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ABOV Semiconductor
System Control Unit - SCU
Power up
MCLK=LSI
(40KHz)
FM.CFG.WAIT=Maximum wait
(Set Flash wait control)
PCC.MR[25:24]=XIN
PCC.MR[27:26]=XOUT
PCC.CR[25:24]=Analog
PCC.CR[27:26]=Analog
Wait for
stabilizing
SCU.SCCR = MOSC
FM.CFG.WAIT=Suitable wait
(Set flash wait control)
END
PCD.MR[5:4]=SXOUT
PCD.MR[7:6]=SXIN
PCD.CR[5:4]=Analog
PCD.CR[7:6]=Analog
Wait for
stabilizing
Wait for
stabilizing
SCU.SCCR = SOSC
SCU.SCCR = HSI
MOSC ?
(
4-16MHz
)
SOSC ?
(
32.768KHz
)
HSI ?
(
40MHz)
SCU.CSCR=0xXX
(Disable unused clock source)
SCU.CSCR= Enable All Clock
Y
Y
Y
N
N
N
Figure 1.3 Clock change procedure
When you speed up the system clock until max operating frequency, you should check flash wait control configuration.
Flash read access time is one of limitation factor for the performance. The wait control recommendation is provided in
Table 1.2.
Table 1.2 Flash wait control recommendation
FM.CFG.WAIT
FLASH Access Wait
Available Max System clock frequency
00
0 clock wait
~20MHz
01
1 clock wait
~40MHz
10
2 clock wait
~40MHz
Содержание AC30M1x32
Страница 3: ...3 246 ABOV Semiconductor INTRODUCTION SECTION 1 INTRODUCTION ...
Страница 4: ...4 246 4 246 AC30M1x64 1x32 ABOV Semiconductor OVERVIEW CHAPTER 1 ...
Страница 18: ...18 246 18 246 ABOV Semiconductor AC30M1x64 1x32 CPU CHAPTER 2 ...
Страница 22: ...22 246 22 246 ABOV Semiconductor AC30M1x64 1x32 Boot Mode CHAPTER 3 ...
Страница 26: ...26 246 26 246 ABOV Semiconductor AC30M1x64 1x32 SECTION 2 PERIPHERALS ...
Страница 27: ...27 246 ABOV Semiconductor System Control Unit SCU SYSTEM CONTROL UNIT SCU CHAPTER 1 ...
Страница 69: ...69 246 ABOV Semiconductor Port Control Unit PCU PORT CONTROL UNIT PCU CHAPTER 2 ...
Страница 85: ...85 246 ABOV Semiconductor General Purpose I O GPIO GENERAL PURPOSE I O GPIO CHAPTER 3 ...
Страница 92: ...92 246 92 246 AC30M1x64 1x32 ABOV Semiconductor FLASH MEMORY CONTROLLER CHAPTER 4 ...
Страница 105: ...105 246 ABOV Semiconductor Internal SRAM INTERNAL SRAM CHAPTER 5 ...
Страница 107: ...107 246 ABOV Semiconductor Watch Dog Timer WATCH DOG TIMER WDT CHAPTER 6 ...
Страница 113: ...113 246 ABOV Semiconductor 16 bit Timer 16 BIT TIMER CHAPTER 7 ...
Страница 128: ...128 246 128 246 ABOV Semiconductor AC30M1x64 1x32 Figure 7 9 ADC trigger function timing diagram ...
Страница 129: ...129 246 ABOV Semiconductor FRT FREE RUN TIMER FRT CHAPTER 8 ...
Страница 134: ...134 246 134 246 ABOV Semiconductor AC30M1x64 1x32 FUNCTION DESCRIPTION 8 3 ...
Страница 135: ...135 246 UART ABOV Semiconductor UNIVERSAL ASYNCHRONOUS CHAPTER 9 RECEIVER TRANSMITTER UART ...
Страница 151: ...151 246 ABOV Semiconductor UART Figure 9 6 Transmit interrupt timing diagram ...
Страница 152: ...152 246 152 246 ABOV Semiconductor AC30M1x64 1x32 SERIAL PERIPHERAL INTERFACE SPI CHAPTER 10 ...
Страница 164: ...164 246 164 246 ABOV Semiconductor AC30M1x64 1x32 I2 C Interface CHAPTER 11 ...
Страница 185: ...185 246 ABOV Semiconductor Motor PWM MOTOR PULSE WIDTH MODULATOR CHAPTER 12 MPWM ...
Страница 191: ...191 246 ABOV Semiconductor Motor PWM 0 1 WH CONTROL WH OUTPUT OLR WHL POLWH Figure 12 2 Polarity Control Block ...
Страница 215: ...215 246 ABOV Semiconductor Divider DIVIDER DIV64 CHAPTER 13 ...
Страница 221: ...221 246 ABOV Semiconductor 12 BIT A D Converter 12BIT A D CONVERTER CHAPTER 14 ...
Страница 235: ...235 246 ABOV Semiconductor CHARACTERISTIC SECTION 3 CHARACTERISTIC ...
Страница 236: ...236 246 236 246 ABOV Semiconductor AC30M1x64 1x32 Electrical Characteristic CHAPTER 1 ...
Страница 243: ...243 246 ABOV Semiconductor Package Package CHAPTER 2 ...
Страница 244: ...244 246 244 246 ABOV Semiconductor AC30M1x64 1x32 LQFP 48 Package dimension 2 1 Figure 2 1 Package dimension LQFP 48 ...
Страница 245: ...245 246 ABOV Semiconductor Package LQFP 32 Package dimension 2 2 Figure 2 2 Package dimension LQFP 32 ...
Страница 246: ...246 246 246 246 ABOV Semiconductor AC30M1x64 1x32 QFN 32 Package dimension 2 3 Figure 2 3 Package dimension QFN 32 ...