11.3.4 Register Map ............................................................................................................................................. 91
11.3.5 Watch Dog Timer Register Description ..................................................................................................... 91
11.3.6 Register Description for Watch Dog Timer ................................................................................................ 92
11.4 Watch Timer ...................................................................................................................................................... 93
11.4.1 Overview .................................................................................................................................................... 93
11.4.2 Block Diagram ........................................................................................................................................... 93
11.4.3 Register Map ............................................................................................................................................. 94
11.4.4 Watch Timer Register Description ............................................................................................................. 94
11.4.5 Register Description for Watch Timer ........................................................................................................ 94
11.5 Timer 0 .............................................................................................................................................................. 96
11.5.1 Overview .................................................................................................................................................... 96
11.5.2 8-bit Timer/Counter Mode .......................................................................................................................... 97
11.5.3 8-bit Capture Mode .................................................................................................................................... 98
11.5.4 Block Diagram ......................................................................................................................................... 100
11.5.5 Register Map ........................................................................................................................................... 100
11.5.6 Timer/Counter 0 Register Description ..................................................................................................... 100
11.5.7 Register Description for Timer/Counter 0 ................................................................................................ 101
11.6 Timer 1/2 ......................................................................................................................................................... 103
11.6.1 Overview .................................................................................................................................................. 103
11.6.2 16-bit Timer/Counter Mode ...................................................................................................................... 103
11.6.3 16-bit Capture Mode ................................................................................................................................ 105
11.6.4 16-bit PPG Mode ..................................................................................................................................... 107
11.6.5 Block Diagram ......................................................................................................................................... 109
11.6.6 Register Map ........................................................................................................................................... 109
11.6.7 Timer/Counter 1/2 Register Description .................................................................................................. 110
11.6.8 Register Description for Timer/Counter 1/2 ............................................................................................. 110
11.7 12-bit A/D Converter ....................................................................................................................................... 113
11.7.1 Overview .................................................................................................................................................. 113
11.7.2 Conversion Timing ................................................................................................................................... 113
11.7.3 Block Diagram ......................................................................................................................................... 114
11.7.4 ADC Operation ........................................................................................................................................ 115
11.7.5 Register Map ........................................................................................................................................... 117
11.7.6 ADC Register Description ....................................................................................................................... 117
11.7.7 Register Description for ADC .................................................................................................................. 118
11.8 USART ............................................................................................................................................................ 121
11.8.1 Overview .................................................................................................................................................. 121
11.8.2 UART Block Diagram .............................................................................................................................. 122
11.8.3 USART Clock Generation ........................................................................................................................ 123
11.8.4 External Clock (SCK)............................................................................................................................... 124
11.8.5 Synchronous mode operation ................................................................................................................. 124
11.8.6 UART Data format ................................................................................................................................... 125
11.8.7 UART Parity bit ........................................................................................................................................ 126
11.8.8 UART Transmitter .................................................................................................................................... 126
11.8.8.1 UART Sending TX data ................................................................................................................................... 126
11.8.8.2 UART Transmitter flag and interrupt ................................................................................................................ 126
11.8.8.3 UART Parity Generator .................................................................................................................................... 127
11.8.8.4 UART Disabling Transmitter ............................................................................................................................ 127
11.8.9 UART Receiver ........................................................................................................................................ 127
11.8.9.1 UART Receiving RX data ................................................................................................................................ 127
11.8.9.2 UART Receiver Flag and Interrupt ................................................................................................................... 128
11.8.9.3 UART Parity Checker ...................................................................................................................................... 128
11.8.9.4 UART Disabling Receiver ................................................................................................................................ 128
11.8.9.5 Asynchronous Data Reception ........................................................................................................................ 129
11.8.10 SPI Mode ............................................................................................................................................. 131
11.8.11 SPI Clock Formats and Timing ............................................................................................................ 131
11.8.12 USART SPI Block Diagram .................................................................................................................. 134
11.8.13 Register Map ........................................................................................................................................ 135
11.8.14 USART Register Description ............................................................................................................... 135
11.8.15 Register Description for USART .......................................................................................................... 135
11.9 I2C .................................................................................................................................................................. 140
11.9.1 Overview .................................................................................................................................................. 140
11.9.2 Block Diagram ......................................................................................................................................... 140
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