UPSD3422_06 Datasheet, PDF (61/293 Pages) STMicroelectronics – Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic

uPSD34xx
MCU clock generation
Figure 14. Clock Generation Logic
PCON[1]: PD,
Power-Down Mode
CCON[2:0],
Clock Pre-Scaler Select
PCON[0]: IDL,
Idle Mode
XTAL1
(fOSC)
XTAL1 (default)
3
0
Q ^{XTAL1 /2}
Q ^{XTAL1 /4}
Q ^{XTAL1 /8}
Q ^{XTAL1 /16}
Q ^{XTAL1 /32}
Q ^{XTAL1 /1024}
Q ^{XTAL1 /2048}
1
2_M
3U
4X
5
6
7
MCU_CLK (fMCU)
(to: 8032, WDT)
Clock Divider
PERIPH_CLK (fOSC)
(to: TIMER0/1/2, UART0/1, PCA0/1, SPI, I2C, ADC)
PCON[1]
CCON0[6]
CLK
PLL
EN
USB_CLK
AI10433b
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