JAJSSK0 December 2023 CC2340R5-Q1
PRODUCTION DATA
The CC2340R5-Q1 device has the following internal system clocks.
The 48 MHz HFCLK is used as the main system (MCU and peripherals) clock. This is driven by the internal 48 MHz RC Oscillator (HFOSC), which can track its accuracy against an external 48 MHz crystal (HFXT). Radio operation requires an external 48 MHz crystal.
The 32.768 kHz LFCLK is used as the internal low-frequency system clock. It is used for the RTC, the watchdog timer (if enabled in standby power mode), and to synchronize the radio timer before or after Standby power mode. LFCLK can be driven by the internal 32.8 kHz RC Oscillator (LFOSC), a 32.768 kHz watch-type crystal, or clock input in LFXT bypass mode. When using a crystal or the internal RC oscillator, the device can output the 32 kHz LFCLK signal to other devices, thereby reducing the overall system cost.