7733 datasheet(11/940 Pages) RENESAS

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7733 Group User’s Manual

Table of contents

8.3 Clock synchronous serial I/O mode ................................................................................ 8-21

8.3.1 Transfer clock (sync clock) ......................................................................................... 8-22

8.3.2 Transfer data format..................................................................................................... 8-26

8.3.3 Method of transmission ................................................................................................ 8-27

8.3.4 Transmit operation ........................................................................................................ 8-32

8.3.5 Method of reception ..................................................................................................... 8-35

8.3.6 Receive operation ......................................................................................................... 8-39

8.3.7 Processing when an overrun error is detected ....................................................... 8-42

8.3.8 Precautions for clock synchronous serial I/O .......................................................... 8-43

8.4 Clock asynchronous serial I/O (UART) mode ............................................................... 8-44

8.4.1 Transfer rate (Baud rate: transfer clock frequency) ................................................ 8-45

8.4.2 Transfer data format..................................................................................................... 8-47

8.4.3 Method of transmission ................................................................................................ 8-49

8.4.4 Transmit operation ........................................................................................................ 8-53

8.4.5 Method of reception ..................................................................................................... 8-56

8.4.6 Receive operation ......................................................................................................... 8-59

8.4.7 Processing when error is detected ............................................................................. 8-61

8.4.8 Precautions for UART .................................................................................................. 8-61

8.4.9 Sleep mode (UART0 and UART1) ............................................................................. 8-62

CHAPTER 9. A-D CONVERTER

9.1 Overview .................................................................................................................................. 9-2

9.2 Block description ................................................................................................................... 9-3

9.2.1 A-D control register 0 .................................................................................................... 9-4

9.2.2 A-D control register 1 .................................................................................................... 9-6

9.2.3 A-D register i (i = 0 to 7) .............................................................................................. 9-7

9.2.4 A-D/UART2 trans./rece. interrupt control register ...................................................... 9-8

9.2.5 Port P7 direction register ............................................................................................ 9-10

9.3 A-D conversion method ...................................................................................................... 9-11

9.4 Absolute accuracy and Differential non-linearity error .............................................. 9-14

9.4.1 Absolute accuracy ........................................................................................................ 9-14

9.4.2 Differential non-linearity error ...................................................................................... 9-15

9.4.3 Comparison voltage when resolution = 8 bits ......................................................... 9-16

9.5 One-shot mode ..................................................................................................................... 9-17

9.5.1 Setting for one-shot mode ........................................................................................... 9-17

9.5.2 Operation in one-shot mode........................................................................................ 9-19

9.6 Repeat mode ......................................................................................................................... 9-20

9.6.1 Setting example for repeat mode ............................................................................... 9-20

9.6.2 Operation in repeat mode ........................................................................................... 9-22

9.7 Single sweep mode ............................................................................................................. 9-23

9.7.1 Setting for single sweep mode ................................................................................... 9-23

9.7.2 Operation in single sweep mode ................................................................................ 9-25

9.8 Repeat sweep mode ............................................................................................................ 9-27

9.8.1 Setting for repeat sweep mode .................................................................................. 9-27

9.8.2 Operation in repeat sweep mode ............................................................................... 9-29

9.9 Precautions for A-D converter .......................................................................................... 9-31

CHAPTER 10. WATCHDOG TIMER

10.1 Block description ............................................................................................................... 10-2

10.1.1 Watchdog timer ........................................................................................................... 10-3

10.1.2 Watchdog timer frequency selection flag ................................................................ 10-4

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