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Microchip Technology AT49BV163D-70TU
- Part No.:
- AT49BV163D-70TU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV163D-70TU.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,895
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Product details
Overview
AT49BV163D-70TU from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) single-supply Flash memory IC with 70 ns read access time, sector erase architecture (31 × 64 KB + 8 × 8 KB), and support for in-system programming. It operates from 2.65V to 3.6V and features Erase/Program Suspend, CFI compliance, and 128-bit protection register - used in embedded boot code storage and firmware update modules.
For engineers reviewing the AT49BV163D-70TU datasheet, AT49BV163D-70TU pinout, AT49BV163D-70TU application, or AT49BV163D-70TU equivalent, key selection considerations include sector lockdown capability, TSOP-48/CBGA-48 package compatibility, byte/word mode configuration via BYTE pin, and READY/BUSY or Data Polling status monitoring for real-time operation control.
Technical Context
The AT49BV163D-70TU implements a command-based Flash architecture with dual-mode data interface (x8/x16), enabling flexible integration into 8-bit and 16-bit microcontroller buses. Its internal write state machine handles embedded program/erase timing without external clocks, and supports six-byte command sequences for chip/sector operations.
It integrates hardware data protection (VCC sense, control-line inhibit), configurable status reporting (via I/O2/I/O5/I/O6/I/O7 and RDY/BUSY), and a programmable configuration register that determines post-operation return behavior (auto-read vs. Product ID Exit required). Sector Lockdown and 128-bit Protection Register provide secure boot and user-defined security partitioning.
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 from flash in high-speed embedded systems |
| Supply Voltage | 2.65 V to 3.6 V - compatible with 3.3 V logic domains and eliminates need for dual supplies |
| Erase Architecture | 39 sectors: 31 × 64 KB + 8 × 8 KB - allows granular firmware updates without full chip erase |
| Program/Erase End Detection | RDY/BUSY pin, Data Polling (I/O7), Toggle Bit (I/O6) - provides multiple synchronous/asynchronous status options |
| Endurance | ≥100,000 erase cycles per sector - ensures long-term reliability in field-upgradeable devices |
| Common Flash Interface | CFI-compliant - enables automatic driver generation and vendor-agnostic flash management |
| Package Options | 48-lead TSOP-I and 48-ball CBGA - supports both surface-mount density and thermal performance requirements |
Pinout & Package
AT49BV163D-70TU is available in 48-lead TSOP-I (Type 1) and 48-ball CBGA packages. Both packages support identical pin functions and signal mapping, with mechanical and thermal differences optimized for board-level integration.
| 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 + I/O15(A-1) (x8) | Configurable 8-bit or 16-bit data interface; BYTE pin selects mode |
| CE, OE, WE | Chip Enable, Output Enable, Write Enable | Standard three-control asynchronous interface preventing bus contention during read/write |
| RDY/BUSY | Open-drain status output | Active-low indicates ongoing program/erase; supports wired-OR for multi-device monitoring |
| RESET | Hardware initialization input | Halts current operation and forces high-impedance outputs; required to exit suspend or error states |
| 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) |
| NC | No-connect | Unbonded pins - must be left floating or tied to ground per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Erase/Program Suspend & Resume | Enables concurrent read/program from non-suspending sectors during background erase - critical for real-time firmware patching |
| Sector Lockdown | Per-sector write-protection activated via command; prevents accidental overwrite of boot code while allowing dynamic update of application partitions |
| 128-bit Protection Register | Factory-programmed 64-bit block A + user-programmable/lockable block B - supports device-specific authentication and secure key storage |
| Single-Pulse Program Mode | Reduces programming overhead by replacing 4-cycle command sequence with single WE pulse after entry - improves host CPU efficiency |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming) and control-line gating (OE low/CE high/WE high blocks writes) - prevents corruption during power ramp or noise events |
Applications
| Boot Code Storage | Firmware Update Module |
|---|---|
Use Scenario: Storing primary bootloader and secure startup routines in industrial PLCs and medical imaging controllers. IC Role / Device Role / Timing Role: Non-volatile boot memory mapped to processor reset vector; accessed at power-on with 70 ns latency. Use Value: Sector Lockdown ensures boot integrity across 100,000+ field updates; CFI enables automated driver selection during system initialization. | Use Scenario: Field-upgradable firmware storage in network routers and telecom baseband units. IC Role / Device Role / Timing Role: Dual-bank capable Flash supporting atomic swap between active/inactive firmware images. Use Value: Erase Suspend allows background image validation while servicing live traffic; 39-sector granularity minimizes downtime during partial reflash. |
| Secure Configuration Storage | Embedded HMI Display Controller |
Use Scenario: Storing calibrated sensor offsets and cryptographic keys in automotive ADAS ECUs. IC Role / Device Role / Timing Role: Protected register space (block B) stores tamper-resistant calibration data; accessed only during factory setup or diagnostic mode. Use Value: 128-bit register with lockable user block prevents runtime modification; hardware protection prevents glitch-based key extraction. | Use Scenario: Graphics resource storage (fonts, icons, UI bitmaps) in smart home thermostats and HVAC interfaces. IC Role / Device Role / Timing Role: x16 interface delivers burst pixel data to display controller; RDY/BUSY synchronizes DMA transfers during screen refresh. Use Value: 70 ns access enables real-time rendering without frame buffering; low 15 µA standby current extends battery life in wireless HMI nodes. |
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, but uses different command set and lacks CFI; no Erase Suspend | Requires custom driver adaptation; unsuitable where suspend/resume or CFI auto-detection is required | Select only when legacy SST39VF ecosystem is already deployed and suspend functionality is unused |
| MX29LV160DBTI-70G | 16 Mbit, 70 ns, top-boot configuration, CFI-compliant, but no 128-bit protection register or Single-Pulse Program mode | Lacks secure boot features and advanced programming acceleration; limited sector lockdown flexibility | Prefer for cost-sensitive designs where basic Flash functionality suffices and security extensions are handled externally |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160DBTI-70G, the AT49BV163D-70TU uniquely combines CFI compliance, Erase/Program Suspend, and integrated 128-bit security - making it the only option among the three suitable for certified secure boot implementations requiring both real-time operation and tamper resistance.
Availability
AT49BV163D-70TU is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and automotive infotainment head units requiring stable component supply and long-term lifecycle support.
Supply support for AT49BV163D-70TU 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 its legacy Flash portfolio, including robust documentation, longevity commitments, and qualified manufacturing lines.
The AT49BV163D-70TU belongs to Atmel's BV-series parallel Flash family, designed specifically for reliable, in-system programmable boot memory in resource-constrained embedded systems with stringent security and real-time responsiveness requirements.
FAQ
What is the difference between AT49BV163D-70TU and AT49BV163DT?
The AT49BV163D-70TU and AT49BV163DT share identical electrical specifications and command sets but differ in sector organization: AT49BV163D-70TU uses bottom-boot configuration (smaller sectors at lowest addresses), while AT49BV163DT uses top-boot (smaller sectors at highest addresses). This affects boot code placement and upgrade sequencing - AT49BV163D-70TU is preferred when boot loader resides in lower memory regions. Both support the same 70 ns access and TSOP/CBGA packaging.
Does AT49BV163D-70TU support both x8 and x16 data bus widths?
Yes, AT49BV163D-70TU 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 LSB address input (A-1). This dual-mode capability allows seamless integration with 8-bit microcontrollers or 16-bit DSPs without external glue logic.
How does the Erase Suspend feature work in AT49BV163D-70TU?
The AT49BV163D-70TU supports Erase Suspend via the B0h command, halting an ongoing sector or chip erase within 15 µs. Once suspended, the device permits reads or writes to any non-erasing sector. Resuming requires the 30h command. This enables real-time interrupt handling - for example, a network stack can service packets while background firmware erase proceeds - a capability not available in standard Flash devices and critical for deterministic embedded response.
Can AT49BV163D-70TU be used without external pull-up resistors on control lines?
AT49BV163D-70TU does not integrate internal pull-ups on CE, OE, or WE; external pull-up resistors are required for reliable read-mode initialization at power-up. The device powers on in read mode only if CE and OE are asserted low and WE is high - missing or weak pull-ups may cause bus contention or undefined output states. Microchip recommends 4.7 kΩ pull-ups to VCC for all control inputs in production designs using AT49BV163D-70TU.
Is the 128-bit Protection Register in AT49BV163D-70TU field-programmable?
Yes, the 128-bit Protection Register in AT49BV163D-70TU consists of two 64-bit blocks: Block A is factory-programmed and immutable; Block B is fully user-programmable via the Program Protection Register command and can be permanently locked using the Lock Protection Register command. Once locked, Block B cannot be rewritten - even after power cycles - ensuring persistent storage of cryptographic keys or calibration data. Reading requires Product ID Entry followed by address access, as specified in the AT49BV163D-70TU datasheet.
AT49BV163D-70TU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- 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:
- 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
AT49BV163D-70TU FAQ
1.How can I place an order for AT49BV163D-70TU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV163D-70TU 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-70TU reliable?
The price and inventory of AT49BV163D-70TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV163D-70TU is usually 5 days.
3.What payment methods are accepted for AT49BV163D-70TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV163D-70TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV163D-70TU?
AT49BV163D-70TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV163D-70TU 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-70TU?
For technical support, including AT49BV163D-70TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV163D-70TU requirements.
6.How does Aetrix verify that AT49BV163D-70TU is sourced from the original manufacturer or authorized distributors?
All AT49BV163D-70TU 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-70TU meets industry standards.
7.What is the process for return or replacement of AT49BV163D-70TU?
All AT49BV163D-70TU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV163D-70TU, 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-70TU part is unused and in its original packaging.
Return procedure for AT49BV163D-70TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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