
Preliminary User’s Manual U17734EJ1V0UD
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17.4 Setting LCD Controller/Driver ................................................................................................. 436
17.5 LCD Display Data Memory....................................................................................................... 438
17.6 Common and Segment Signals .............................................................................................. 439
17.7 Display Modes .......................................................................................................................... 443
17.7.1 Static display example .................................................................................................................443
17.7.2 Two-time-slice display example ...................................................................................................446
17.7.3 Three-time-slice display example.................................................................................................449
17.7.4 Four-time-slice display example...................................................................................................453
17.8 Supplying LCD Drive Voltages VLC0, VLC1, and VLC2................................................................ 456
17.8.1 Internal resistance division method ..............................................................................................456
17.8.2 External resistance division method.............................................................................................458
17.8.3 Internal voltage boosting method .................................................................................................459
CHAPTER 18 INTERRUPT FUNCTIONS ............................................................................................ 460
18.1 Interrupt Function Types ......................................................................................................... 460
18.2 Interrupt Sources and Configuration ..................................................................................... 460
18.3 Registers Controlling Interrupt Functions............................................................................. 463
18.4 Interrupt Servicing Operations ............................................................................................... 471
18.4.1 Maskable interrupt acknowledgement..........................................................................................471
18.4.2 Software interrupt request acknowledgement ..............................................................................473
18.4.3 Multiple interrupt servicing ...........................................................................................................474
18.4.4 Interrupt request hold ...................................................................................................................477
CHAPTER 19 STANDBY FUNCTION .................................................................................................. 478
19.1 Standby Function and Configuration ..................................................................................... 478
19.1.1 Standby function ..........................................................................................................................478
19.1.2 Registers controlling standby function..........................................................................................478
19.2 Standby Function Operation ................................................................................................... 481
19.2.1 HALT mode ..................................................................................................................................481
19.2.2 STOP mode .................................................................................................................................486
CHAPTER 20 RESET FUNCTION........................................................................................................ 491
20.1 Register for Confirming Reset Source ................................................................................... 499
CHAPTER 21 POWER-ON-CLEAR CIRCUIT...................................................................................... 500
21.1 Functions of Power-on-Clear Circuit...................................................................................... 500
21.2 Configuration of Power-on-Clear Circuit ............................................................................... 501
21.3 Operation of Power-on-Clear Circuit ...................................................................................... 501
21.4 Cautions for Power-on-Clear Circuit ...................................................................................... 504
CHAPTER 22 LOW-VOLTAGE DETECTOR ....................................................................................... 506
22.1 Functions of Low-Voltage Detector........................................................................................ 506
22.2 Configuration of Low-Voltage Detector ................................................................................. 506
22.3 Registers Controlling Low-Voltage Detector......................................................................... 507
22.4 Operation of Low-Voltage Detector ........................................................................................ 510
22.4.1 When used as reset .....................................................................................................................511