C517A_99 Datasheet, PDF (160/218 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

On-Chip Peripheral Components
C517A
IEN1 (B8 _H)
EXEN2 SWDT EX6 EX5 EX4 EX3 EX2 EADC
IRCON0 (C0H )
EXF2 TF2 IEX6 IEX5 IEX4 IEX3 IEX2 IADC
P8 (DD _H)
_
_
_
_ _{P8.3 P8.2 P8.1 P8.0}
P7 (DB _H)
P7.7 P7.6 P7.5 P7.4 P7.3 P7.2 P7.1 P7.0
ADCON1 (DC _H)
ADCL ^_
_
_ _{MX3 MX2 MX1 MX0}
ADCON0 (D8 _H)
BD CLK ADEX BSY ADM MX2 MX1 MX0
internal
Bus
Port 7
Port 8
MUX
f_OSC /2
Clock
Prescaler
÷8, ÷4
V_AREF
V_AGND
P6.0/ADST
Write to ADDATL
S&H
Conversion
Clock f_ADC
Input
Clock f_IN
Shaded bit locations are not used in ADC-functions
Single/
Continuous Mode
A/D
Converter
ADDATH ADDATL
(D9 _H) (DAH)
.2
_
.3
_
.4
_
.5
_
.6
_
.7
_
.8 LSB
MSB .1
Start of
Conversion
internal
Bus
MCB03332
Figure 6-42
Block Diagram A/D Converter
Semiconductor Group
6-94