HD64F2145 Datasheet, PDF (21/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

19.4.3 A20 Gate ..............................................................................................................539
19.4.4 Host Interface Shutdown Function (LPCPD) .......................................................542
19.4.5 Host Interface Serialized Interrupt Operation (SERIRQ).....................................546
19.4.6 Host Interface Clock Start Request (CLKRUN) ..................................................548
19.5 Interrupt Sources ...............................................................................................................548
19.5.1 IBFI1, IBFI2, IBFI3, and ERRI............................................................................548
19.5.2 SMI, HIRQ1, HIRQ6, HIRQ9, HIRQ10, HIRQ11, and HIRQ12 ........................549
19.6 Usage Notes.......................................................................................................................551
19.6.1 Module Stop Mode Setting...................................................................................551
19.6.2 Notes on Using Host Interface .............................................................................551
Section 20 D/A Converter .................................................................................553
20.1 Features .............................................................................................................................553
20.2 Input/Output Pins ..............................................................................................................554
20.3 Register Descriptions.........................................................................................................554
20.3.1 D/A Data Registers 0 and 1 (DADR0, DADR1)..................................................554
20.3.2 D/A Control Register (DACR).............................................................................555
20.4 Operation...........................................................................................................................556
20.5 Usage Note ........................................................................................................................557
20.5.1 Module Stop Mode Setting...................................................................................557
Section 21 A/D Converter .................................................................................559
21.1 Features .............................................................................................................................559
21.2 Input/Output Pins ..............................................................................................................561
21.3 Register Descriptions.........................................................................................................562
21.3.1 A/D Data Registers A to D (ADDRA to ADDRD) ..............................................562
21.3.2 A/D Control/Status Register (ADCSR)................................................................563
21.3.3 A/D Control Register (ADCR).............................................................................564
21.3.4 Keyboard Comparator Control Register (KBCOMP) ..........................................565
21.4 Operation...........................................................................................................................566
21.4.1 Single Mode .........................................................................................................566
21.4.2 Scan Mode............................................................................................................566
21.4.3 Input Sampling and A/D Conversion Time..........................................................568
21.4.4 External Trigger Input Timing .............................................................................569
21.5 Interrupt Sources ...............................................................................................................569
21.6 A/D Conversion Accuracy Definitions..............................................................................570
21.7 Usage Notes.......................................................................................................................572
21.7.1 Permissible Signal Source Impedance..................................................................572
21.7.2 Influences on Absolute Accuracy.........................................................................572
21.7.3 Setting Range of Analog Power Supply and Other Pins ......................................573
21.7.4 Notes on Board Design ........................................................................................573
21.7.5 Notes on Noise Countermeasures.........................................................................573
21.7.6 Module Stop Mode Setting...................................................................................574
Rev. 2.0, 08/02, page xix of xxxviii