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Microchip Technology AT49BV802A-70CI
- Part No.:
- AT49BV802A-70CI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-VFBGA, CSPBGA
- Datasheet:
-
AT49BV802A-70CI.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,807
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Product details
Overview
AT49BV802A-70CI 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 (x8) and word (x16) data interfaces via the BYTE pin.
For engineers reviewing the AT49BV802A-70CI datasheet, AT49BV802A-70CI pinout, AT49BV802A-70CI application, or AT49BV802A-70CI equivalent, key selection considerations include its 70 ns read timing, sector lockdown for boot code protection, CFI compliance for firmware abstraction, RDY/BUSY and toggle-bit status reporting, and TSOP/CBGA package options for space-constrained embedded designs.
Technical Context
The AT49BV802A-70CI implements a command-register-based Flash architecture with dual-mode addressing (A-1 LSB in byte mode, I/O15 as data in word mode) and hardware-controlled erase/program sequencing. Its 23-sector layout-comprising fifteen 32K-word (64KB) and eight 4K-word (8KB) sectors-enables granular write protection and partial updates without full-chip erasure.
It integrates multiple status detection mechanisms: RDY/BUSY open-drain output, Data Polling on I/O7, Toggle Bit on I/O6, and Erase/Program Status on I/O5-all configurable via a two-bit status register. The device supports CFI Query mode (0x98 at 0x55) for runtime parameter discovery and includes a factory-programmed 64-bit block plus user-programmable 64-bit block in its 128-bit protection register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (524,288 × 16 or 1,048,576 × 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 without level shifters |
| Byte/Word Program Time | 12 µs - determines minimum time between successive write operations to same location |
| Sector Erase Time | 300 ms - sets duration for erasing one 8KB or 64KB sector, critical for firmware update scheduling |
| Erase Endurance | 100,000 cycles - specifies guaranteed number of sector erase/write cycles before parametric failure |
| Standby Current | 13 µA - enables ultra-low-power retention in battery-backed or sleep-mode systems |
Pinout & Package
AT49BV802A-70CI is available in a 48-lead TSOP (Type 1) and 48-ball CBGA. Both packages share identical pin functions and signal mapping per the official Microchip datasheet (3405E–FLASH–2/07).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus; A-1 alias on I/O15 in byte mode enables x8 addressing expansion |
| I/O0–I/O14 | Data I/O (bidirectional) | Primary data path; tri-stated when CE or OE high; I/O8–I/O14 inactive in byte mode |
| I/O15 / A-1 | Mode-Dependent Terminal | In word mode: data bit 15; in byte mode: LSB address input (A-1), enabling 1M×8 addressing |
| BYTE | Interface Configuration | Logic high = x16 mode (I/O0–I/O15 active); logic low = x8 mode (I/O0–I/O7 active, I/O15 = A-1) |
| CE, OE, WE | Control Enables | Dual-line control (CE+OE) prevents bus contention; WE initiates command latching on rising edge |
| RDY/BUSY | Open-Drain Status Output | Active-low during internal program/erase; supports wired-OR of multiple devices on shared status line |
| RESET | Hardware Initialization | Pulsing low ≥500 ns forces return to read/standby mode and halts ongoing operations |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Architecture | 23 independently erasable sectors (15 × 64 KB + 8 × 8 KB) enable selective firmware updates without full-chip erase |
| Erase/Program Suspend | Allows interruption of erase or program to read/program other sectors - essential for real-time interrupt handling in embedded bootloaders |
| Sector Lockdown | Per-sector write-protection via six-cycle command; preserves boot code integrity while permitting field-upgradable application partitions |
| Common Flash Interface (CFI) | Standardized query table accessible at 0x55/0x98 enables OS/firmware abstraction and multi-vendor flash driver reuse |
| 128-bit Protection Register | Factory-block A (64-bit unique ID) + user-block B (lockable) supports secure boot key storage and anti-cloning measures |
Applications
| Industrial HMI Firmware Storage | Medical Device Bootloader Partition |
|---|---|
Use Scenario: Storing GUI assets, configuration profiles, and firmware images in panel-mounted HMIs with limited board space and no external programming interface. IC Role / Device Role / Timing Role: Nonvolatile code/data storage with 70 ns read access for responsive UI rendering and fast boot initialization. Use Value: Sector lockdown protects bootloader and calibration tables from accidental overwrite during field firmware updates via USB or Ethernet. |
Use Scenario: Hosting certified bootloader and diagnostic firmware in Class II medical equipment requiring traceable, tamper-resistant storage. IC Role / Device Role / Timing Role: Secure, endurance-rated Flash memory supporting IEC 62304-compliant update workflows and power-fail-safe writes. Use Value: 128-bit protection register stores cryptographic keys and device-specific identifiers; CFI enables standardized flash abstraction across product families. |
| Automotive Telematics Module | Networking Equipment Configuration Store |
Use Scenario: Retaining OTA update staging area, vehicle-specific calibration maps, and CAN message routing tables in telematics control units. IC Role / Device Role / Timing Role: In-system programmable Flash with suspend/resume for concurrent diagnostics and firmware patching during vehicle operation. Use Value: 300 ms sector erase time allows background partition updates without interrupting real-time CAN communication or GPS logging. |
Use Scenario: Storing switch/router configuration, MAC address tables, and vendor-specific feature licenses in managed Ethernet switches. IC Role / Device Role / Timing Role: High-reliability nonvolatile storage interfaced directly to ARM Cortex-A/M series processors via 16-bit parallel bus. Use Value: RDY/BUSY pin enables precise timing of configuration reload after power-on reset; 13 µA standby current reduces idle power in fanless chassis. |
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-EKE | 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 CFI abstraction is not required |
| MX29LV800CTTI-70G | Identical pinout and sector map; supports top/bottom boot configuration but has slower 90 ns access time | Lacks Erase/Program Suspend; cannot perform concurrent read/write during background erase | Valid drop-in replacement only if 70 ns timing margin is relaxed and suspend functionality is unused |
Compared with SST39VF800A-70-4C-EKE and MX29LV800CTTI-70G, the AT49BV802A-70CI uniquely combines CFI compliance, hardware-assisted sector lockdown, and true suspend/resume - making it optimal for safety-critical or field-upgradable embedded systems requiring runtime flexibility and security.
Availability
AT49BV802A-70CI is available at Aetrix Electronics and suitable for industrial HMI firmware storage, medical device bootloader partitioning, automotive telematics module updates, networking equipment configuration storage, and secure embedded boot applications requiring stable component supply and long-term lifecycle support.
Supply support for AT49BV802A-70CI 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 technical and manufacturing responsibility for the AT49BV802A-70CI family. Microchip is a global leader in microcontrollers, analog, and Flash memory solutions for industrial, automotive, and communications markets.
The AT49BV802A-70CI belongs to Atmel's legacy parallel-interface Flash memory product line, designed specifically for cost-sensitive, space-constrained embedded systems requiring in-system programmability, sector-level protection, and deterministic timing behavior.
FAQ
What is the operating voltage range for the AT49BV802A-70CI?
The AT49BV802A-70CI operates from 2.65V to 3.6V DC. This single-supply range eliminates the need for separate VPP programming voltages and allows direct integration with standard 3.3V logic systems. Operation below 2.65V disables programming functions via internal VCC sense circuitry, preventing inadvertent writes during brown-out conditions.
Does the AT49BV802A-70CI support both x8 and x16 data bus configurations?
Yes, the AT49BV802A-70CI supports both configurations via the BYTE pin. When BYTE = HIGH, it operates in 16-bit mode with I/O0–I/O15 active; when BYTE = LOW, it operates in 8-bit mode with I/O0–I/O7 active and I/O15 repurposed as A-1 (LSB address). This dual-mode capability simplifies migration between processor architectures without PCB redesign.
How does sector lockdown work on the AT49BV802A-70CI?
Sector lockdown on the AT49BV802A-70CI is enabled per sector using a six-bus-cycle command. Once activated, the locked sector becomes read-only: erase and program operations are blocked until the next power cycle or RESET pulse. Lockdown status can be verified by reading address 00002H within the sector - I/O0 = HIGH indicates lockdown is active.
What status reporting methods does the AT49BV802A-70CI provide for program/erase completion?
The AT49BV802A-70CI provides three independent status reporting methods: RDY/BUSY pin (open-drain active-low), Data Polling on I/O7 (complement-to-data or high-assertion depending on config register), and Toggle Bit on I/O6 (bit toggles during operation, stops when complete). These may be used individually or in combination for robust end-of-operation detection.
Is the AT49BV802A-70CI compatible with Common Flash Interface (CFI) standards?
Yes, the AT49BV802A-70CI fully supports CFI. Entering CFI Query mode (write 0x98 to address 0x55) exposes standardized parameter tables at fixed offsets, enabling host software to auto-detect geometry, timing, command sets, and features without hard-coded assumptions - critical for portable flash drivers and firmware upgradability.
AT49BV802A-70CI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-VFBGA, CSPBGA
- 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-CBGA (6x8)
AT49BV802A-70CI FAQ
1.How can I place an order for AT49BV802A-70CI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV802A-70CI 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-70CI reliable?
The price and inventory of AT49BV802A-70CI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV802A-70CI is usually 5 days.
3.What payment methods are accepted for AT49BV802A-70CI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV802A-70CI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV802A-70CI?
AT49BV802A-70CI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV802A-70CI 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-70CI?
For technical support, including AT49BV802A-70CI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV802A-70CI requirements.
6.How does Aetrix verify that AT49BV802A-70CI is sourced from the original manufacturer or authorized distributors?
All AT49BV802A-70CI 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-70CI meets industry standards.
7.What is the process for return or replacement of AT49BV802A-70CI?
All AT49BV802A-70CI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV802A-70CI, 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-70CI part is unused and in its original packaging.
Return procedure for AT49BV802A-70CI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV802A-70CI Tags
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