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Microchip Technology AT49BV802A-70TI
- Part No.:
- AT49BV802A-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV802A-70TI.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,146
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Product details
Overview
AT49BV802A-70TI from Microchip Technology (formerly Atmel) is an 8-Mbit (512K × 16 / 1M × 8) single-supply 3V Flash memory IC with sector erase architecture, 70 ns access time, and support for byte/word programming in embedded systems requiring in-system reprogrammability and boot code protection.
For engineers reviewing the AT49BV802A-70TI datasheet, AT49BV802A-70TI pinout, AT49BV802A-70TI application, or AT49BV802A-70TI equivalent, key selection considerations include sector lockdown capability, suspend/resume for concurrent read/program operations, CFI compliance, TSOP/CBGA package options, and hardware data protection under 2.65–3.6V operation.
Technical Context
The AT49BV802A-70TI implements a 23-sector architecture (15 × 64KB + 8 × 8KB), supports both x8 and x16 data bus configurations via the BYTE pin, and uses command-based operation with CE/OE/WE control to prevent bus contention. It features dual status detection-READY/BUSY pin and I/O-based polling/toggle bits-for program/erase cycle monitoring.
Its embedded write state machine handles internal voltage generation and timing, enabling single-pulse programming after entering Single Pulse Program Mode. Sector lockdown and 128-bit protection register provide hardware-enforced security for boot code and user-defined data, while CFI Query mode enables runtime system configuration discovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (524,288 × 16 or 1,048,576 × 8), enabling compact firmware storage in resource-constrained microcontrollers. |
| Access Time | 70 ns max - ensures compatibility with high-speed 8/16-bit bus interfaces in industrial controllers and communication modules. |
| Supply Voltage | 2.65 V to 3.6 V - supports direct integration with 3.3 V logic domains without level-shifting. |
| Program Time | 12 µs per byte/word - reduces firmware update latency during field upgrades or factory programming. |
| Erase Time | 300 ms per sector - balances speed and reliability for selective code patching without full chip erasure. |
| Erase Cycles | ≥100,000 per sector - guarantees long-term field reliability in applications with periodic configuration updates. |
| Package Options | 48-lead TSOP (Type 1) and 48-ball CBGA - provides layout flexibility for space-constrained PCBs and thermal-sensitive environments. |
Pinout & Package
AT49BV802A-70TI is available in two RoHS-compliant packages: 48-lead TSOP (Type 1, 12 mm × 20 mm) and 48-ball CBGA (8 mm × 10 mm). Both packages support top/bottom boot block configuration and share identical pin functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word (x16) or 1M-byte (x8) addressing; A-1 alias on I/O15 in byte mode. |
| I/O0–I/O14 | Data I/O (bidirectional) | Primary data path; I/O15 serves dual role: data bit (x16) or LSB address (A-1, x8) depending on BYTE pin state. |
| BYTE | Bus Width Select | 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 | Chip/Output/Write Enable | Three independent controls enable precise bus arbitration and eliminate contention in shared-memory systems. |
| RDY/BUSY | Open-drain Status Output | Active-low signal indicates ongoing program/erase; supports wired-OR of multiple devices on same status line. |
| RESET | Hardware Initialization | Asynchronous reset halts all operations and forces high-impedance outputs - critical for safe power-up sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Architecture | 23 independently erasable sectors (15 × 64KB + 8 × 8KB) enable granular firmware updates without disturbing boot code or calibration data. |
| Suspend/Resume Capability | Allows interruption of erase/program operations to read from or program other sectors - essential for real-time systems requiring concurrent memory access. |
| Sector Lockdown | Per-sector write-protection activated via command sequence; prevents accidental overwrites of secure boot loaders or safety-critical routines. |
| Common Flash Interface (CFI) | Standardized query table at fixed addresses enables automatic driver initialization and multi-vendor flash abstraction in OS/bootloader stacks. |
| 128-bit Protection Register | Factory-programmed Block A + user-programmable Block B (lockable) supports device authentication and encrypted key storage in secure boot implementations. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Protection |
|---|---|
Use Scenario: Storing firmware and configuration parameters in programmable logic controllers deployed in factory automation environments with frequent field updates. IC Role / Device Role / Timing Role: Non-volatile code storage with sector-level erase and suspend/resume for background updates without halting control execution. Use Value: Enables zero-downtime firmware patches via protected boot sectors and fast 12 µs byte programming - reducing maintenance windows and improving OEE. | Use Scenario: Securing boot loader and regulatory-compliant diagnostic routines in Class II/III medical instruments subject to FDA audit requirements. IC Role / Device Role / Timing Role: Trusted execution root-of-trust component with hardware-enforced lockdown and 128-bit register for cryptographic key binding. Use Value: Prevents unauthorized modification of certified software images using sector lockdown and immutable factory block - satisfying IEC 62304 traceability mandates. |
| Automotive Infotainment System Updates | Telecom Base Station Configuration Memory |
Use Scenario: Hosting updatable UI assets, language packs, and OTA update staging buffers in automotive head units operating across -40°C to +85°C. IC Role / Device Role / Timing Role: High-reliability Flash memory with 100,000+ erase cycles and 70 ns access for responsive GUI rendering and rapid update validation. Use Value: Delivers deterministic read performance and robustness against thermal cycling - meeting AEC-Q100 stress test requirements for infotainment subsystems. | Use Scenario: Storing FPGA configuration bitstreams, radio calibration tables, and protocol stack parameters in 5G small cell base stations with remote management. IC Role / Device Role / Timing Role: Field-upgradable non-volatile memory supporting CFI-driven auto-configuration and sector-locked critical calibration data. Use Value: Eliminates need for external configuration EEPROM by integrating protected parameter storage and CFI-based driver portability across hardware revisions. |
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 sector lockdown or 128-bit protection register. | Requires custom driver adaptation; unsuitable for secure boot or CFI-based auto-detection systems. | Select only when legacy SST39VF compatibility is required and security features are not needed. |
| MX29LV800CTTI-70G | Pin-compatible 8 Mbit Flash with 70 ns access, supports CFI and sector protection, but lacks suspend/resume and has slower 20 µs program time. | Valid drop-in replacement for basic read/write/erase use cases, but cannot support concurrent read-while-erase workflows. | Choose when board layout reuse is critical and suspend/resume functionality is not required in the target design. |
Compared with SST39VF800A-70-4C-NHE and MX29LV800CTTI-70G, the AT49BV802A-70TI uniquely combines suspend/resume, sector lockdown, and 128-bit protection - making it the only option among the three suitable for secure, real-time embedded firmware storage with zero-downtime updates.
Availability
AT49BV802A-70TI is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, automotive infotainment systems, and telecom base stations requiring stable component supply and long-term lifecycle support.
Supply support for AT49BV802A-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
Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel Flash products including the AT49BV series. The company specializes in microcontrollers, analog, Flash, and security ICs for industrial, automotive, and IoT markets.
The AT49BV802A-70TI belongs to Atmel's legacy parallel-interface Flash memory product line, designed specifically for embedded systems needing reliable, in-system programmable non-volatile storage with hardware-based security and real-time operational flexibility.
FAQ
What is the maximum operating voltage range for the AT49BV802A-70TI?
The AT49BV802A-70TI operates within a strict 2.65 V to 3.6 V supply range. Operation below 2.65 V disables programming via VCC sense protection, and exceeding 3.6 V risks permanent damage. This range aligns with standard 3.3 V logic systems and eliminates need for external regulators in most embedded designs.
Does the AT49BV802A-70TI support both x8 and x16 data bus configurations?
Yes, the AT49BV802A-70TI supports both configurations via the BYTE pin: logic high enables x16 mode (I/O0–I/O15 active), logic low enables x8 mode (I/O0–I/O7 active, I/O15 repurposed as A-1). This dual-mode flexibility allows seamless integration into 8-bit microcontrollers or 16-bit DSPs without redesigning the memory interface.
How does sector lockdown work on the AT49BV802A-70TI?
Sector lockdown on the AT49BV802A-70TI is enabled per sector using a six-bus-cycle command. Once locked, the sector becomes read-only - immune to erase or program commands until reset or power cycle. Lock status is verified by reading address 00002H within the sector, where I/O0 = 1 indicates lockdown is active.
Can the AT49BV802A-70TI be used in systems requiring Common Flash Interface (CFI) compliance?
Yes, the AT49BV802A-70TI fully supports CFI. Entering CFI Query mode (write 98h to address 55h) exposes standardized parameter tables at fixed offsets, enabling automatic driver initialization and vendor-agnostic flash management in bootloaders and OS kernels - a key requirement for scalable embedded platforms.
What are the supported package types for the AT49BV802A-70TI?
The AT49BV802A-70TI is offered in two surface-mount packages: 48-lead TSOP (Type 1, 12 mm × 20 mm) and 48-ball CBGA (8 mm × 10 mm). Both packages are Pb/halide-free, support top/bottom boot block configuration, and share identical pinouts and electrical characteristics - allowing layout reuse across form factors.
AT49BV802A-70TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-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:
- 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 FAQ
1.How can I place an order for AT49BV802A-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV802A-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 AT49BV802A-70TI reliable?
The price and inventory of AT49BV802A-70TI 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 is usually 5 days.
3.What payment methods are accepted for AT49BV802A-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV802A-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV802A-70TI?
AT49BV802A-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV802A-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 AT49BV802A-70TI?
For technical support, including AT49BV802A-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV802A-70TI requirements.
6.How does Aetrix verify that AT49BV802A-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV802A-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 AT49BV802A-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV802A-70TI?
All AT49BV802A-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV802A-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 AT49BV802A-70TI part is unused and in its original packaging.
Return procedure for AT49BV802A-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV802A-70TI Tags
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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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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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