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Microchip Technology AT49BV163DT-70TU-T
- Part No.:
- AT49BV163DT-70TU-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV163DT-70TU-T.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,965
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Product details
Overview
AT49BV163DT-70TU-T from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) single-supply 3V Flash memory IC with sector erase architecture, 70 ns read access time, and support for byte/word programming and suspend/resume operations. It serves as nonvolatile program/data storage in embedded microcontroller boot loaders, firmware update modules, and industrial control systems requiring in-system reprogrammability.
For engineers reviewing the AT49BV163DT-70TU-T datasheet, AT49BV163DT-70TU-T pinout, AT49BV163DT-70TU-T application, or AT49BV163DT-70TU-T equivalent, key selection criteria include its 39-sector layout (eight 8K-byte + thirty-one 64K-byte sectors), TSOP-48/CBGA-48 dual-package availability, Common Flash Interface (CFI) compliance, 128-bit protection register, and hardware data protection via VCC sense and control-line inhibit logic.
Technical Context
The AT49BV163DT-70TU-T implements a command-register-based Flash architecture with dedicated state machine for erase, program, and suspend/resume functions. Its dual-mode I/O interface supports x8 (BYTE = low) and x16 (BYTE = high) configurations, with A-1 repurposed as LSB address input in byte mode.
It integrates hardware-level security features including factory-programmed 64-bit block A and user-programmable/lockable 64-bit block B in the 128-bit protection register, plus sector lockdown enabling secure boot code retention during field updates. CFI Query mode (entry via 98h at address 55h) provides standardized parameter discovery for system software abstraction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16 or 2,097,152 × 8), enabling compact firmware storage for 8/16-bit MCUs. |
| Read Access Time | 70 ns - meets timing requirements for high-speed bus interfaces without wait states in 33 MHz CPU systems. |
| Erase Architecture | 39 sectors: eight 8K-byte (4K-word) + thirty-one 64K-byte (32K-word) - enables granular firmware partitioning and partial updates. |
| Program Time | 10 µs per word - supports rapid field firmware patching with minimal system downtime. |
| Sector Erase Time | 100 ms max - predictable latency for background erase operations in real-time applications. |
| Supply Voltage | 2.65 V to 3.6 V - compatible with modern low-voltage 3.3 V rails and tolerant of brown-out conditions down to 2.65 V. |
| End-of-Operation Detection | RDY/BUSY pin, Data Polling (I/O7), Toggle Bit (I/O6), and Erase/Program Status (I/O5) - provides multiple synchronous/asynchronous methods for host controller coordination. |
Pinout & Package
AT49BV163DT-70TU-T is available in 48-lead TSOP-I (Type 1) and 48-ball CBGA packages. The "-TU-T" suffix denotes the TSOP-48 variant with lead-free (Pb/Halide-free) green packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A-1 functionally multiplexed on I/O15 in byte mode. |
| I/O0–I/O14 | Data I/O (x8/x16) | Bi-directional data bus; I/O8–I/O14 tri-stated in byte mode; I/O15 serves as A-1 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 2M-byte addressing. |
| BYTE | Configuration Control | Logic-high selects x16 operation (I/O0–I/O15 active); logic-low enables x8 mode (I/O0–I/O7 active, I/O8–I/O14 high-Z). |
| CE, OE, WE | Control Signals | Three independent enables prevent bus contention; CE/OE low + WE high = read; CE/WE low + OE high = write. |
| RDY/BUSY | Open-Drain Status Output | Active-low indicates ongoing program/erase; supports wired-OR connection across multiple Flash devices. |
| RESET | Hardware Initialization | Pulsing low ≥500 ns halts current operation and forces high-Z outputs; returns device to read/standby mode on release. |
Key Features
| Feature | Design Value |
|---|---|
| Erase Suspend/Resume | Interrupts sector/chip erase to read/program other sectors within ≤15 µs, enabling concurrent firmware validation and update. |
| Program Suspend/Resume | Pauses active word programming to read any non-suspended location within ≤10 µs, supporting real-time debug access during writes. |
| Sector Lockdown | Per-sector write-protection activated via six-cycle command; locked sectors retain boot code integrity across power cycles. |
| 128-bit Protection Register | Factory-block A (64-bit unique ID) + user-block B (64-bit programmable/lockable) - enables cryptographic key binding and anti-cloning. |
| Common Flash Interface (CFI) | Standardized query table accessible at address 55h (98h command) - eliminates hard-coded timing assumptions in bootloader firmware. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Loader |
|---|---|
Use Scenario: Storing certified firmware images and configuration parameters in programmable logic controllers deployed in factory automation environments with extended temperature and EMI requirements. IC Role / Device Role / Timing Role: Nonvolatile program memory providing deterministic 70 ns read access for real-time instruction fetch and 100 ms sector erase for scheduled firmware upgrades. Use Value: Sector lockdown prevents accidental overwrites of safety-critical boot code while allowing field updates to application partitions - meeting IEC 61508 SIL-2 requirements. | Use Scenario: Hosting boot firmware and regulatory-compliant diagnostic routines in portable ultrasound and infusion pump controllers requiring traceable firmware revision control. IC Role / Device Role / Timing Role: Secure Flash memory with 128-bit protection register used to bind firmware signatures to hardware IDs and enforce cryptographic verification at power-on. Use Value: Factory-programmed block A and lockable block B enable HIPAA/FDA audit trails by cryptographically linking firmware versions to specific production batches. |
| Automotive Infotainment Update Module | Network Router Configuration Storage |
Use Scenario: Storing updatable map data, UI assets, and OTA update staging buffers in automotive head units operating across -40°C to +85°C ambient range. IC Role / Device Role / Timing Role: Dual-voltage Flash memory supporting 2.65–3.6 V supply tolerance and suspend/resume for seamless background map downloads during vehicle operation. Use Value: Erase suspend allows simultaneous reading of active navigation data while downloading new map tiles into protected sectors - eliminating UI freezes during updates. | Use Scenario: Retaining persistent configuration, routing tables, and TLS certificates in enterprise-grade Ethernet switches requiring zero-downtime failover and firmware rollback. IC Role / Device Role / Timing Role: CFI-compliant Flash memory enabling auto-discovery of timing parameters and sector map by Linux-based bootloader (e.g., U-Boot) during cold start. Use Value: Standardized CFI interface eliminates vendor-specific driver development and ensures second-source compatibility across router generations. |
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, 3.0–3.6 V; lacks CFI, no 128-bit protection register, no sector lockdown. | Lower security assurance; suitable for cost-sensitive consumer electronics where firmware integrity is not safety-critical. | Select when CFI and hardware security features are unnecessary and legacy SST39 pinout compatibility is required. |
| MX29LV160DBTI-70G | 16 Mbit, 70 ns, 2.7–3.6 V; includes CFI and sector protection but no suspend/resume or 128-bit register. | Supports basic firmware updates but cannot perform concurrent read/write during erase - limits real-time system responsiveness. | Choose for industrial applications needing CFI and sector lock but not requiring background suspend capability. |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160DBTI-70G, the AT49BV163DT-70TU-T uniquely combines suspend/resume, 128-bit protection, and sector lockdown - making it the only option among the three qualified for safety-critical boot storage with concurrent update capability.
Availability
AT49BV163DT-70TU-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot loaders, automotive infotainment update modules, and network router configuration storage requiring stable component supply across extended product lifecycles.
Supply support for AT49BV163DT-70TU-T 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 Inc. is a leading provider of microcontroller, analog, FPGA, and Flash memory solutions, acquired Atmel in 2016 and maintains full technical and manufacturing continuity for the AT49BV series.
The AT49BV163DT-70TU-T belongs to Microchip's legacy parallel-interface Flash memory product line, designed specifically for embedded systems requiring robust in-system programmability, hardware security, and long-term reliability in harsh environments.
FAQ
What is the difference between AT49BV163D and AT49BV163DT variants?
The AT49BV163DT-70TU-T differs from the base AT49BV163D in its sector map: it uses thirty-one 64K-byte sectors and eight 8K-byte sectors (vs. thirty-one 64K-byte + eight 4K-byte in AT49BV163D), resulting in distinct address ranges per sector as defined in the AT49BV163DT Sector Address Table. This affects firmware partitioning and bootloader placement. Both share identical electrical specs, pinout, and command set.
Does AT49BV163DT-70TU-T support both x8 and x16 data bus widths?
Yes, AT49BV163DT-70TU-T supports configurable x8 or x16 operation via the BYTE pin. When BYTE = high, I/O0–I/O15 are active for 16-bit transfers; when BYTE = low, only I/O0–I/O7 are active (x8), and I/O15 functions as A-1 for 2M-byte addressing. This flexibility allows integration with 8-bit and 16-bit microcontrollers without external glue logic.
How does the sector lockdown feature work in AT49BV163DT-70TU-T?
The sector lockdown feature in AT49BV163DT-70TU-T is enabled per sector using a six-bus-cycle command. Once activated, the sector becomes read-only - immune to erase or program commands until the next power cycle or RESET pulse. Lockdown status is verified by reading address 00002H within the sector: I/O0 = high indicates lockdown active. This ensures boot code persistence during field firmware updates.
Can AT49BV163DT-70TU-T be used in systems requiring Common Flash Interface (CFI) compliance?
Yes, AT49BV163DT-70TU-T fully supports CFI. Entering CFI Query mode requires writing 98h to address 55h, after which standardized parameter tables (sector map, timings, voltages) are readable from defined addresses. This enables generic flash drivers in bootloaders like U-Boot to auto-configure without hard-coded device knowledge - critical for scalable firmware development.
What are the power consumption characteristics of AT49BV163DT-70TU-T during active and standby operation?
AT49BV163DT-70TU-T draws 10 mA typical during active read/program operations and only 15 µA in standby mode. Its low active current reduces thermal load in dense PCB layouts, while ultra-low standby draw extends battery life in always-on monitoring systems. Hardware data protection (VCC sense <1.8 V inhibits programming) further enhances reliability during brown-out conditions.
AT49BV163DT-70TU-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 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-TSOP
AT49BV163DT-70TU-T FAQ
1.How can I place an order for AT49BV163DT-70TU-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV163DT-70TU-T 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 AT49BV163DT-70TU-T reliable?
The price and inventory of AT49BV163DT-70TU-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV163DT-70TU-T is usually 5 days.
3.What payment methods are accepted for AT49BV163DT-70TU-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV163DT-70TU-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV163DT-70TU-T?
AT49BV163DT-70TU-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV163DT-70TU-T 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 AT49BV163DT-70TU-T?
For technical support, including AT49BV163DT-70TU-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV163DT-70TU-T requirements.
6.How does Aetrix verify that AT49BV163DT-70TU-T is sourced from the original manufacturer or authorized distributors?
All AT49BV163DT-70TU-T 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 AT49BV163DT-70TU-T meets industry standards.
7.What is the process for return or replacement of AT49BV163DT-70TU-T?
All AT49BV163DT-70TU-T units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV163DT-70TU-T, 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 AT49BV163DT-70TU-T part is unused and in its original packaging.
Return procedure for AT49BV163DT-70TU-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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