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Renesas DA14681-01000A92
- Part No.:
- DA14681-01000A92
- Manufacturer:
- Renesas
- Category:
- RF Transceiver ICs
- Package:
- 60-VQFN Dual Rows, Exposed Pad
- Datasheet:
-
DA14681-01000A92.pdf
- Description:
- IC RF TXRX+MCU BLE 60AQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,945
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Product details
Overview
DA14681-01000A92 from Dialog Semiconductor is a Bluetooth 4.2-compliant SoC integrating an ARM Cortex-M0 processor (up to 96 MHz, 84 DMIPS), 128 kB Data SRAM, 64 kB OTP, dedicated hardware crypto engine (AES-256, SHA-512, ECC), and integrated PMU with Li-ion charger and fuel gauge - designed for ultra-low-power rechargeable wearables and smart home edge nodes.
For engineers reviewing the DA14681-01000A92 datasheet, DA14681-01000A92 pinout, DA14681-01000A92 application, or DA14681-01000A92 equivalent, key selection considerations include WL-CSP53 package footprint (3.4 × 3.0 mm), 37 GPIOs in AQFN60 vs. 21 in WL-CSP53, Bluetooth 4.2 RF performance (–93 dBm sensitivity, 0 dBm output), FlexPower dynamic clock scaling (32 kHz–96 MHz), and USB FS device interface with charge detection.
Technical Context
The DA14681-01000A92 implements a dual-domain power architecture with independent RF and application processor domains, enabling sub-1 μA deep-sleep current while maintaining Bluetooth LE advertising readiness. Its hardware sensor hub offloads motion processing from the Cortex-M0 core, supporting always-on 3-axis quadrature decoding and PDM microphone input with hardware sample-rate conversion.
RF subsystem includes an integrated balun and 50 Ω single-wire antenna interface, eliminating external matching components. The dedicated crypto engine executes AES-256 encryption/decryption in <10 μs per 16-byte block and supports true random number generation for secure key derivation - critical for HomeKit-compliant pairing and OTA firmware authentication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bluetooth Standard | Complies fully with Bluetooth Core Specification v4.2 - enables LE Secure Connections, Data Length Extension, and Privacy 1.2 for robust pairing and encrypted over-the-air updates. |
| CPU Core | ARM Cortex-M0 @ up to 96 MHz, 84 DMIPS, 30 μA/MHz - delivers real-time sensor fusion and BLE protocol stack execution with dynamic voltage/frequency scaling. |
| Memory | 64 kB OTP + 128 kB Data SRAM + 16 kB Cache SRAM + 128 kB ROM - supports secure boot, OTA update staging, and low-latency sensor buffer management without external memory. |
| RF Performance | –93 dBm RX sensitivity, 0 dBm TX output, 93 dB link budget - achieves reliable 30+ meter range in wearable enclosures with integrated balun and single-wire antenna match. |
| Power Management | Integrated buck DC-DC (1.7–4.75 V), USB charge detection, programmable Li-ion charge curves, and ±2% fuel gauge accuracy - enables direct USB-rechargeable battery operation with no external PMIC. |
| Security Engine | Dedicated hardware accelerator for AES-256, SHA-512, ECC, and TRNG - performs end-to-end encryption of BLE ATT packets and firmware images without CPU overhead or timing side-channel leakage. |
| Analog Peripherals | 8-channel 10-bit ADC (11.5 ENOB), PDM interface (2 mics/speakers), I²S/PCM (8-channel), IR PWM, temperature sensor - supports voice wake-up, biometric sensing, and ambient environment monitoring. |
Pinout & Package
DA14681-01000A92 is available in WL-CSP53 (3.4 × 3.0 mm, 0.4 mm pitch) and AQFN60 (6 × 6 mm, 0.4 mm pitch) packages. This part number corresponds to the WL-CSP53 variant, featuring 21 configurable GPIOs, 3 dedicated power supply pins for external peripherals, and integrated RF matching eliminating discrete balun requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO_1 / VDDIO_2 / VDDIO_3 | IO Power Supply | Independent 1.8 V / 3.3 V programmable rails - allows mixed-voltage interfacing with sensors, displays, and legacy peripherals without level shifters. |
| P0_0 – P0_20 | General Purpose I/O | 21 pins with configurable pull-up/down, drive strength, and voltage levels - supports keyboard scan matrix, IR remote control, and capacitive touch sensing in compact wearables. |
| ANT | RF Antenna Interface | 50 Ω single-ended RF output with integrated balun - connects directly to PCB trace or chip antenna, eliminating external matching network and saving >3 mm² board area. |
| VBUS_DET | USB VBUS Detection | Dedicated input for USB presence sensing - triggers automatic charger enable and battery state-of-charge recalibration during cable insertion. |
| TEMP_SENSE | Die Temperature Sensor | On-die analog output scaled to 1.2 mV/°C - enables thermal throttling of CPU frequency and battery charge rate adjustment based on real-time junction temperature. |
Key Features
| Feature | Design Value |
|---|---|
| FlexPower Clock Scaling | Software-controlled CPU frequency from 32 kHz to 96 MHz - reduces active current by 3.1× at 32 kHz vs. 96 MHz while maintaining BLE connection timing integrity. |
| Hardware Sensor Hub | Offloads 3-axis quadrature decoding and PDM mic sampling - cuts Cortex-M0 runtime by 42% during continuous motion tracking in fitness bands. |
| USB Full-Speed Device | Integrated PHY with VBUS detection and charge negotiation - enables firmware updates and battery diagnostics over standard micro-USB without external transceiver or charge controller IC. |
| Secure Boot & OTA | ROM-based bootloader validates signed firmware images using ECC-256 before execution - prevents unauthorized code injection during wireless updates in HomeKit-certified accessories. |
| Multi-Battery Support | Programmable charge profiles for Li-Po, Li-Ion, coin cell, NiMH, and alkaline - eliminates BOM changes when migrating from prototype (coin cell) to production (Li-Po) power sources. |
Applications
| Fitness Tracker | Smart Home Sensor Node |
|---|---|
Use Scenario: Continuous heart-rate and step-count monitoring with BLE advertisement every 200 ms and motion-triggered high-frequency sampling. IC Role / Device Role / Timing Role: Primary system-on-chip managing sensor fusion, BLE link layer, and adaptive power gating - maintains sub-10 μA average current during idle periods. Use Value: 128 kB Data SRAM buffers raw accelerometer data for on-chip FFT analysis; hardware crypto secures health data transmission to iOS HealthKit. | Use Scenario: Battery-powered door/window contact sensor with tamper detection, temperature logging, and periodic BLE broadcast to Apple HomeKit hub. IC Role / Device Role / Timing Role: Single-chip solution executing HomeKit Accessory Protocol (HAP), BLE GAP/GATT, and low-power sleep/wake scheduling - achieves 2-year battery life on CR2032. Use Value: Integrated fuel gauge monitors battery depletion trend; USB FS interface enables field firmware patching without battery removal. |
| Voice-Controlled Remote | Rechargeable Wireless Keyboard |
Use Scenario: Near-field voice command capture using dual PDM mics, local keyword spotting, and BLE HID report transmission to TV or set-top box. IC Role / Device Role / Timing Role: Real-time audio front-end processor with hardware PDM decimation and I²S interface to external DSP - synchronizes mic sampling with BLE advertising intervals. Use Value: Dedicated PDM interface handles 16 kHz sampling with 2× hardware oversampling; 8-channel ADC measures button press force for tactile feedback calibration. | Use Scenario: Low-profile mechanical keyboard with RGB LED backlighting, USB recharging, and BLE HID reporting to PC/tablet. IC Role / Device Role / Timing Role: System controller managing keystroke scanning, white LED driver dimming (3 channels), and simultaneous USB charging/BLE communication - prevents brownout during peak current events. Use Value: Integrated buck converter supplies stable 3.3 V to MCU and LEDs; three independent power rails isolate noisy LED drivers from sensitive RF section. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Bluetooth LE SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Nordic nRF52833 | ARM Cortex-M4F core, 64 MHz, 256 kB Flash, no integrated charger or fuel gauge - requires external PMIC for Li-ion charging. | Higher compute throughput for complex BLE mesh routing; lacks native USB FS device interface and battery management peripherals. | Prefer when application demands floating-point math or mesh networking, and external battery management is acceptable. |
| Texas Instruments CC2642R | ARM Cortex-M4F, 48 MHz, 352 kB Flash, integrated RF balun but no hardware crypto engine - relies on software AES implementation. | Better RF coexistence handling for multi-radio environments; no OTP memory or dedicated sensor hub acceleration. | Choose for industrial gateways requiring concurrent BLE + Zigbee operation, where software crypto latency is tolerable. |
Compared with nRF52833 and CC2642R, DA14681-01000A92 uniquely integrates USB FS device + Li-ion charger + fuel gauge + hardware crypto in WL-CSP53, reducing BOM count by ≥4 components and enabling certified HomeKit accessories without external security elements.
Availability
DA14681-01000A92 is available at Aetrix Electronics and suitable for wearable electronics, smart home sensors, and rechargeable human-interface devices requiring stable component supply, long-term lifecycle support, and certified Bluetooth LE interoperability.
Supply support for DA14681-01000A92 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
Dialog Semiconductor is a UK-based fabless semiconductor company specializing in highly integrated mixed-signal ICs for power management, audio, and connectivity solutions.
The SmartBond DA1468x product line was engineered specifically for battery-constrained IoT endpoints - prioritizing sub-microamp deep-sleep current, integrated battery charging, and hardware-accelerated security to eliminate external components in wearables and HomeKit accessories.
FAQ
What Bluetooth version does DA14681-01000A92 support?
DA14681-01000A92 supports the full Bluetooth Core Specification v4.2, including LE Secure Connections, Data Length Extension, and Privacy 1.2. It does not support Bluetooth 5.0 or later features such as 2 Mbps PHY or Long Range mode. The DA14681-01000A92 implements all mandatory and optional v4.2 features required for Apple HomeKit certification and Android BLE peripheral compatibility.
Does DA14681-01000A92 include an integrated battery charger?
Yes, DA14681-01000A92 integrates a programmable linear battery charger supporting Li-Po, Li-Ion, NiMH, alkaline, and coin-cell chemistries. It features USB VBUS detection, adjustable charge current (up to 500 mA), and a high-accuracy fuel gauge with ±2% state-of-charge estimation - all implemented without external components. This functionality is embedded in the DA14681-01000A92's PMU block.
What is the package type for DA14681-01000A92?
DA14681-01000A92 uses the WL-CSP53 package: a 3.4 mm × 3.0 mm wafer-level chip-scale package with 53 bumps (21 active I/Os). This differs from the AQFN60 variant of the DA14681 family. The WL-CSP53 footprint enables ultra-compact designs typical of earbuds, fitness bands, and button-sized smart home sensors - and is the specific package assigned to the DA14681-01000A92 orderable part number.
Can DA14681-01000A92 execute code from external flash memory?
No, DA14681-01000A92 does not support external flash execution. It executes code exclusively from internal 64 kB OTP and 128 kB ROM. Unlike the DA14680 variant - which includes 8 Mb on-chip Flash - the DA14681-01000A92 relies on OTP for firmware storage, making it suitable for cost-sensitive, fixed-function applications where field updates are not required. DA14681-01000A92 firmware must be programmed during manufacturing.
What security features are implemented in hardware on DA14681-01000A92?
DA14681-01000A92 includes a dedicated hardware crypto engine supporting AES-256 encryption/decryption, SHA-512 hashing, ECC-256 key exchange, and a true random number generator (TRNG). These functions operate independently of the Cortex-M0 core, enabling secure BLE pairing, encrypted OTA firmware updates, and HomeKit-compliant key derivation - all without exposing cryptographic keys to software or increasing CPU load. This hardware security is integral to the DA14681-01000A92 silicon design.
DA14681-01000A92 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- SmartBond™
- Package/Case:
- 60-VQFN Dual Rows, Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth
- Protocol:
- Bluetooth v4.2
- Modulation:
- -
- Frequency:
- 2.4GHz
- Data Rate (Max):
- -
- Power - Output:
- 0dBm
- Sensitivity:
- -94dBm
- Memory Size:
- 64kB OTP, 128kB ROM, 144kB SRAM
- Serial Interfaces:
- I2C, I2S, PCM, SPI, UART, USB
- GPIO:
- -
- Voltage - Supply:
- 1.7V ~ 4.5V
- Current - Receiving:
- -
- Current - Transmitting:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 60-AQFN (6x6)
DA14681-01000A92 FAQ
1.How can I place an order for DA14681-01000A92 through Aetrix?
Please submit a Request for Quotation (RFQ) for DA14681-01000A92 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 DA14681-01000A92 reliable?
The price and inventory of DA14681-01000A92 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DA14681-01000A92 is usually 5 days.
3.What payment methods are accepted for DA14681-01000A92?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DA14681-01000A92 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DA14681-01000A92?
DA14681-01000A92 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DA14681-01000A92 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 DA14681-01000A92?
For technical support, including DA14681-01000A92 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DA14681-01000A92 requirements.
6.How does Aetrix verify that DA14681-01000A92 is sourced from the original manufacturer or authorized distributors?
All DA14681-01000A92 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 DA14681-01000A92 meets industry standards.
7.What is the process for return or replacement of DA14681-01000A92?
All DA14681-01000A92 units undergo pre-shipment inspection (PSI). If there is an issue with DA14681-01000A92, 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 DA14681-01000A92 part is unused and in its original packaging.
Return procedure for DA14681-01000A92:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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