
Rev. 1.00 Mar. 02, 2006 Page xix of xl
13.8
Interrupt Sources...............................................................................................................400
13.8.1
Interrupts in Normal Serial Communication Interface Mode ........................... 400
13.8.2
Interrupts in Smart Card Interface Mode .......................................................... 401
13.9
Usage Notes ...................................................................................................................... 402
13.9.1
Module Stop Mode Setting ............................................................................... 402
13.9.2
Break Detection and Processing ....................................................................... 402
13.9.3
Mark State and Break Sending.......................................................................... 402
13.9.4
Receive Error Flags and Transmit Operations
(Clocked Synchronous Mode Only) ................................................................. 402
13.9.5
Relation between Writing to TDR and TDRE Flag .......................................... 402
13.9.6
SCI Operations during Mode Transitions ......................................................... 403
13.9.7
Notes on Switching from SCK Pins to Port Pins .............................................. 406
Section 14 I
2C Bus Interface (IIC) .....................................................................407
14.1
Features............................................................................................................................. 407
14.2
Input/Output Pins .............................................................................................................. 410
14.3
Register Descriptions ........................................................................................................ 411
14.3.1
I
2C Bus Data Register (ICDR) .......................................................................... 411
14.3.2
Slave Address Register (SAR).......................................................................... 412
14.3.3
Second Slave Address Register (SARX) .......................................................... 413
14.3.4
I
2C Bus Mode Register (ICMR)........................................................................ 415
14.3.5
I
2C Bus Control Register (ICCR)...................................................................... 418
14.3.6
I
2C Bus Status Register (ICSR)......................................................................... 427
14.3.7
I
2C Bus Control Initialization Register (ICRES)............................................... 431
14.3.8
I
2C Bus Extended Control Register (ICXR)...................................................... 432
14.4
Operation .......................................................................................................................... 436
14.4.1
I
2C Bus Data Format ......................................................................................... 436
14.4.2
Initialization ...................................................................................................... 438
14.4.3
Master Transmit Operation ............................................................................... 438
14.4.4
Master Receive Operation................................................................................. 442
14.4.5
Slave Receive Operation................................................................................... 451
14.4.6
Slave Transmit Operation ................................................................................. 458
14.4.7
IRIC Setting Timing and SCL Control ............................................................. 461
14.4.8
Noise Canceller................................................................................................. 463
14.4.9
Initialization of Internal State ........................................................................... 463
14.5
Interrupt Sources...............................................................................................................465
14.6
Usage Notes ...................................................................................................................... 465
14.6.1
Module Stop Mode Setting ............................................................................... 477