Datasheet

C505/C505C/C505A/C505CA
Data Sheet 39 12.00
Figure 18
Block Diagram of the 8-Bit A/D Converter
ADC
Shaded Bit locations are not used in ADC-functions.
f
AGND
AREF
OSC
V
V
Port 1
Conversion
Prescaler
Clock
MUX
fConversion Clock
Input Clock f
IN
S&H
ADCON1 (DC )
ADCON0 (D8 )
ADCL1
H
ADCL0
H
IRCON (C0 )
P1ANA (90 )
EAN7
EAN6
H
H
BSY
EAN5
EAN4
IEN1 (B8 )
H
Write to ADST
MCB03298
(DA )
ADST
conversion
Converter
A / D
Continuous Mode
Single /
Start of
MSB
.6
.5
.4
LSB
.2
.3
.1
H
(D9 )
ADDAT
Bus
Internal
H
ADM MX2
MX2
EAN3
EAN2
MX1
MX1
MX0
MX0
EAN1
IADC
EAN0
EADC
Bus
Internal
CLK
BD
SWI
IEX3
IEX4
IEX5IEX6
TF2EXF2
ECAN
EX3
EX4
EX5EX6
SWDT
EXEN2