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Microchip Technology AT49BV1604-11UI
- Part No.:
- AT49BV1604-11UI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
AT49BV1604-11UI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48UBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,519
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Product details
Overview
AT49BV1604-11UI from Microchip Technology (formerly Atmel) is a 16-megabit (1M × 16 / 2M × 8) 2.7–3.3V Flash memory IC with dual-plane architecture, 90 ns access time, and sector erase capability across 40 independently lockable sectors. It supports concurrent read-while-write/erase operations and is used in embedded boot code storage, firmware update modules, and industrial controller nonvolatile memory.
For engineers reviewing the AT49BV1604-11UI datasheet, AT49BV1604-11UI pinout, AT49BV1604-11UI application, or AT49BV1604-11UI equivalent, key selection considerations include its 48-pin TSOP/µBGA packaging, byte/word mode select via BYTE pin, erase suspend/resume functionality, and VPP-assisted 20 µs program timing - all critical for real-time firmware partitioning and in-system programming reliability.
Technical Context
The AT49BV1604-11UI implements a dual-plane memory architecture: Plane A contains eight 4K-word, two 16K-word, and six 32K-word sectors; Plane B contains twenty-four 32K-word sectors. This enables simultaneous read from one plane while programming or erasing the other, eliminating wait states during firmware updates.
It features hardware-based sector protection with lockout override via 12V ± 0.5V on RESET, three end-of-operation detection methods (RDY/BUSY, Data Polling on I/O7, Toggle Bit on I/O6/I/O2), and command-set compatibility with JEDEC-standard Flash protocols including six-byte unlock sequences and software product identification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16-bit or 2,097,152 × 8-bit) - supports boot code + application firmware in single device |
| Access Time | 90 ns - meets timing requirements for 11 MHz bus interfaces without wait states |
| Supply Voltage | 2.7V to 3.3V - compatible with modern low-voltage microcontroller I/O domains |
| Program Time | 20 µs per word - enables rapid field firmware patching when combined with bypass unlock mode |
| Sector Erase Time | 200 ms per sector - allows granular firmware partitioning without full-chip erase latency |
| Standby Current | 10 µA - suitable for battery-backed systems requiring ultra-low quiescent power |
| Operating Temp | -40°C to +85°C - qualified for industrial-grade embedded control environments |
Pinout & Package
AT49BV1604-11UI is available in 48-pin TSOP Type 1 and 48-ball µBGA packages. Pin functions are identical across both packages; ball/pin numbering differs per mechanical layout but electrical mapping is consistent.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A-1 multiplexed on I/O15 in byte mode |
| I/O0–I/O15 | Data I/O (x16) / I/O0–I/O7 + A-1 (x8) | Configurable 16-bit or 8-bit data interface; I/O15 serves as LSB address input in byte mode |
| CE, OE, WE | Chip Enable, Output Enable, Write Enable | Standard asynchronous SRAM-like control; dual-line CE/OE prevents bus contention |
| BYTE | Interface Mode Select | Logic high = x16 word mode (I/O0–I/O15 active); logic low = x8 byte mode (I/O0–I/O7 active, I/O15 = A-1) |
| RDY/BUSY | Open-drain status output | Active-low indicates ongoing program/erase; supports wired-OR of multiple devices on shared bus |
| VPP | Optional programming voltage | Accepts 4.5–5.5V to reduce program/erase times; may be tied to VCC if not used |
| RESET | Hardware initialization & lockout override | Pulling low halts operation and tri-states outputs; 12V ± 0.5V enables sector reprogramming despite lockout |
Key Features
| Feature | Design Value |
|---|---|
| Dual-plane concurrent operation | Read from Plane B while erasing/programming Plane A - eliminates system stall during firmware updates |
| Erase suspend/resume | Pause active sector erase to read/program another sector in same plane - enables responsive background maintenance |
| Hardware sector lockout | Per-sector write protection prevents accidental overwrite of boot code; override requires 12V RESET pulse |
| Bypass unlock command | Six-byte sequence enables single-pulse programming - cuts host MCU overhead vs. standard four-cycle writes |
| Triple end-of-operation detection | RDY/BUSY pin, Data Polling (I/O7 complement), and Toggle Bit (I/O6/I/O2) provide redundant, software-flexible status monitoring |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Boot Memory |
|---|---|
Use Scenario: Storing bootloader and safety-critical calibration tables in programmable logic controllers with periodic field updates. IC Role / Device Role / Timing Role: Nonvolatile boot memory with hardware write protection for immutable startup code and user-configurable parameter sectors. Use Value: Sector lockout prevents corruption of boot code during over-the-air updates; 90 ns access ensures deterministic startup timing. |
Use Scenario: Holding engine control unit firmware that must survive vehicle battery disconnect and support secure reflash via diagnostic port. IC Role / Device Role / Timing Role: Primary flash storage for ISO 14229-compliant UDS reprogramming with erase-suspend capability for runtime diagnostics. Use Value: Dual-plane architecture allows diagnostic readback during flash programming; 10 µA standby current extends battery life in sleep mode. |
| Medical Device Configuration Memory | Networking Equipment Image Partitioning |
Use Scenario: Retaining regulatory-compliant device configuration profiles and audit logs in Class II medical instruments with tamper-evident firmware integrity checks. IC Role / Device Role / Timing Role: Secure, sector-protected storage for FDA-required configuration history and calibration certificates. Use Value: Hardware lockout + 12V RESET override enables authorized service personnel to recover corrupted sectors without replacing hardware. |
Use Scenario: Hosting dual firmware images (active/backup) in enterprise switches/routers to enable atomic fail-safe upgrades without service interruption. IC Role / Device Role / Timing Role: High-reliability flash memory partitioned into mirrored image banks with independent sector erase control. Use Value: Concurrent read-while-erase allows background validation of backup image during active runtime; 200 ms sector erase enables sub-second switchover. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF1601C-70-4C-EKE | 16 Mbit, 70 ns access, 3.0–3.6V supply, no VPP pin, lacks erase suspend | Lower power active current (25 mA vs. 35 mA), but no concurrent read-while-erase capability | Choose for cost-sensitive designs where firmware update concurrency is unnecessary and tighter voltage tolerance is required |
| MX29LV160DBTI-70G | 16 Mbit, 70 ns access, 2.7–3.6V, top-boot configuration only, no dual-plane architecture | Supports common Flash command set but lacks plane-level parallelism and sector lockout override | Prefer when legacy board layout uses identical pinout and boot-block location is fixed; verify RESET pin voltage limits before use |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160DBTI-70G, the AT49BV1604-11UI uniquely delivers dual-plane concurrency and hardware-overrideable sector lockout - essential for systems requiring zero-downtime firmware updates and field-serviceable security partitions.
Availability
AT49BV1604-11UI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot memory, and medical device configuration memory requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for AT49BV1604-11UI 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 secure, reliable nonvolatile memory for mission-critical embedded systems.
The AT49BV1604-11UI belongs to Atmel's BV-series 3V Flash family, designed specifically for in-system programmable boot memory in resource-constrained industrial and automotive applications where data integrity and update flexibility are paramount.
FAQ
What is the maximum operating temperature range for the AT49BV1604-11UI?
The AT49BV1604-11UI is rated for industrial temperature operation from -40°C to +85°C. This specification is confirmed in the DC and AC Operating Range table on page 9 of the official datasheet (Rev. 0925K–09/00). The "-11" suffix denotes the 110 ns access time grade, which shares the same thermal qualification as the broader AT49BV16X4(T) family. AT49BV1604-11UI devices undergo full temperature testing per this range.
Does the AT49BV1604-11UI support both x8 and x16 data bus configurations?
Yes, the AT49BV1604-11UI supports configurable x8 or x16 operation via the BYTE pin. When BYTE = HIGH, I/O0–I/O15 function as a 16-bit data bus; when BYTE = LOW, I/O0–I/O7 operate as an 8-bit bus and I/O15 serves as the A-1 address input. This dual-mode capability is explicitly defined in the Device Operation section and pin configuration diagrams for both TSOP and µBGA packages. AT49BV1604-11UI retains full functionality in either mode.
How does the erase suspend feature work on the AT49BV1604-11UI?
The AT49BV1604-11UI supports erase suspend by issuing the B0H command, which pauses an active sector erase after ≤15 µs. Once suspended, the device enters erase-suspend-read mode, allowing reads or programming to any other sector within the same memory plane. Resume is triggered with the 30H command plus plane address (A19/A18). This feature is documented in detail on pages 4–5 of the datasheet. AT49BV1604-11UI does not require suspension when reading from the opposite plane due to its dual-plane architecture.
Can the AT49BV1604-11UI be programmed using only a 3.3V supply, or is VPP required?
The AT49BV1604-11UI can be fully programmed and erased using only a 2.7–3.3V VCC supply - VPP is optional. Applying 4.5–5.5V to VPP reduces program and erase times but is not mandatory. The datasheet states: "This pin can be tied to VCC" and "To take advantage of faster programming and erasing, the pin should supply 4.5 to 5.5 volts…" The AT49BV1604-11UI operates reliably in standard 3.3V systems without external high-voltage circuitry.
What command sequence unlocks sector programming lockout on the AT49BV1604-11UI?
Sector programming lockout on the AT49BV1604-11UI is enabled via a six-command sequence: load AAH to 5555H, 55H to 2AAAH, then 40H to 5555H (with sector address). To override an already-locked sector, apply 12.0V ± 0.5V to the RESET pin during chip erase, sector erase, or programming - this bypasses hardware lockout. Both procedures are specified in the Sector Programming Lockout Override section (page 4) and Command Definitions table (page 6). AT49BV1604-11UI requires precise voltage compliance for reset-based override.
AT49BV1604-11UI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-TFBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M x 8, 1M 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-µBGA (6.75x8.5)
AT49BV1604-11UI FAQ
1.How can I place an order for AT49BV1604-11UI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV1604-11UI 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 AT49BV1604-11UI reliable?
The price and inventory of AT49BV1604-11UI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV1604-11UI is usually 5 days.
3.What payment methods are accepted for AT49BV1604-11UI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV1604-11UI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV1604-11UI?
AT49BV1604-11UI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV1604-11UI 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 AT49BV1604-11UI?
For technical support, including AT49BV1604-11UI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV1604-11UI requirements.
6.How does Aetrix verify that AT49BV1604-11UI is sourced from the original manufacturer or authorized distributors?
All AT49BV1604-11UI 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 AT49BV1604-11UI meets industry standards.
7.What is the process for return or replacement of AT49BV1604-11UI?
All AT49BV1604-11UI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV1604-11UI, 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 AT49BV1604-11UI part is unused and in its original packaging.
Return procedure for AT49BV1604-11UI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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