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ABOV Semiconductor
AC30M1x64/1x32
FRT.MR
FRT Mode Register
8.2.1
FRT is a 32-bit up counter. It can be used in power down mode when using SUB OSC. The SUB OSC clock is directly
connected to FRT. Timer Control Register is 8-bit register.
FRT.MR=0x4000_0600
7
6
5
4
3
2
1
0
CLKSEL
MCD
OVIE
MIE
0
0
0
0
0
0
0
RW
RW
RW
RW
RW
5
4
CLKSEL
FRT counter clock source control
0
Low Speed Internal Oscillator clock (40kHz)
1
External Oscillator clock divided by 32
2
Sub Oscillator clock
3
Reserved
2
MCD
Counter Match Clear Disable bit
0
Counter Match Clear function is enabled.
Whenever the counter matches FRT.PER, the counter
will be set zero and waiting for MF to be cleared.
1
Counter Match Clear function is disabled.
The counter will keep countering without set zero
1
OVIE
Over Flow Interrupt Enable bit
0
Not effect
1
Interrupt enabled
0
MIE
Match Interrupt Enable bit
0
Not effect
1
Interrupt enabled
FRT.CR
FRT Control Register
8.2.2
FRT Control Register is 8-bit register.
FRT.CR=0x4000_0604
7
6
5
4
3
2
1
0
RREQ
CLR
HOLD
EN
0
0
0
0
0
0
0
0
RW
WO
RW
RW
3
RREQ
FRT Counter read request bit
0
No action
1
Request to read FRTn.CNT
(cleared when CNTACK(FSR[1]) is high)
2
CLR
FRT Counter register clear bit
0
No action
1
Clear the counter
1
HOLD
FRT Counter register hold bit
0
No action
1
Hold the counter
0
EN
FRT enable bit
0
FRT Disabled
1
FRT Enabled
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 ...