
Preliminary User’s Manual U17397EJ2V1UD
14
18.5.1
Start conditions ........................................................................................................................449
18.5.2
Addresses ................................................................................................................................450
18.5.3
Transfer direction specification.................................................................................................450
18.5.4
Acknowledge (ACK) .................................................................................................................451
18.5.5
Stop condition ..........................................................................................................................452
18.5.6
Wait ..........................................................................................................................................453
18.5.7
Canceling wait ..........................................................................................................................455
18.5.8
Interrupt request (INTIIC0) generation timing and wait control .................................................455
18.5.9
Address match detection method .............................................................................................456
18.5.10
Error detection..........................................................................................................................456
18.5.11
Extension code.........................................................................................................................457
18.5.12
Arbitration.................................................................................................................................458
18.5.13
Wakeup function.......................................................................................................................459
18.5.14
Communication reservation......................................................................................................460
18.5.15
Other cautions ..........................................................................................................................463
18.5.16
Communication operations.......................................................................................................465
18.5.17
Timing of I
2C interrupt request (INTIIC0) occurrence................................................................472
18.6
Timing Charts ......................................................................................................................... 493
CHAPTER 19 MULTIPLIER/DIVIDER ................................................................................................... 500
19.1
Functions of Multiplier/Divider ............................................................................................. 500
19.2
Configuration of Multiplier/Divider ....................................................................................... 500
19.3
Register Controlling Multiplier/Divider ................................................................................ 504
19.4
Operations of Multiplier/Divider............................................................................................ 505
19.4.1
Multiplication operation.............................................................................................................505
19.4.2
Division operation.....................................................................................................................507
CHAPTER 20 INTERRUPT FUNCTIONS ............................................................................................ 509
20.1
Interrupt Function Types....................................................................................................... 509
20.2
Interrupt Sources and Configuration ................................................................................... 509
20.3
Registers Controlling Interrupt Functions .......................................................................... 514
20.4
Interrupt Servicing Operations ............................................................................................. 522
20.4.1
Maskable interrupt acknowledgement ......................................................................................522
20.4.2
Software interrupt request acknowledgement ..........................................................................524
20.4.3
Multiple interrupt servicing........................................................................................................525
20.4.4
Interrupt request hold ...............................................................................................................528
CHAPTER 21 KEY INTERRUPT FUNCTION ..................................................................................... 529
21.1
Functions of Key Interrupt .................................................................................................... 529
21.2
Configuration of Key Interrupt.............................................................................................. 529
21.3
Register Controlling Key Interrupt ....................................................................................... 530
CHAPTER 22 STANDBY FUNCTION .................................................................................................. 531
22.1
Standby Function and Configuration................................................................................... 531
22.1.1
Standby function.......................................................................................................................531
22.1.2
Registers controlling standby function......................................................................................531
22.2
Standby Function Operation................................................................................................. 534