Datasheet

Rev. 3.00 Sep. 28, 2009 Page xiv of xxxiv
REJ09B0384-0300
12.6.2 Conflict between Timer Counter (TCNT) Write and Increment........................... 248
12.6.3 Changing Values of CKS2 to CKS0 Bits.............................................................. 248
12.6.4 Changing Value of PSS Bit .................................................................................. 248
12.6.5 Switching between Watchdog Timer Mode and Interval Timer Mode................. 249
12.6.6 System Reset by RESO Signal ............................................................................. 249
Section 13 Serial Communication Interface (SCI) ............................................ 251
13.1 Features.............................................................................................................................. 251
13.2 Input/Output Pins............................................................................................................... 254
13.3 Register Descriptions......................................................................................................... 254
13.3.1 Receive Shift Register (RSR) ............................................................................... 255
13.3.2 Receive Data Register (RDR)............................................................................... 255
13.3.3 Transmit Data Register (TDR).............................................................................. 255
13.3.4 Transmit Shift Register (TSR) .............................................................................. 255
13.3.5 Serial Mode Register (SMR) ................................................................................ 256
13.3.6 Serial Control Register (SCR) .............................................................................. 259
13.3.7 Serial Status Register (SSR) ................................................................................. 262
13.3.8 Smart Card Mode Register (SCMR)..................................................................... 266
13.3.9 Bit Rate Register (BRR) ....................................................................................... 267
13.4 Operation in Asynchronous Mode ..................................................................................... 271
13.4.1 Data Transfer Format............................................................................................ 272
13.4.2 Receive Data Sampling Timing and Reception Margin
in Asynchronous Mode......................................................................................... 273
13.4.3 Clock..................................................................................................................... 274
13.4.4 SCI Initialization (Asynchronous Mode).............................................................. 275
13.4.5 Serial Data Transmission (Asynchronous Mode) ................................................. 276
13.4.6 Serial Data Reception (Asynchronous Mode) ...................................................... 278
13.5 Multiprocessor Communication Function.......................................................................... 282
13.5.1 Multiprocessor Serial Data Transmission ............................................................. 284
13.5.2 Multiprocessor Serial Data Reception .................................................................. 285
13.6 Operation in Clock Synchronous Mode............................................................................. 289
13.6.1 Clock..................................................................................................................... 289
13.6.2 SCI Initialization (Clock Synchronous Mode)...................................................... 290
13.6.3 Serial Data Transmission (Clock Synchronous Mode)......................................... 291
13.6.4 Serial Data Reception (Clock Synchronous Mode) .............................................. 294
13.6.5 Simultaneous Serial Data Transmission and Reception
(Clock Synchronous Mode).................................................................................. 296
13.7 Smart Card Interface Description ...................................................................................... 298
13.7.1 Sample Connection ............................................................................................... 298
13.7.2 Data Format (Except in Block Transfer Mode) .................................................... 298