R8C18 Datasheet, PDF (179/257 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MCU R8C FAMILY / R8C/1x SERIES

R8C/18 Group, R8C/19 Group
16. Comparator
VREF
Comparator conversion
rate selection
fRING-fast
CKS0 = 1
CKS1 = 1
f1
CKS0 = 0
CKS0 = 1
f2
f4
CKS0 = 0
CKS1 = 0
φAD
ADCON0
Software trigger
Timer Z
interrupt request
AD register
b7
ADCAP = 0
ADCAP = 1
Data bus
Trigger
P1_0/AN8
P1_1/AN9
P1_2/AN10
P1_3/AN11
CH2 to CH0 = 100b
CH2 to CH0 = 101b
CH2 to CH0 = 110b
CH2 to CH0 = 111b
Decoder
ADGSEL0 = 0
Vref
Comparator
VIN
ADGSEL0 = 1
CH0 to CH2, ADGSEL0, and CKS0: Bits in ADCON0 register
CKS1, VCUT: Bits in ADCON1 register
Figure 16.1 Comparator Block Diagram
Rev.1.30 Apr 14, 2006 Page 164 of 233
REJ09B0222-0130