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Microchip Technology AT49BV163D-70CU-T
- Part No.:
- AT49BV163D-70CU-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-VFBGA, CSPBGA
- Datasheet:
-
AT49BV163D-70CU-T.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,312
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Product details
Overview
AT49BV163D-70CU-T from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) single-supply 3V Flash memory IC used for nonvolatile code and data storage in embedded systems. It supports x8/x16 configurable data bus, features 70 ns read access time, sector erase architecture with 39 sectors (31 × 64 KB + 8 × 8 KB), and operates across 2.65–3.6 V. It is commonly deployed in boot code storage for industrial controllers and firmware update modules.
For engineers reviewing the AT49BV163D-70CU-T datasheet, AT49BV163D-70CU-T pinout, AT49BV163D-70CU-T application, or AT49BV163D-70CU-T equivalent, key selection considerations include sector lockdown capability, suspend/resume support during erase/program, CFI compliance, and TSOP-48/CBGA-48 package compatibility with legacy 3V microcontroller interfaces.
Technical Context
The AT49BV163D-70CU-T implements a command-register-based Flash architecture with dual-mode (byte/word) operation controlled by the BYTE pin. Its internal write state machine handles embedded program/erase algorithms, eliminating external timing control.
It supports three status detection methods-READY/BUSY pin, Data Polling (I/O7), and Toggle Bit (I/O6)-with configurable behavior via a two-bit configuration register. Sector Lockdown and 128-bit Protection Register provide hardware-level security for boot code and sensitive configuration data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16-bit or 2,097,152 × 8-bit) |
| Read Access Time | 70 ns - enables direct execution (XIP) from Flash in real-time MCU applications |
| Supply Voltage | 2.65 V to 3.6 V - compatible with 3.3 V logic rails without level shifters |
| Erase Architecture | 39 sectors: 31 × 64 KB + 8 × 8 KB - allows granular firmware partitioning and field updates |
| Program Time | 10 µs per word - supports high-throughput in-system programming |
| Erase Endurance | 100,000 cycles - validated for long-life industrial firmware storage |
| Interface Standard | Common Flash Interface (CFI) - enables auto-detection and driver portability across Flash vendors |
Pinout & Package
AT49BV163D-70CU-T is available in a 48-lead TSOP-I (Type 1) package, RoHS-compliant and green (Pb/Halide-free). Pin count and layout match industry-standard 48-pin Flash footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A-1 alias on I/O15 in byte mode |
| I/O0–I/O15 | Data I/O (x16) / I/O0–I/O7 + A-1 (x8) | Configurable bus width: BYTE=1 → x16 (I/O0–I/O15 active); BYTE=0 → x8 (I/O0–I/O7 active, I/O15=A-1) |
| CE, OE, WE | Chip/Output/Write Enable | Three independent controls prevent bus contention; standard microprocessor timing compatible |
| RDY/BUSY | Open-drain status output | Active-low during internal operations; supports wired-OR of multiple Flash devices on shared bus |
| RESET | Hardware initialization input | Halts ongoing operation and forces high-Z outputs; required to exit suspend or error states |
| BYTE | Bus width select | Logic-high = word mode (16-bit); logic-low = byte mode (8-bit with LSB address on I/O15) |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Suspend/Resume | Allows interrupting erase of one sector to read/program another - essential for real-time firmware updates without halting system operation |
| Program Suspend/Resume | Enables pausing active word programming to service higher-priority reads - improves responsiveness in multitasked bootloaders |
| Sector Lockdown | Per-sector write protection activated via software command - secures bootloader region against accidental overwrite during field upgrades |
| 128-bit Protection Register | Factory-programmed Block A + user-programmable (and lockable) Block B - supports secure key storage and device authentication |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming) + control-line inhibit (OE low/CE high/WE high blocks writes) - prevents spurious writes during power ramp or noise events |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Bootloader |
|---|---|
Use Scenario: Storing firmware images and parameter tables in programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast 70 ns read access enabling direct execution from Flash; sector lockdown protects startup routines. Use Value: Eliminates need for external SRAM shadowing; 100,000 erase cycles ensure >10-year field life under frequent firmware revision schedules. | Use Scenario: Hosting certified bootloader code in engine control units requiring ISO 26262-compliant safe startup and authenticated firmware loading. IC Role / Device Role / Timing Role: Secure boot memory with 128-bit protection register for cryptographic keys and sector lockdown for immutable boot vector region. Use Value: Prevents unauthorized modification of critical boot code; CFI interface simplifies diagnostic tool integration across vehicle platforms. |
| Medical Device Configuration Archive | Networking Equipment Image Repository |
Use Scenario: Retaining calibrated sensor offsets, user preferences, and regulatory audit logs in portable diagnostic equipment with battery-backed operation. IC Role / Device Role / Timing Role: Low-power (15 µA standby) nonvolatile storage with individual 8 KB sector erase - enables selective update of calibration data without disturbing firmware. Use Value: Reduces update latency and power consumption during field recalibration; suspend/resume avoids interrupting live sensor acquisition. | Use Scenario: Holding multiple firmware images (active, backup, recovery) in enterprise switches and routers for zero-downtime failover and remote upgrades. IC Role / Device Role / Timing Role: Dual-bank capable Flash with 39-sector granularity - isolates image partitions; CFI enables automatic driver selection during OS boot. Use Value: Enables atomic image swaps and rollback; RDY/BUSY pin coordination ensures safe concurrent access across multi-core management processors. |
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 | Same density (16 Mbit), 70 ns access, 3.3 V supply; lacks CFI and 128-bit protection register | No built-in sector lockdown or hardware security - requires external logic or software for boot protection | Preferred where cost sensitivity outweighs security requirements and CFI-driven driver portability is not needed |
| MX29LV160DBTI-70G | 16 Mbit, 70 ns, 3.0–3.6 V; includes CFI but no suspend/resume or 128-bit register | Supports basic sector erase and boot-block configuration, but no runtime erase/program interruption capability | Selected when suspend/resume is unnecessary and legacy Macronix toolchain compatibility is prioritized |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160DBTI-70G, the AT49BV163D-70CU-T uniquely combines CFI, suspend/resume, sector lockdown, and 128-bit protection in a single 48-pin TSOP - making it optimal for safety-critical or field-upgradable embedded systems requiring both flexibility and security.
Availability
AT49BV163D-70CU-T is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, medical diagnostics, networking infrastructure, and secure bootloader implementations requiring stable component supply and long-term lifecycle support.
Supply support for AT49BV163D-70CU-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 acquired Atmel in 2016 and maintains full support for the AT49BV series Flash memories, including documentation, validation, and long-term manufacturing commitments.
The AT49BV163D-70CU-T belongs to Atmel's legacy parallel-interface Flash product line, designed specifically for reliable, secure, in-system programmable code storage in resource-constrained 3V embedded systems.
FAQ
What is the operating voltage range for the AT49BV163D-70CU-T?
The AT49BV163D-70CU-T operates from 2.65 V to 3.6 V, making it compatible with standard 3.3 V logic systems. It includes VCC sense circuitry that inhibits programming if supply drops below ~1.8 V, preventing corruption during brown-out conditions. This single-supply operation eliminates the need for separate VPP programming voltages, simplifying board design and power sequencing for the AT49BV163D-70CU-T.
Does the AT49BV163D-70CU-T support both byte and word data interfaces?
Yes, the AT49BV163D-70CU-T supports configurable x8 or x16 operation via the BYTE pin. When BYTE = 1, I/O0–I/O15 function as a 16-bit data bus; when BYTE = 0, I/O0–I/O7 operate as an 8-bit bus and I/O15 serves as the LSB address (A-1). This dual-mode capability allows the AT49BV163D-70CU-T to interface seamlessly with both 8-bit and 16-bit microcontrollers without external glue logic.
How does sector lockdown work on the AT49BV163D-70CU-T?
Sector lockdown on the AT49BV163D-70CU-T is enabled per sector using a six-bus-cycle command. Once locked, a sector becomes read-only - its contents cannot be erased or programmed until the next power cycle or RESET assertion. Lockdown status is verified by reading address 00002H within the sector; I/O0 = high indicates lockdown active. This feature ensures bootloader integrity in the AT49BV163D-70CU-T while allowing field updates to application code in unprotected sectors.
What status detection methods does the AT49BV163D-70CU-T provide?
The AT49BV163D-70CU-T offers three concurrent status detection mechanisms: READY/BUSY pin (open-drain, active-low), Data Polling (I/O7 toggles/complements during operations), and Toggle Bit (I/O6 toggles). Behavior is configurable via a two-bit register: setting "00" returns to read mode automatically after success; "01" requires explicit Product ID Exit command. All methods are fully supported in both byte and word modes of the AT49BV163D-70CU-T.
Is the AT49BV163D-70CU-T CFI-compliant, and why does that matter?
Yes, the AT49BV163D-70CU-T implements the Common Flash Interface (CFI) standard, accessible via a one-bus-cycle command (write 98h to address 55h). CFI provides standardized register maps describing geometry, timings, commands, and features - enabling generic Flash drivers to auto-configure without hard-coded vendor logic. This simplifies firmware development and ensures second-source flexibility for the AT49BV163D-70CU-T across diverse host platforms.
AT49BV163D-70CU-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-VFBGA, CSPBGA
- 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-CBGA (6x8)
AT49BV163D-70CU-T FAQ
1.How can I place an order for AT49BV163D-70CU-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV163D-70CU-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 AT49BV163D-70CU-T reliable?
The price and inventory of AT49BV163D-70CU-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV163D-70CU-T is usually 5 days.
3.What payment methods are accepted for AT49BV163D-70CU-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV163D-70CU-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV163D-70CU-T?
AT49BV163D-70CU-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV163D-70CU-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 AT49BV163D-70CU-T?
For technical support, including AT49BV163D-70CU-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV163D-70CU-T requirements.
6.How does Aetrix verify that AT49BV163D-70CU-T is sourced from the original manufacturer or authorized distributors?
All AT49BV163D-70CU-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 AT49BV163D-70CU-T meets industry standards.
7.What is the process for return or replacement of AT49BV163D-70CU-T?
All AT49BV163D-70CU-T units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV163D-70CU-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 AT49BV163D-70CU-T part is unused and in its original packaging.
Return procedure for AT49BV163D-70CU-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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