
Rev. 1.00 Sep. 13, 2007 Page xxiii of xxviii
Section 18 A/D Converter....................................................................................759
18.1
Features............................................................................................................................. 759
18.2
Input/Output Pins.............................................................................................................. 762
18.3
Register Descriptions ........................................................................................................ 763
18.3.1
A/D Data Registers A to H (ADDRA to ADDRH) .......................................... 764
18.3.2
A/D Control/Status Register for Unit 0 (ADCSR_0)........................................ 765
18.3.3
A/D Control/Status Register for Unit 1 (ADCSR_1)........................................ 767
18.3.4
A/D Control Register for Unit 0 (ADCR_0)..................................................... 769
18.3.5
A/D Control Register for Unit 1 (ADCR_1)..................................................... 771
18.4
Operation .......................................................................................................................... 773
18.4.1
Single Mode...................................................................................................... 773
18.4.2
Scan Mode ........................................................................................................ 774
18.4.3
Input Sampling and A/D Conversion Time ...................................................... 777
18.4.4
External Trigger Input Timing.......................................................................... 779
18.5
Interrupt Source ................................................................................................................781
18.6
A/D Conversion Accuracy Definitions ............................................................................. 782
18.7
Usage Notes ...................................................................................................................... 784
18.7.1
Module Stop Function Setting .......................................................................... 784
18.7.2
A/D Input Hold Function in Software Standby Mode ...................................... 784
18.7.3
Permissible Signal Source Impedance .............................................................. 784
18.7.4
Influences on Absolute Accuracy ..................................................................... 785
18.7.5
Setting Range of Analog Power Supply and Other Pins ................................... 785
18.7.6
Notes on Board Design ..................................................................................... 786
18.7.7
Notes on Noise Countermeasures ..................................................................... 786
Section 19 D/A Converter....................................................................................789
19.1
Features............................................................................................................................. 789
19.2
Input/Output Pins.............................................................................................................. 790
19.3
Register Descriptions ........................................................................................................ 790
19.3.1
D/A Data Registers 0 and 1 (DADR0 and DADR1)......................................... 790
19.3.2
D/A Control Register 01 (DACR01) ................................................................ 791
19.4
Operation .......................................................................................................................... 793
19.5
Usage Notes ...................................................................................................................... 794
19.5.1
Module Stop State Setting ................................................................................ 794
19.5.2
D/A Output Hold Function in Software Standby Mode.................................... 794
Section 20 RAM ..................................................................................................795
Section 21 Flash Memory ....................................................................................797
21.1
Features............................................................................................................................. 797