7702 datasheet(9/217 Pages) RENESAS

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Table of Contents

iii

7702/7703 Group User’s Manual

6.2.5 Port P6 direction register ............................................................................................. 6-7

6.3 Timer mode ............................................................................................................................ 6-8

6.3.1 Setting for timer mode ................................................................................................ 6-10

6.3.2 Count source ................................................................................................................ 6-11

6.3.3 Operation in timer mode ............................................................................................. 6-12

6.4 Event counter mode ........................................................................................................... 6-14

6.4.1 Setting for event counter mode ................................................................................. 6-16

6.4.2 Operation in event counter mode .............................................................................. 6-17

6.5 Pulse period/pulse width measurement mode ............................................................. 6-19

6.5.1 Setting for pulse period/pulse width measurement mode ...................................... 6-21

6.5.2 Count source ................................................................................................................ 6-23

6.5.3 Operation in pulse period/pulse width measurement mode ................................... 6-24

CHAPTER 7. SERIAL I/O

7.1 Overview .................................................................................................................................. 7-2

7.2 Block description .................................................................................................................. 7-3

7.2.1 UARTi transmit/receive mode register ........................................................................ 7-4

7.2.2 UARTi transmit/receive control register 0 .................................................................. 7-6

7.2.3 UARTi transmit/receive control register 1 .................................................................. 7-7

7.2.4 UARTi transmit register and UARTi transmit buffer register ................................... 7-9

7.2.5 UARTi receive register and UARTi receive buffer register .................................... 7-11

7.2.6 UARTi baud rate register (BRGi) .............................................................................. 7-13

7.2.7 UARTi transmit interrupt control and UARTi receive interrupt control registers 7-14

7.2.8 Port P8 direction register ........................................................................................... 7-16

7.3 Clock synchronous serial I/O mode ............................................................................... 7-17

7.3.1 Transfer clock (synchronizing clock) ......................................................................... 7-18

7.3.2 Method of transmission ............................................................................................... 7-19

7.3.3 Transmit operation ....................................................................................................... 7-23

7.3.4 Method of reception .................................................................................................... 7-25

7.3.5 Receive operation ........................................................................................................ 7-29

7.3.6 Process on detecting overrun error ........................................................................... 7-32

[Precautions when operating in clock synchronous serial I/O mode] ............................. 7-33

7.4 Clock asynchronous serial I/O (UART) mode ............................................................... 7-35

7.4.1 Transfer rate (frequency of transfer clock) .............................................................. 7-36

7.4.2 Transfer data format .................................................................................................... 7-38

7.4.3 Method of transmission ............................................................................................... 7-40

7.4.4 Transmit operation ....................................................................................................... 7-44

7.4.5 Method of reception .................................................................................................... 7-46

7.4.6 Receive operation ........................................................................................................ 7-49

7.4.7 Process on detecting error ......................................................................................... 7-51

7.4.8 Sleep mode .................................................................................................................. 7-52

[Precautions when operating in clock asynchronous serial I/O mode] ........................... 7-53

CHAPTER 8. A-D CONVERTER

8.1 Overview .................................................................................................................................. 8-2

8.2 Block description .................................................................................................................. 8-3

8.2.1 A-D control register ....................................................................................................... 8-4

8.2.2 A-D sweep pin select register ...................................................................................... 8-6

8.2.3 A-D register i (i = 0 to 7) ............................................................................................. 8-7

8.2.4 A-D conversion interrupt control register .................................................................... 8-8

8.2.5 Port P7 direction register ............................................................................................. 8-9

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