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Microchip Technology AT49BV802A-70TI-T
- Part No.:
- AT49BV802A-70TI-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV802A-70TI-T.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,098
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Product details
Overview
AT49BV802A-70TI-T from Microchip Technology (formerly Atmel) is an 8-Mbit (524,288 × 16 / 1,048,576 × 8) single-supply Flash memory IC with 70 ns access time, sector erase architecture (15 × 64 KB + 8 × 8 KB), and suspend/resume capability for in-system programming. It operates from 2.65V to 3.6V and supports both byte and word data interfaces via the BYTE pin.
For engineers reviewing the AT49BV802A-70TI-T datasheet, AT49BV802A-70TI-T pinout, AT49BV802A-70TI-T application, or AT49BV802A-70TI-T equivalent, key selection considerations include its TSOP-48 package, 100,000 erase cycles, Common Flash Interface (CFI) support, sector lockdown security, and dual-mode (x8/x16) I/O configuration.
Technical Context
The AT49BV802A-70TI-T implements a command-based Flash architecture with embedded state machine control for program/erase operations. Its 23-sector layout includes fifteen 64 KB (32K-word) and eight 8 KB (4K-word) sectors, each individually lockable. Sector erase and chip erase are initiated via six-byte software command sequences.
It features three real-time operation status detection methods: READY/BUSY open-drain output, Data Polling on I/O7, and Toggle Bit on I/O6 - all configurable via a programmable status register. The device also integrates a 128-bit protection register (factory-block A + user-programmable block B) and hardware data protection including VCC sense and power-on delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (524,288 words × 16 or 1,048,576 bytes × 8) |
| Access Time | 70 ns - defines maximum read latency under worst-case VCC and temperature conditions |
| Supply Voltage | 2.65V–3.6V - enables direct interface with 3.3V logic systems without level shifting |
| Program Time | 12 µs per byte/word - determines minimum write cycle duration for firmware updates |
| Erase Time | 300 ms per sector - sets worst-case delay for field-upgradable code partitioning |
| Erase Cycles | ≥100,000 per sector - guarantees long-term reliability in reprogrammable boot storage |
| Standby Current | 13 µA - enables ultra-low-power retention in battery-backed embedded systems |
Pinout & Package
AT49BV802A-70TI-T is packaged in a 48-lead TSOP Type I (Thin Small Outline Package) with 0.5 mm pitch, compliant with JEDEC MO-141BA. Pin 1 is marked by a notch or dot; pin numbering proceeds counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 8-Mbit addressing (A-1 used as LSB in byte mode) |
| I/O0–I/O14 | Data I/O (bidirectional) | Primary data path; I/O15 serves dual role as data (x16) or A-1 (x8) |
| I/O15 / A-1 | Mode-Dependent Terminal | In word mode: data bit 15; in byte mode: least-significant address bit for x8 addressing |
| BYTE | Interface Configuration | Logic high = x16 mode (I/O0–I/O15 active); logic low = x8 mode (I/O0–I/O7 active, I/O8–I/O14 tri-stated) |
| CE, OE, WE | Control Enables | Three independent enables prevent bus contention; CE+OE low + WE high = read mode |
| RDY/BUSY | Open-Drain Status Output | Active-low during internal program/erase; supports wired-OR of multiple devices |
| RESET | Hardware Initialization | Pulling low halts ongoing operation and forces high-impedance outputs; returns to read/standby on release |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Architecture | 23 independently erasable sectors (15 × 64 KB + 8 × 8 KB) enable granular firmware partitioning and field updates without full chip erase |
| Erase/Program Suspend | Allows interruption of erase or program to read/program other sectors - critical for real-time embedded systems requiring concurrent access |
| Sector Lockdown | Software-enabled per-sector write protection prevents accidental overwrite of boot code or calibration data |
| Common Flash Interface (CFI) | Standardized query table at fixed addresses enables automatic driver configuration and multi-vendor flash compatibility |
| 128-bit Protection Register | Factory-programmed 64-bit ID + user-lockable 64-bit block supports secure system authentication and anti-cloning |
Applications
| Industrial HMI Boot Storage | Medical Device Firmware Partitioning |
|---|---|
Use Scenario: Storing bootloader and GUI assets in a panel-mounted human-machine interface with periodic firmware updates over CAN bus. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast 70 ns read access for UI responsiveness and sector-locked boot region preventing corruption during update. Use Value: Enables safe in-field upgrades while preserving certified boot integrity via hardware-enforced sector lockdown. | Use Scenario: Holding calibrated sensor algorithms and regulatory-compliant firmware in portable diagnostic equipment with battery backup. IC Role / Device Role / Timing Role: Low-power (13 µA standby) Flash memory supporting secure, sector-isolated updates under strict IEC 62304 requirements. Use Value: 100,000 erase cycles and CFI compliance simplify FDA audit documentation and reduce qualification effort across product variants. |
| Automotive Telematics Module | Networking Edge Router Boot Image |
Use Scenario: Hosting OTA-updatable telematics stack and vehicle-specific configuration tables in AEC-Q100-qualified gateway modules. IC Role / Device Role / Timing Role: Dual-mode (x8/x16) interface adapts to host MCU bus width; suspend/resume allows background diagnostics during firmware download. Use Value: TSOP-48 package meets automotive thermal cycling requirements; 2.65–3.6V operation tolerates wide battery voltage swings. | Use Scenario: Storing primary and fallback boot images in carrier-grade edge routers requiring zero-downtime failover. IC Role / Device Role / Timing Role: Sector-locked primary image + unprotected secondary partition enables atomic A/B firmware swaps with hardware-level rollback safety. Use Value: RDY/BUSY pin and Data Polling provide deterministic timing for bootloader handoff - eliminating race conditions during cold start. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF800A-70-4C-NHE | Same density (8 Mbit), 70 ns access, but uses different command set and lacks CFI support | No built-in sector lockdown or 128-bit protection register; requires external security layer for secure boot | Preferred where legacy SST-compatible toolchains exist and advanced security is not required |
| MX29LV800CTTI-70G | Pin-compatible TSOP-48, 70 ns, but requires 3.0V ± 0.3V supply (narrower than AT49BV802A-70TI-T's 2.65–3.6V range) | Supports top/bottom boot block configuration like AT49BV802A-70TI-T, but no erase suspend/resume feature | Selected when board layout reuse is critical and suspend functionality is unnecessary |
Compared with SST39VF800A-70-4C-NHE and MX29LV800CTTI-70G, the AT49BV802A-70TI-T uniquely combines wide-voltage operation, hardware sector lockdown, and suspend/resume - making it optimal for safety-critical or resource-constrained embedded systems requiring concurrent access and secure boot.
Availability
AT49BV802A-70TI-T is available at Aetrix Electronics and suitable for industrial HMI, medical diagnostics, automotive telematics, and networking edge router designs requiring stable component supply, long lifecycle support, and guaranteed traceability.
Supply support for AT49BV802A-70TI-T 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
Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel Flash products including the AT49BV802A series. The company specializes in microcontrollers, analog, Flash, and security ICs for embedded markets.
The AT49BV802A-70TI-T belongs to Atmel's parallel-interface Flash memory product line, designed specifically for cost-sensitive, high-reliability embedded systems needing in-system programmability, sector-level security, and robust operation across industrial temperature ranges.
FAQ
What is the operating voltage range for the AT49BV802A-70TI-T?
The AT49BV802A-70TI-T operates from 2.65V to 3.6V, enabling direct integration with 3.3V logic families without level shifters. This wide supply range accommodates voltage droop in battery-powered or automotive environments while maintaining full 70 ns access time and reliable program/erase functionality across the entire range.
Does the AT49BV802A-70TI-T support both x8 and x16 data bus configurations?
Yes, the AT49BV802A-70TI-T supports both configurations via the BYTE pin: logic high selects x16 mode (I/O0–I/O15 active), logic low selects x8 mode (I/O0–I/O7 active, I/O8–I/O14 tri-stated, I/O15 repurposed as A-1). This flexibility allows seamless interfacing with 8-bit or 16-bit microcontrollers without redesigning the PCB layout.
How does sector lockdown work on the AT49BV802A-70TI-T?
Sector lockdown on the AT49BV802A-70TI-T is enabled per sector using a six-byte command sequence. Once activated, the locked sector becomes read-only - immune to program or erase commands until the next power cycle or RESET assertion. This ensures boot code or calibration data remains tamper-proof during field firmware updates elsewhere in the memory array.
What status detection methods does the AT49BV802A-70TI-T provide for program/erase completion?
The AT49BV802A-70TI-T provides three independent status detection methods: (1) RDY/BUSY open-drain pin (active-low), (2) Data Polling on I/O7 (complement/data toggle), and (3) Toggle Bit on I/O6. All are configurable via the status register and may be used concurrently - giving designers flexibility to match host processor capabilities and real-time constraints.
Is the AT49BV802A-70TI-T compatible with the Common Flash Interface (CFI)?
Yes, the AT49BV802A-70TI-T fully implements the Common Flash Interface standard. Entering CFI Query mode (via 98h write to address 55h) allows host software to auto-detect geometry, timing parameters, and supported commands - simplifying driver development and enabling drop-in replacement across CFI-compliant Flash devices from multiple vendors.
AT49BV802A-70TI-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8, 512K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 200µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49BV802A-70TI-T FAQ
1.How can I place an order for AT49BV802A-70TI-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV802A-70TI-T 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 AT49BV802A-70TI-T reliable?
The price and inventory of AT49BV802A-70TI-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV802A-70TI-T is usually 5 days.
3.What payment methods are accepted for AT49BV802A-70TI-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV802A-70TI-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV802A-70TI-T?
AT49BV802A-70TI-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV802A-70TI-T 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 AT49BV802A-70TI-T?
For technical support, including AT49BV802A-70TI-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV802A-70TI-T requirements.
6.How does Aetrix verify that AT49BV802A-70TI-T is sourced from the original manufacturer or authorized distributors?
All AT49BV802A-70TI-T 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 AT49BV802A-70TI-T meets industry standards.
7.What is the process for return or replacement of AT49BV802A-70TI-T?
All AT49BV802A-70TI-T units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV802A-70TI-T, 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 AT49BV802A-70TI-T part is unused and in its original packaging.
Return procedure for AT49BV802A-70TI-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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