7721 Просмотр технического описания (PDF) - Renesas Electronics
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7721 Datasheet PDF : 577 Pages
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Table of contents
9.5 Pulse period/Pulse width measurement mode ............................................................. 9-19
9.5.1 Setting for pulse period/pulse width measurement mode ...................................... 9-21
9.5.2 Count source ................................................................................................................ 9-22
9.5.3 Operation in pulse period/pulse width measurement mode ................................... 9-23
[Precautions for pulse period/pulse width measurement mode] ...................................... 9-25
CHAPTER 10 REAL-TIME OUTPUT
10.1 Overview ............................................................................................................................. 10-2
10.2 Block description .............................................................................................................. 10-4
10.2.1 Real-time output control register ............................................................................. 10-4
10.2.2 Pulse output data registers 0 and 1 ....................................................................... 10-5
10.2.3 Port P6 direction register ......................................................................................... 10-6
10.2.4 Timers A0 and A1 ..................................................................................................... 10-6
10.3 Setting of real-time output ............................................................................................. 10-7
10.4 Real-time output operation ........................................................................................... 10-10
CHAPTER 11 SERIAL I/O
11.1 Overview ............................................................................................................................. 11-2
11.2 Block description .............................................................................................................. 11-3
11.2.1 UARTi transmit/receive mode register .................................................................... 11-4
11.2.2 UARTi transmit/receive control register 0 .............................................................. 11-6
11.2.3 UARTi transmit/receive control register 1 .............................................................. 11-7
11.2.4 UARTi transmit register and UARTi transmit buffer register ............................... 11-9
11.2.5 UARTi receive register and UARTi receive buffer register ................................ 11-11
11.2.6 UARTi baud rate register (BRGi) .......................................................................... 11-13
11.2.7 UARTi transmit interrupt control and UARTi receive interrupt control registers ......................... 11-14
11.2.8 Port P8 direction register ....................................................................................... 11-15
11.3 Clock synchronous serial I/O mode ........................................................................... 11-16
11.3.1 Transfer clock (Synchronizing clock) .................................................................... 11-17
11.3.2 Method of transmission ........................................................................................... 11-18
11.3.3 Transmit operation ................................................................................................... 11-21
11.3.4 Method of reception ................................................................................................ 11-23
11.3.5 Receive operation .................................................................................................... 11-27
11.3.6 Processing on detecting overrun error ................................................................. 11-29
[Precautions for clock synchronous serial I/O mode] ..................................................... 11-30
11.4 Clock asynchronous serial I/O (UART) mode .......................................................... 11-31
11.4.1 Transfer rate (Frequency of transfer clock) ......................................................... 11-32
11.4.2 Transfer data format ............................................................................................... 11-33
11.4.3 Method of transmission ........................................................................................... 11-34
11.4.4 Transmit operation ................................................................................................... 11-38
11.4.5 Method of reception ................................................................................................ 11-41
11.4.6 Receive operation .................................................................................................... 11-44
11.4.7 Processing on detecting error ................................................................................ 11-46
11.4.8 Sleep mode .............................................................................................................. 11-47
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7721 Group User’s Manual
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