Table of contents
11.2.10 CTS/RTS function ..................................................................................................11-19
11.3 Clock synchronous serial I/O mode ...........................................................................11-21
11.3.1 Transfer clock (Synchronizing clock).....................................................................11-21
11.3.2 Transfer data format ................................................................................................11-23
11.3.3 Method of transmission ...........................................................................................11-24
11.3.4 Transmit operation ...................................................................................................11-27
11.3.5 Method of reception .................................................................................................11-29
11.3.6 Receive operation ....................................................................................................11-32
11.3.7 Processing on detecting overrun error..................................................................11-35
[Precautions for clock synchronous serial I/O mode] ....................................................11-36
11.4 Clock asynchronous serial I/O (UART) mode...........................................................11-37
11.4.1 Transfer rate (Frequency of transfer clock) .........................................................11-38
11.4.2 Transfer data format ................................................................................................11-40
11.4.3 Method of transmission ...........................................................................................11-41
11.4.4 Transmit operation ...................................................................................................11-45
11.4.5 Method of reception .................................................................................................11-48
11.4.6 Receive operation ....................................................................................................11-51
11.4.7 Processing on detecting error ................................................................................11-53
11.4.8 Sleep mode ...............................................................................................................11-54
[Precautions for clock asynchronous serial I/O (UART) mode]....................................11-55
CHAPTER 12. A-D CONVERTER
12.1 Overview .............................................................................................................................. 12-2
12.2 Block description .............................................................................................................. 12-4
12.2.1 A-D control registers 0, 1, and 2 ............................................................................ 12-5
12.2.2 A-D register i (i = 0 to 11) .....................................................................................12-10
12.2.3 Comparator function select register 0, 1 and comparator result register 0, 1.............12-12
12.2.4 A-D conversion interrupt control register..............................................................12-14
12.2.5 Port P7 direction register, port P8 direction register..........................................12-15
12.3 A-D conversion method .................................................................................................12-16
12.4 Absolute accuracy and Differential non-linearity error..........................................12-19
12.4.1 Absolute accuracy ....................................................................................................12-19
12.4.2 Differential non-linearity error .................................................................................12-20
12.5 Comparison voltage in 8-bit resolution mode..........................................................12-21
12.6 Comparator function .......................................................................................................12-22
12.7 One-shot mode.................................................................................................................12-23
12.7.1 Settings for one-shot mode ....................................................................................12-23
12.7.2 One-shot mode operation .......................................................................................12-25
12.8 Repeat mode.....................................................................................................................12-26
12.8.1 Settings for repeat mode ........................................................................................12-26
12.8.2 Repeat mode operation...........................................................................................12-28
12.9 Single sweep mode.........................................................................................................12-29
12.9.1 Settings for single sweep mode ............................................................................12-29
12.9.2 Single sweep mode operation ................................................................................12-31
12.10 Repeat sweep mode 0..................................................................................................12-32
12.10.1 Settings for repeat sweep mode 0 ......................................................................12-32
12.10.2 Repeat sweep mode 0 operation ........................................................................12-34
12.11 Repeat sweep mode 1..................................................................................................12-35
12.11.1 Settings for repeat sweep mode 0 ......................................................................12-35
12.11.2 Repeat sweep mode 1 operation ........................................................................12-39
[Precautions for A-D converter]............................................................................................12-40
7905 Group User’s Manual Rev.1.0
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RENESAS [ RENESAS TECHNOLOGY CORP ]
