JAJSOW2B February 2022 – August 2023 CC2651R3SIPA
PRODUCTION DATA
The CC2651R3SIPA device has several internal system clocks.
The 48 MHz SCLK_HF is used as the main system (MCU and peripherals) clock. This can be driven by the internal 48 MHz RC Oscillator (RCOSC_HF) or in-package 48 MHz crystal (XOSC_HF). Note that the radio operation runs off the included, in-package 48 MHz crystal within the module.
SCLK_LF is the 32.768 kHz internal low-frequency system clock. It can be used for the RTC and to synchronize the radio timer before or after Standby power mode. SCLK_LF can be driven by the internal 32.8 kHz RC Oscillator (RCOSC_LF), a 32.768 kHz watch-type crystal, or a clock input on any digital IO.
When using a crystal or the internal RC oscillator, the device can output the 32 kHz SCLK_LF signal to other devices, thereby reducing the overall system cost.