SONIX SN32F268 - Clock Generation Block Diagram

SN32F260 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD Page 13 Version 1.5
1.3 CLOCK GENERATION BLOCK DIAGRAM
CLKOUT
IHRC
48MHz
ILRC
32KHz
IHRC
ILRC
SYSCLK
SYSCLKSEL
CLKOUTSEL
WDTCLKSEL
WDT
Clock Prescaler
/1, 2, 4, 8, 16, 32
WDT_PCLK
HCLK
WDT
register block
WDT
clock source
AHB clock for WDT
AHB clock for AHB to APB bridge, to AHB
matrix, to Cortex-M0 FCLK, HCLK, and
System Timer, to SYS, and to PMU
AHB clock for GPIOn
GPIOnCLKEN
n=0,1,2,3
GPIOn block
AHB
Prescaler
/1,2,4,…,128
SPIn_PCLK
AHB clock for SPIn
SPInCLKEN
n=0
SPIn
register block
SPIn
clock source
CT16Bn_PCLK
AHB clock for CT16Bn
CT16BnCLKEN
n=0,1
CT16Bn
register block
CT16Bn
clock source
AHB clock for SRAM
SRAM block
AHB clock for FLASH
FLASH block
CLKOUT
Prescaler
/1,2,4,…,128
WDTCLKEN
HCLK
HCLK
IHRC
ILRC
AHBCP
USBCLKEN
USB
register block
USB
clock source
AHB clock for USB
USB_PCLK = 48MHz
I2Cn_PCLK
AHB clock for I2Cn
I2CnCLKEN
n=0
I2Cn
register block
I2Cn
clock source