了解無線通訊 (Sub-GHz RF SoC) 更多技術

Learn about the newly introduced wireless mesh networking

Wireless SoC for Ultra Low Power IoT Applications

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General Description

The VC7300 series is a highly integrated wireless SoC which is a perfect fit to IoT networking and sensing applications. It integrates Cortex-M0 MCU, 256 KB Flash, 32 KB SRAM, sub-GHz radio and other functionalities such as UART/SPI/I2C, WDT and Timer, etc. The VC7300 series has varieties of power saving modes which can be leveraged to build ultra-low power IoT networks with powerful computing. The embedded sub-GHz RF transceiver features low power consumption, long-range and robust wireless links, being able to reject large nearby interfering RF signals.

MCU System

 Operating Voltage: 2.0 V ~ 3.6 V.

 Operating Current:

  • Normal mode: 3 mA @6.5536 MHz
  • Idle mode: 1 mA @6.5536 MHz
  • Sleep mode (LCD active): < 10 uA
  • Sleep mode (LCD inactive): < 2 uA
  • Deep sleep mode: < 1 uA

 Package:

  • QFN64

 Operation Temperature: -40~+85 °C

 Storage Temperature: -40~+125 °C

 MCU

  • 32 bits Cortex M0 with maximum 26.2144 MHz operation speed.
  • Single cycle multiplier.
  • Standard 2-wires SWD debug interface.
  • 256KB Flash with write protect, support both IAP and ISP.
  • 32K bytes SRAM with parity check and data retention under sleep mode.
  • 256 bytes SRAM with data retention under deep-sleep mode.
  • Support abort exception detection including Flash check-sum error, SRAM parity error, memory address error and memory align error.

 Interface Controller

  • 4 UART controllers with parity check.
  • Each IR channel can be coupled with IR carrier for IR transmission.
  • 1 SPI master/slave controllers.
  • 1 I2C master/slave controller.
  • 4 32 bits timers.
  • 4 16 bits PWM timers.
  • 4 channels DMA controller.
  • 128/192/256 bits AES CODEC.
  • ECC encrypt/decrypt accelerated engine.
  • Watch dog timers with programmable period.
  • Support multiple wake-up sources under each mode.
  • Maximum 35 GPIOs.
  • 6 GPIOs can be external interrupt and wakeup sources under all modes.

 Analog Controller

  • 12 bits ADC with 10 Ksps and 6 external inputs.
  • ADC supports manual sample mode or auto sample mode.
  • 1 comparator with single end input or differential input.
  • Embedded 32 KHz and 6.5 MHz RCO.
  • Embedded 2 PLLs.
  • Support external 32 KHz crystal.
  • Support crystal absent detect for 32KHz.
  • Each clock can be selected to be system clock.
  • Support digital clock divider up-to 1/256.
  • Support low voltage detection with programmable level.
  • Support power-on reset for both IO voltage and core voltage.
  • Support standalone RTC battery input.
  • Support 1 ppm RTC auto-calibration under deep-sleep mode.

Radio

 Support IEEE 802.15.4g/Wi-SUN PHY

 Support wireless M-Bus

 Frequency bands: 315, 433, 470-510, 779-787, 868, 915 and 920 MHz

 High selectivity and blocking performance

  • Adjacent channel rejection: 42 dB
  • Blocking performance: > 70 dB

 Receiver sensitivity in 802.15.4g mode

  • -106 dBm at 50 kbps

 Maximum data rate: 300 kbps

 Maximum transmit output power

  • +20 dBm; +13 dBm (Programmable)

 Automatic output power ramping

 Current consumption

  • Shut-down: 70 nA
  • Sleep mode: 0.8 µA
  • Receive at 433 MHz: 15 mA
  • TX mode at 868 MHz: 105 mA at +20 dBm

 Modulation schemes: OOK, (G)FSK, 4(G)FSK and GMSK

 Antenna diversity support

 Automatic RX wake-up for low power listen

 Fast wake-up and AGC for low-power listen

 Functions for communication robustness

  • RF channel hopping
  • Retransmission
  • Auto-acknowledgement

 Digital RSSI and clear channel assessment for CSMA and listen-before-talk systems

 Hardware-based user identification listen to eliminate false wake-up

 Higher layer protocol support

  • IPv6 network layer protocol
  • 802.15.4e compliant 6LoWPAN adaptation layer with optimized network formation and mesh routing function
  • Ambient temperature range: -40 °C ~ +85 °C


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