ST92141 STMicroelectronics, ST92141 Datasheet - Page 64

• Manufacturer Part Number: ST92141
• Description: 8/16-bit Mcu For 3-phase Ac Motor Control
• Manufacturer: STMicroelectronics

ST92141 - RESET AND CLOCK CONTROL UNIT (RCCU)
Figure 27. ST92141 Clock Distribution Diagram (settings given for 5MHz crystal & 25MHz lnternal
clock)
64/179
(Max INTCLK/2)
P5.7
Master
Slave
1
SCK
SCK
Oscillator
CK_AF
Quartz
5 MHz
A/D
EFT
N X 138 X INTCLK
pin
Conversion time
SPI
CK_AF
RCCU
N=2,4,16,32
Baud Rate
Generator
1/2
1/N
N=1,4,6,8,10,12,14,16
DIV2=1
0
1
1/16
CLOCK2
LOGIC
N=2,4,8
1/N
1/N
1...8
MX1=0 MX0=0
1/16
1
0
PLL
10
x
(Max INTCLK/4)
DX2=0 DX1=0 DX0=0
EXTCLKx
WFI and LPOWFI=1 and WFI_CKSEL = 1
1/2
WFI
and LPOWFI=1
and WFI_CKSEL=1
or CKAF_SEL=1
XT_DIV16=1
1
25 MHz INTCLK
CSU_CKSEL=1
0
1
0 1
0
1
1/2
1/4
1/4
3-bit Prescaler
1...8
1...256
1...256
EMBEDDED MEMORY
EPROM/FASTROM
RAM
/OTP
CPUCLK
WDG
STIM
CPU
IMC