm, package code 32T), compliant with JEDEC MO-142 BD. Pin 1 is marked by a beveled corner; pin 9 is NC (no connect) per datasheet Rev. 3353D.
| 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 | Bidirectional Data Bus | 8-bit parallel interface; carries command data, product ID codes, and memory contents; supports DATA polling on I/O7 and Toggle Bit on I/O6. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for read access; used with WE in command sequencing. |
| OE | Output Enable | Active-low output control; places I/O pins in high-impedance state when high; required high during programming/erase. |
| WE | Write Enable | Active-low write strobe; latches address/data during command entry and byte programming; controls timing of bus cycles. |
| RESET* | Reset Input | Active-low reset; halts ongoing operations and forces high-Z outputs; 12 V applied here overrides boot block lockout (not available on AN variant). |
| VCC | Power Supply | 2.7–3.6 V supply; internal voltage sensing inhibits programming if VCC < 1.8 V (typical). |
| GND | Ground | Reference for all signals and power; decoupling capacitor placement near this pin is critical for noise immunity during erase. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Lockout | 16K-byte protected region (3C000H–3FFFFH) prevents accidental overwrite of boot code; enabled via 6-byte command sequence; override possible with 12 V on RESET. |
| Sector-Erasable Architecture | Independent erasure of two 8K-byte parameter blocks and four main memory blocks (32K + 3×64K) enables granular firmware updates without full chip erase. |
| Hardware Data Protection | VCC sense, noise filtering (15 ns pulse rejection), and control-line inhibition (OE low / CE high / WE high) prevent spurious writes during power transients or EMI events. |
| Standard EPROM-Compatible Interface | Uses CE/OE/WE control lines with no external high-voltage generators - simplifies integration into legacy 8-bit microcontroller buses. |
| Product Identification Mode | Software/hardware entry yields Manufacturer Code (1FH) and Device Code (08H), enabling automated programmer recognition and algorithm selection. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
|
Use Scenario: Storing boot loader and field-upgradable application firmware in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile program memory providing XIP-capable instruction storage with 70 ns access and sector-level update capability. Use Value: Enables secure in-field firmware patches via sector erase without disrupting operational logic; boot block lockout ensures bootloader integrity across 10,000+ update cycles. |
Use Scenario: Holding calibrated sensor parameters, user preferences, and regulatory-compliant device settings in portable diagnostic equipment. IC Role / Device Role / Timing Role: Parameter storage with hardware write protection and low-power standby (50 µA) for battery-operated devices. Use Value: Guarantees data retention during battery swaps; DATA polling allows deterministic timing for calibration save routines without fixed delays. |
| Automotive Body Control Module Boot Code | Networking Equipment Boot Image Storage |
|
Use Scenario: Hosting immutable boot code and updatable application partitions in automotive BCMs subject to AEC-Q100 stress requirements. IC Role / Device Role / Timing Role: Secure boot memory with 12 V RESET override for recovery-mode reprogramming after failed updates. Use Value: Prevents bricking during OTA updates; industrial temp range (−40°C to +85°C) and 4-second erase support rapid diagnostics and repair workflows. |
Use Scenario: Storing primary boot image and fail-safe recovery firmware in enterprise switches and routers requiring high reliability. IC Role / Device Role / Timing Role: Dual-block firmware repository where boot block (3C000H–3FFFFH) holds verified startup code and main blocks hold active/fallback images. Use Value: Sector erase isolates recovery image updates from active firmware; Toggle Bit detection ensures robust host controller synchronization during flash operations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF200A-70-4C-NHE | 2 Mbit, 70 ns, 3.0–3.6 V; no RESET pin; boot block at 00000H–03FFFH (low-address); lacks 12 V override. | Requires PCB redesign for RESET pin removal and address mapping shift; suitable only where boot block location flexibility is acceptable. | Select when RESET pin is unused and low-address boot region aligns with existing firmware layout. |
| MX29LV200CTTI-70G | 2 Mbit, 70 ns, 3.0–3.6 V; boot block at 3C000H–3FFFFH (same address); includes CFI query support; no 12 V RESET override. | CFI compatibility simplifies universal programmer integration but requires host-side CFI parser; identical boot block placement eases migration. | Select when CFI-based toolchain support is prioritized and 12 V override is not required for field recovery. |
Compared with SST39VF200A-70-4C-NHE and MX29LV200CTTI-70G, the AT49BV002AT-70TI uniquely provides 12 V RESET-based boot block override - a critical differentiator for remote-recovery scenarios - while maintaining identical TSOP-32 packaging and industrial temperature compliance.
Availability
AT49BV002AT-70TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, automotive body control module boot code, and networking equipment boot image storage requiring stable component supply and long-term lifecycle assurance.
Supply support for AT49BV002AT-70TI 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 security ICs, known for robust Flash and EEPROM technologies.
The AT49BV002AT-70TI belongs to Atmel's Battery-Voltage™ Flash memory family, designed specifically for single-supply, in-system reprogrammable embedded storage where low-voltage operation and boot code integrity are critical.
FAQ
What is the boot block address range for AT49BV002AT-70TI?
The AT49BV002AT-70TI features a 16K-byte boot block located at address range 3C000H to 3FFFFH. This differs from the base AT49BV002A(N) variant (00000H–03FFFH) and is explicitly confirmed in the datasheet Rev. 3353D section "BOOT BLOCK PROGRAMMING LOCKOUT" and Command Definition table notes. The AT49BV002AT-70TI uses this high-address boot sector to isolate startup code from main application updates.
Does AT49BV002AT-70TI support 12 V programming override?
Yes, AT49BV002AT-70TI supports 12 V ± 0.5 V applied to the RESET pin to override the boot block programming lockout during chip erase, sector erase, or byte programming. This feature is explicitly documented in the "BOOT BLOCK PROGRAMMING LOCKOUT OVERRIDE" section and is unavailable on the AT49BV002AN(T) variant. The RESET pin must remain at 12 V throughout the entire operation.
What package type is used for AT49BV002AT-70TI?
AT49BV002AT-70TI uses a 32-lead Thin Small Outline Package (TSOP, Type I), designated as package code 32T, with dimensions 8 mm × 20 mm. Datasheet Rev. 3353D confirms this in the "Ordering Information" table and "Packaging Information" section (drawing 32T), noting pin 9 is NC and pin 1 is marked by a beveled corner.
How does AT49BV002AT-70TI detect end-of-program operation?
AT49BV002AT-70TI 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 operation, stops toggling upon completion). Both are specified in the "DATA POLLING" and "TOGGLE BIT" sections of Rev. 3353D and require no external timing components.
What is the maximum erase cycle time for AT49BV002AT-70TI?
The maximum erase cycle time for AT49BV002AT-70TI is 8 seconds, with a typical value of 4 seconds. This applies to both chip erase and sector erase operations and is specified in the "Program Cycle Characteristics" table under parameter tEC. The device internally controls timing, requiring no external clocks or host intervention during the erase period.
AT49BV002AT-70TI 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:
- 70 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT49BV002AT-70TI FAQ
1.How can I place an order for AT49BV002AT-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002AT-70TI 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 AT49BV002AT-70TI reliable?
The price and inventory of AT49BV002AT-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002AT-70TI is usually 5 days.
3.What payment methods are accepted for AT49BV002AT-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002AT-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002AT-70TI?
AT49BV002AT-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002AT-70TI 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 AT49BV002AT-70TI?
For technical support, including AT49BV002AT-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002AT-70TI requirements.
6.How does Aetrix verify that AT49BV002AT-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV002AT-70TI 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 AT49BV002AT-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV002AT-70TI?
All AT49BV002AT-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002AT-70TI, 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 AT49BV002AT-70TI part is unused and in its original packaging.
Return procedure for AT49BV002AT-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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