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Microchip Technology AT49BV640DT-70CU
- Part No.:
- AT49BV640DT-70CU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-VFBGA, CSPBGA
- Datasheet:
-
AT49BV640DT-70CU.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,679
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Product details
Overview
AT49BV640DT-70CU from Microchip Technology (formerly Atmel) is a 64-Mbit (4M × 16) single-supply Flash memory IC operating at 2.65–3.6 V, featuring 70 ns access time, sector erase architecture with 127 × 32K-word + 8 × 4K-word sectors, and suspend/resume capability for concurrent read/program during erase. It is used in embedded systems requiring in-system reprogramming of firmware or configuration data.
For engineers reviewing the AT49BV640DT-70CU datasheet, AT49BV640DT-70CU pinout, AT49BV640DT-70CU application, or AT49BV640DT-70CU equivalent, key selection considerations include its 48-ball CBGA package, CFI compliance, flexible sector protection (Softlock/Hardlock), 100,000 erase cycles, and dual-word programming support with VPP = 10.0 V.
Technical Context
The AT49BV640DT-70CU implements a command-driven Write State Machine (WSM) that manages program, erase, suspend, and resume operations without external timing control. Its architecture supports simultaneous background erase suspension and foreground word programming across independent sectors.
It integrates hardware-based data protection via VPP voltage sensing (inhibit below 0.4 V), WP pin-controlled Hardlock, RESET-initiated initialization, and a 128-bit user-programmable protection register with factory-block A and lockable user-block B - all accessible via standardized CFI query and status register polling (SR7–SR0).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4,194,304 × 16-bit words); enables storage of large firmware images or boot code in compact footprint. |
| Access Time | 70 ns; ensures compatibility with high-speed microcontroller bus interfaces without wait states. |
| Supply Voltage | 2.65–3.6 V single supply; eliminates need for separate VCC/VPP rails in most embedded designs. |
| Erase Endurance | ≥100,000 cycles per sector; supports field-upgradable applications with frequent firmware updates. |
| Sector Architecture | 135 sectors: 127 × 32K-word + 8 × 4K-word; allows granular update of critical boot code (small sectors) and bulk data (large sectors). |
| Program Time | 10 µs per word; enables fast in-system programming during manufacturing or service. |
| Standby Current | 15 µA; minimizes power consumption in battery-backed or low-power sleep modes. |
Pinout & Package
AT49BV640DT-70CU is housed in a 48-ball Ceramic Ball Grid Array (CBGA) package with 0.8 mm ball pitch, optimized for high-density PCB layouts and thermal performance in industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus supporting full 4M-word addressing; A0–A1 select byte within 16-bit word. |
| I/O0–I/O15 | Bidirectional Data Bus | 16-bit parallel interface; I/O7–I/O0 carry status register bits during Read Status Register mode. |
| CE, OE, WE | Chip/Output/Write Enable | Three independent controls prevent bus contention; OE/CE low + WE high = read mode. |
| VPP | Program/Erase Voltage Control | Enables write protection when <0.4 V; enables accelerated dual-word programming at 10.0 V. |
| WP | Hardware Sector Lock Override | Disables Hardlock protection when high; locks Hardlocked sectors permanently when low. |
| RESET | Asynchronous Initialization | Forces high-impedance outputs and returns device to read mode on rising edge. |
| VCCQ | Output Driver Supply | Separate 2.65–3.6 V rail for I/O drivers; ensures clean output levels independent of core VCC noise. |
Key Features
| Feature | Design Value |
|---|---|
| Erase Suspend/Resume | Allows reading or programming any non-erasing sector while erase is paused - essential for real-time systems updating firmware without halting operation. |
| Flexible Sector Protection | Independent Softlock (software-unlockable) and Hardlock (WP-pin-gated) per sector - secures boot code against accidental overwrite while permitting runtime update of application sectors. |
| Common Flash Interface (CFI) | Standardized query table at fixed addresses enables automatic driver detection and configuration in OS/bootloader environments without hard-coded timing parameters. |
| 128-bit Protection Register | Factory-programmed 64-bit ID + user-writable/lockable 64-bit block - supports secure device authentication and anti-cloning in certified embedded platforms. |
| Dual-Word Programming | Parallel programming of two adjacent words (A0-differing addresses) at VPP = 9.5–10.0 V - reduces production programming time by ~50% versus single-word mode. |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Boot Memory |
|---|---|
Use Scenario: Storing and updating ladder logic and I/O mapping tables in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Non-volatile firmware storage with in-system reprogrammability; operates as memory-mapped peripheral on 16-bit microcontroller bus. Use Value: Sector erase architecture enables safe partial updates of control algorithms without erasing safety-critical watchdog or calibration data stored in protected 4K-word sectors. | Use Scenario: Holding boot code and diagnostic routines in engine control units subject to ASAM-compliant flash programming protocols. IC Role / Device Role / Timing Role: Primary boot ROM accessed at power-on reset; supports UDS (ISO 14229) flash routines via CFI-identified timing parameters. Use Value: VPP-based write protection and Hardlock + WP pin integration meet automotive functional safety requirements for preventing unauthorized or erroneous firmware modification. |
| Medical Device Configuration Storage | Networking Equipment Image Backup |
Use Scenario: Retaining calibrated sensor offsets, user preferences, and regulatory audit logs in portable diagnostic equipment with battery backup. IC Role / Device Role / Timing Role: Low-power configuration memory; enters 15 µA standby during idle periods between patient measurements. Use Value: 100,000 erase cycles and 70 ns access ensure reliable long-term operation over 10+ year product lifecycles under frequent parameter updates. | Use Scenario: Storing redundant firmware images and FPGA configuration bitstreams in enterprise switches and routers for fail-safe recovery. IC Role / Device Role / Timing Role: Dual-image storage device accessed via PCI Express or local bus; supports hot-swap firmware rollback without system reboot. Use Value: Suspend/resume capability allows background verification of new image integrity while continuing packet forwarding from active sector - zero downtime during upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S29GL064N90TFI010 | 64 Mbit, 90 ns access, 3.0–3.6 V; no VPP pin; uses standard command set without dual-word programming. | Lacks suspend/resume and 128-bit protection register; requires external voltage translation for 2.65 V operation. | Preferred where CFI compatibility and lower cost outweigh need for ultra-fast programming or advanced security features. |
| MX29LV640ETTI-70G | 64 Mbit, 70 ns, 2.7–3.6 V; includes VPP but no CFI; 100,000 cycle rating same; lacks Hardlock/Softlock granularity. | Supports basic sector protection only; no 128-bit register or erase suspend - limited for secure or real-time upgrade use cases. | Selected when legacy design migration requires pin-compatible replacement with minimal firmware changes. |
Compared with S29GL064N90TFI010 and MX29LV640ETTI-70G, the AT49BV640DT-70CU uniquely combines 70 ns speed, VPP-accelerated programming, CFI auto-configuration, and dual-mode sector locking - making it optimal for new designs demanding both performance and field-upgrade security.
Availability
AT49BV640DT-70CU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot memory, and medical device configuration storage requiring stable component supply across extended product lifecycles.
Supply support for AT49BV640DT-70CU 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 is a global semiconductor company specializing in microcontrollers, analog devices, and non-volatile memory solutions for industrial, automotive, and communications markets.
The AT49BV640DT-70CU belongs to Microchip's legacy Atmel Flash memory product line, designed specifically for embedded systems requiring robust, in-system programmable storage with hardware-enforced data integrity and long-term reliability.
FAQ
What is the operating voltage range for the AT49BV640DT-70CU?
The AT49BV640DT-70CU operates from 2.65 V to 3.6 V on a single VCC supply. Its VPP pin requires either <0.4 V (to inhibit programming) or ≥1.65 V (for normal operation), with 10.0 V enabling accelerated dual-word programming. VCCQ must be tied to VCC for proper output levels, and input pins tolerate up to 5.5 V regardless of VCC level.
How does sector protection work on the AT49BV640DT-70CU?
The AT49BV640DT-70CU implements two independent sector protection modes: Softlock (software-unlockable via command) and Hardlock (hardware-gated by WP pin state). At power-up, all sectors default to Softlock. Hardlock becomes permanent if WP is low during activation; raising WP to VIH overrides Hardlock, allowing unlock. Both modes prevent erase/program attempts and set SR1 in the status register upon violation.
Can the AT49BV640DT-70CU perform read operations during erase or program?
Yes - the AT49BV640DT-70CU supports Erase Suspend and Program Suspend commands. After issuing B0h, the device pauses the background operation within 15 µs (erase) or 10 µs (program), allowing immediate reads or writes to any other sector or word. Resume is triggered with D0h. Valid concurrent commands include Read, Read Status Register, and Product ID Entry.
What is the purpose of the VPP pin on the AT49BV640DT-70CU?
The VPP pin on the AT49BV640DT-70CU serves dual roles: write protection and programming acceleration. When VPP < 0.4 V, all program/erase functions are inhibited. At ≥1.65 V, standard operations proceed. At 10.0 V, the Dual-word Program command (E0h) enables simultaneous programming of two adjacent words - reducing production programming time significantly compared to single-word mode.
Does the AT49BV640DT-70CU support industry-standard flash interfaces?
Yes - the AT49BV640DT-70CU fully complies with the Common Flash Interface (CFI) specification. Entering CFI Query mode (via 98h command) exposes standardized timing, geometry, and command-set descriptors at fixed memory addresses, enabling automatic driver generation and seamless second-source interoperability in bootloader and OS environments.
AT49BV640DT-70CU 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:
- 64Mbit
- Memory Organization:
- 4M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 120µs
- 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 (7x10)
AT49BV640DT-70CU FAQ
1.How can I place an order for AT49BV640DT-70CU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV640DT-70CU 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 AT49BV640DT-70CU reliable?
The price and inventory of AT49BV640DT-70CU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV640DT-70CU is usually 5 days.
3.What payment methods are accepted for AT49BV640DT-70CU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV640DT-70CU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV640DT-70CU?
AT49BV640DT-70CU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV640DT-70CU 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 AT49BV640DT-70CU?
For technical support, including AT49BV640DT-70CU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV640DT-70CU requirements.
6.How does Aetrix verify that AT49BV640DT-70CU is sourced from the original manufacturer or authorized distributors?
All AT49BV640DT-70CU 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 AT49BV640DT-70CU meets industry standards.
7.What is the process for return or replacement of AT49BV640DT-70CU?
All AT49BV640DT-70CU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV640DT-70CU, 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 AT49BV640DT-70CU part is unused and in its original packaging.
Return procedure for AT49BV640DT-70CU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV640DT-70CU Tags
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