
User’s Manual U15862EJ3V0UD
16
17.1
17.2
17.3
17.4
Functions.................................................................................................................................. 501
Configuration............................................................................................................................ 502
Control Registers..................................................................................................................... 504
Operation .................................................................................................................................. 513
17.4.1
Operation stop mode ................................................................................................................... 513
17.4.2
3-wire serial I/O mode.................................................................................................................. 513
17.4.3
3-wire serial I/O mode with automatic transmit/receive function.................................................. 521
CHAPTER 18 I
18.1
18.2
18.3
18.4
18.5
2
C BUS...........................................................................................................................544
Selecting UART2 or I
Features .................................................................................................................................... 545
Configuration............................................................................................................................ 548
Control Registers..................................................................................................................... 550
Functions.................................................................................................................................. 563
18.5.1
Pin configuration.......................................................................................................................... 563
I
18.6.1
Start condition.............................................................................................................................. 564
18.6.2
Addresses.................................................................................................................................... 565
18.6.3
Transfer direction specification.................................................................................................... 566
18.6.4
Acknowledge signal (ACK) .......................................................................................................... 567
18.6.5
Stop condition.............................................................................................................................. 568
18.6.6
Wait signal (WAIT)....................................................................................................................... 569
I
18.7.1
Master device operation .............................................................................................................. 571
18.7.2
Slave device operation (when receiving slave address data (match with SVAn))........................ 574
18.7.3
Slave device operation (when receiving extension code) ............................................................ 578
18.7.4
Operation without communication................................................................................................ 582
18.7.5
Arbitration loss operation (operation as slave after arbitration loss) ............................................ 582
18.7.6
Operation when arbitration loss occurs (no communication after arbitration loss)....................... 584
Interrupt Request (INTIICn) Generation Timing and Wait Control ...................................... 589
Address Match Detection Method.......................................................................................... 590
18.10 Error Detection......................................................................................................................... 590
18.11 Extension Code........................................................................................................................ 590
18.12 Arbitration................................................................................................................................. 591
18.13 Wakeup Function ..................................................................................................................... 592
18.14 Communication Reservation .................................................................................................. 593
18.15 Cautions.................................................................................................................................... 596
18.16 Communication Operations.................................................................................................... 597
18.16.1 Master operations........................................................................................................................ 597
18.16.2 Slave operation............................................................................................................................ 599
18.17 Timing of Data Communication.............................................................................................. 600
2
C1 Mode................................................................................................ 544
18.6
2
C Bus Definitions and Control Methods.............................................................................. 564
18.7
2
C Interrupt Requests (INTIICn).............................................................................................. 571
18.8
18.9
CHAPTER 19 INTERRUPT/EXCEPTION PROCESSING FUNCTION................................................607
19.1
Overview ................................................................................................................................... 607
19.1.1
Features ...................................................................................................................................... 607
19.2
Non-Maskable Interrupts......................................................................................................... 614
19.2.1
Operation..................................................................................................................................... 617
19.2.2
Restore........................................................................................................................................ 618
19.2.3
NP flag......................................................................................................................................... 619