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Microchip Technology AT49BV8011-11CI
- Part No.:
- AT49BV8011-11CI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-VFBGA, CSPBGA
- Datasheet:
-
AT49BV8011-11CI.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,505
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Product details
Overview
AT49BV8011-11CI from Atmel is an 8-megabit (524,288 × 16-bit / 1,048,576 × 8-bit) single-supply Flash memory IC operating at 2.7–3.3 V, featuring 90 ns access time, sector erase architecture with 22 individually lockable sectors, dual-plane concurrent read-while-program/erase capability, and erase suspend/resume functionality. It supports in-system programming in embedded microcontroller boot applications.
For engineers reviewing the AT49BV8011-11CI datasheet, AT49BV8011-11CI pinout, AT49BV8011-11CI application, or AT49BV8011-11CI equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in boot memory and firmware storage, and two validated alternative parts with documented functional and packaging differences.
Technical Context
The AT49BV8011-11CI implements a dual-plane Flash architecture: Plane A contains fourteen 32K-word sectors plus two 16K-word and two 8K-word sectors; Plane B contains four 4K-word, two 8K-word, and two 16K-word sectors. This enables true concurrent read from one plane while program/erase executes in the other.
It supports three operational modes-read, byte/word program, and sector/chip erase-via six-byte command sequences latched on CE or WE edges. Erase suspend halts active sector erase for ≤15 µs to allow reads or writes elsewhere in the same plane, and RESET at 12V ±0.5V overrides sector lockout for secure reprogramming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (524,288 × 16-bit or 1,048,576 × 8-bit), enabling compact boot code and firmware storage in space-constrained designs |
| Supply Voltage | 2.7–3.3 V single supply, compatible with modern low-voltage microcontroller I/O domains without level-shifting |
| Access Time | 90 ns maximum, ensuring fast instruction fetch for real-time boot and runtime code execution |
| Sector Erase Time | 200 ms per sector, supporting rapid field firmware updates without full chip erase delays |
| Active Current | 25 mA typical, minimizing power draw during active read/write in battery-backed or energy-sensitive systems |
| Standby Current | 10 µA typical, enabling ultra-low-power retention during system sleep or idle states |
| Package | 48-ball CBGA (48C3) or 48-lead TSOP (48T), both industry-standard footprints for high-density PCB layouts |
Pinout & Package
The AT49BV8011-11CI is available in a 48-ball CBGA (48C3) package measuring 7.15 × 6.85 mm with 0.80 mm ball pitch, and a 48-lead TSOP (48T) package compliant with JEDEC MO-142 DD outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 524,288-word addressing in x16 mode; A-1 alias on I/O15 in x8 mode |
| I/O0–I/O15 | Data I/O (x16) / I/O0–I/O7 + A-1 (x8) | Configurable byte/word interface via BYTE pin; I/O15 serves as LSB address input in byte mode |
| CE, OE, WE | Chip Enable, Output Enable, Write Enable | Standard asynchronous control signals enabling bus contention avoidance and standard microprocessor timing compliance |
| RDY/BUSY | Open-drain status output | Signals internal operation completion; supports OR-tying for multi-device status monitoring |
| RESET | Hardware initialization and lockout override | Resets device state; 12V ±0.5V pulse unlocks protected sectors for secure reprogramming |
| VPP | Optional programming voltage input | Accepts 4.5–5.5 V to accelerate program/erase cycles; tied to VCC if unused |
| BYTE | Interface mode select | Logic '1' enables x16 data path (I/O0–I/O15); logic '0' enables x8 path (I/O0–I/O7) with A-1 on I/O15 |
Key Features
| Feature | Design Value |
|---|---|
| Dual-plane architecture | Enables simultaneous read from one memory plane while program/erase executes in the other, eliminating wait states in firmware update or boot loader operations |
| Erase suspend/resume | Pauses active sector erase within ≤15 µs to permit immediate read or program access to other sectors in the same plane, improving system responsiveness |
| Sector-level write lockout | Allows permanent protection of boot code sectors (e.g., SA14–SA21 in top-boot configuration) against accidental overwrite during field updates |
| 6-byte bypass unlock | Reduces programming overhead by enabling single-pulse byte/word writes after initial 6-byte sequence, accelerating firmware patching |
| Triple end-of-operation detection | Provides RDY/BUSY pin, DATA polling (I/O7 complement), and toggle bit (I/O6/I/O2) for flexible, robust timing control across diverse host controller designs |
Applications
| Boot Memory for Microcontrollers | Firmware Storage in Industrial PLCs |
|---|---|
Use Scenario: Storing bootloader and initial firmware image for ARM Cortex-M or 8051-based controllers requiring cold-start execution. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to processor's reset vector address space; accessed via parallel x16 interface with 90 ns latency. Use Value: Enables reliable, low-power, in-system programmable boot code with hardware sector lockout preventing corruption during field firmware upgrades. | Use Scenario: Holding configurable logic programs and HMI assets in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Field-updatable firmware repository supporting partial sector rewrites without disrupting running control logic. Use Value: Dual-plane concurrent read-while-erase allows PLC to maintain real-time I/O scanning during background firmware validation and installation. |
| Secure Code Vault in Medical Devices | Configuration Storage in Network Routers |
Use Scenario: Storing FDA-certified boot images and cryptographic keys in Class II medical equipment where tamper resistance is critical. IC Role / Device Role / Timing Role: Protected memory partition using 12V RESET override and sector lockout to enforce secure boot chain integrity. Use Value: Hardware-enforced write protection prevents unauthorized modification; erase suspend enables diagnostic reads during maintenance without interrupting protected operation. | Use Scenario: Retaining routing tables, VLAN settings, and security policies across power cycles in enterprise-grade Layer 3 switches. IC Role / Device Role / Timing Role: Parallel-accessed configuration store interfaced to MIPS or PowerPC host processors via CE/OE/WE control. Use Value: 22-sector granularity allows selective erasure of policy partitions without affecting core routing engine binaries, reducing reboot time after config changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF800A-90-4C-EKE | 48-pin TSOP only; 8 Mbit x16/x8; 90 ns access; 3.0–3.6 V supply; no dual-plane or erase suspend | Lacks concurrent read-while-erase and sector suspend; suitable for simpler, cost-sensitive boot memory where update concurrency is not required | Select when board layout uses TSOP and advanced suspend features are unnecessary; verify VCC tolerance match for 3.3 V systems |
| MX29LV800CBTI-90G | 48-pin TSOP; 8 Mbit x16/x8; 90 ns access; 2.7–3.6 V; includes CFI query support but no dual-plane architecture | Supports Common Flash Interface for auto-detection but lacks plane isolation; erase times are longer (500 ms typical sector erase) | Choose for legacy BIOS or UEFI firmware storage where CFI compatibility simplifies driver integration, accepting higher erase latency |
Compared with SST39VF800A-90-4C-EKE and MX29LV800CBTI-90G, the AT49BV8011-11CI uniquely delivers dual-plane concurrent operation and hardware-protected sector lockout-critical for real-time embedded systems requiring zero-downtime firmware updates and secure boot enforcement.
Availability
AT49BV8011-11CI is available at Aetrix Electronics and suitable for industrial PLCs, medical device boot loaders, network router configuration storage, and automotive infotainment firmware requiring stable component supply across extended temperature ranges.
Supply support for AT49BV8011-11CI 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 secure authentication devices for embedded systems.
The AT49BV/LV8011 series was designed specifically for in-system programmable boot memory applications requiring robust sector protection, low-voltage operation, and deterministic timing in industrial and medical environments.
FAQ
What is the operating temperature range for the AT49BV8011-11CI?
The AT49BV8011-11CI is rated for industrial temperature operation from –40°C to +85°C, making it suitable for deployment in harsh environments such as factory automation controllers, outdoor networking equipment, and automotive under-hood modules where thermal stability is critical. This rating is confirmed in the official Atmel ordering information table and applies to both CBGA and TSOP package variants of the AT49BV8011-11CI.
Does the AT49BV8011-11CI support both x8 and x16 data bus configurations?
Yes, the AT49BV8011-11CI supports configurable x8 or x16 operation via the BYTE pin: when BYTE = logic '1', I/O0–I/O15 are active for 16-bit transfers; when BYTE = logic '0', only I/O0–I/O7 are active for 8-bit transfers and I/O15 functions as the A-1 address input. This flexibility allows direct interface with both 8-bit and 16-bit microcontrollers without external glue logic, and is explicitly defined in the Pin Configurations section of the AT49BV8011-11CI datasheet.
How does the erase suspend feature work in the AT49BV8011-11CI?
The AT49BV8011-11CI's erase suspend feature halts an active sector erase operation within ≤15 µs, allowing immediate read or program access to any other sector in the same memory plane. It does not apply across planes-reads from Plane B are permitted during erase in Plane A without suspension. The feature is activated via the B0H command and resumed with a 30H command containing the plane address (A18–A16), and is validated in the Erase Suspend/Resume section of the AT49BV8011-11CI documentation.
What is the purpose of the VPP pin on the AT49BV8011-11CI?
The VPP pin on the AT49BV8011-11CI accepts 4.5–5.5 V to accelerate internal program and erase operations; when supplied, it reduces tBP (byte/word program time) and tSEC (sector erase time) versus VCC-only operation. If unused, VPP may be tied to VCC. This optional voltage boost is distinct from the 12V RESET override and is documented in the Features and Device Operation sections of the AT49BV8011-11CI datasheet.
Can the AT49BV8011-11CI be used as a drop-in replacement for the AT49LV8011-11CI?
No, the AT49BV8011-11CI is not a drop-in replacement for the AT49LV8011-11CI due to differing supply voltage ranges: the AT49BV8011-11CI operates from 2.7–3.3 V, while the AT49LV8011-11CI requires 3.0–3.3 V. Although pinout and command sets are identical, the lower 2.7 V minimum of the AT49BV8011-11CI enables operation in wider-margin power domains, but its behavior below 3.0 V is not guaranteed for the LV variant. Substitution requires verification of system VCC stability and timing margins.
AT49BV8011-11CI 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:
- 50µs
- Access Time:
- 110 ns
- Voltage - Supply:
- 2.7V ~ 3.3V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-CBGA (6x8)
AT49BV8011-11CI FAQ
1.How can I place an order for AT49BV8011-11CI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV8011-11CI 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 AT49BV8011-11CI reliable?
The price and inventory of AT49BV8011-11CI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV8011-11CI is usually 5 days.
3.What payment methods are accepted for AT49BV8011-11CI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV8011-11CI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV8011-11CI?
AT49BV8011-11CI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV8011-11CI 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 AT49BV8011-11CI?
For technical support, including AT49BV8011-11CI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV8011-11CI requirements.
6.How does Aetrix verify that AT49BV8011-11CI is sourced from the original manufacturer or authorized distributors?
All AT49BV8011-11CI 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 AT49BV8011-11CI meets industry standards.
7.What is the process for return or replacement of AT49BV8011-11CI?
All AT49BV8011-11CI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV8011-11CI, 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 AT49BV8011-11CI part is unused and in its original packaging.
Return procedure for AT49BV8011-11CI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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