52 / 246
52 / 246
AC30M1x64/1x32
ABOV Semiconductor
CSCR
Clock Source Control Register
1.5.13
The AC30M1x64/1x32 has multiple clock sources to generate internal operating clocks. Each clock sources can be
controlled by CSCR register.
This register is 8-bit register.
CSCR=0x4000_0040
7
6
5
4
3
2
1
0
SOSCCON
LSICON
HSICON
MOSCCON
00
10
00
00
RW
RW
RW
RW
7
6
SOSCCON
External crystal sub oscillator control
0X
Disable external sub crystal oscillator
10
Enable external sub crystal oscillator
11
Enable external sub crystal oscillator divide by 2
5
4
LSICON
Low speed internal oscillator control
0X
Disable low speed internal oscillator
10
Enable low speed internal oscillator
11
Enable low speed internal oscillator divide by 2
3
2
HSICON
High speed internal oscillator control
0X
Disable high speed internal oscillator
10
Enable high speed internal oscillator
11
Enable high speed internal oscillator divide by 2
1
0
MOSCCON
External crystal main oscillator control
0X
Disable external main crystal oscillator
10
Enable external main crystal oscillator
11
Enable external main crystal oscillator divide by 2
SCCR
System Clock Control Register
1.5.14
Select the system clock source in SCCR, and selected clock source becomes MCLK. Before changing clock, clock sources
have to be alive by CSCR register.
SCCR=0x4000_0044
7
6
5
4
3
2
1
0
MCLKSEL
00
RW
2
0
MCLKSEL
System clock select register
000
LSI (40kHz)
001
SOSC (32.768kHz)
100
HSI (40MHz )
110
MOSC (4MHz ~ 16MHz )
Note) When change MCLKSEL, both clock sources should be alive.
Ex) Both of HSI and MOSC should be alive, otherwise the chip will do malfunction.
Summary of Contents for AC30M1x32
Page 3: ...3 246 ABOV Semiconductor INTRODUCTION SECTION 1 INTRODUCTION ...
Page 4: ...4 246 4 246 AC30M1x64 1x32 ABOV Semiconductor OVERVIEW CHAPTER 1 ...
Page 18: ...18 246 18 246 ABOV Semiconductor AC30M1x64 1x32 CPU CHAPTER 2 ...
Page 22: ...22 246 22 246 ABOV Semiconductor AC30M1x64 1x32 Boot Mode CHAPTER 3 ...
Page 26: ...26 246 26 246 ABOV Semiconductor AC30M1x64 1x32 SECTION 2 PERIPHERALS ...
Page 27: ...27 246 ABOV Semiconductor System Control Unit SCU SYSTEM CONTROL UNIT SCU CHAPTER 1 ...
Page 69: ...69 246 ABOV Semiconductor Port Control Unit PCU PORT CONTROL UNIT PCU CHAPTER 2 ...
Page 85: ...85 246 ABOV Semiconductor General Purpose I O GPIO GENERAL PURPOSE I O GPIO CHAPTER 3 ...
Page 92: ...92 246 92 246 AC30M1x64 1x32 ABOV Semiconductor FLASH MEMORY CONTROLLER CHAPTER 4 ...
Page 105: ...105 246 ABOV Semiconductor Internal SRAM INTERNAL SRAM CHAPTER 5 ...
Page 107: ...107 246 ABOV Semiconductor Watch Dog Timer WATCH DOG TIMER WDT CHAPTER 6 ...
Page 113: ...113 246 ABOV Semiconductor 16 bit Timer 16 BIT TIMER CHAPTER 7 ...
Page 129: ...129 246 ABOV Semiconductor FRT FREE RUN TIMER FRT CHAPTER 8 ...
Page 134: ...134 246 134 246 ABOV Semiconductor AC30M1x64 1x32 FUNCTION DESCRIPTION 8 3 ...
Page 135: ...135 246 UART ABOV Semiconductor UNIVERSAL ASYNCHRONOUS CHAPTER 9 RECEIVER TRANSMITTER UART ...
Page 151: ...151 246 ABOV Semiconductor UART Figure 9 6 Transmit interrupt timing diagram ...
Page 152: ...152 246 152 246 ABOV Semiconductor AC30M1x64 1x32 SERIAL PERIPHERAL INTERFACE SPI CHAPTER 10 ...
Page 164: ...164 246 164 246 ABOV Semiconductor AC30M1x64 1x32 I2 C Interface CHAPTER 11 ...
Page 185: ...185 246 ABOV Semiconductor Motor PWM MOTOR PULSE WIDTH MODULATOR CHAPTER 12 MPWM ...
Page 215: ...215 246 ABOV Semiconductor Divider DIVIDER DIV64 CHAPTER 13 ...
Page 221: ...221 246 ABOV Semiconductor 12 BIT A D Converter 12BIT A D CONVERTER CHAPTER 14 ...
Page 235: ...235 246 ABOV Semiconductor CHARACTERISTIC SECTION 3 CHARACTERISTIC ...
Page 236: ...236 246 236 246 ABOV Semiconductor AC30M1x64 1x32 Electrical Characteristic CHAPTER 1 ...
Page 243: ...243 246 ABOV Semiconductor Package Package CHAPTER 2 ...