C515A Datasheet, PDF (32/58 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

C515A
IEN1 (B8_H)
EXEN2 SWDT EX6
EX5
EX4
EX3
EX2 EADC
IRCON (C0_H )
EXF2 TF2 IEX6 IEX5 IEX4 IEX3 IEX2 IADC
ADCON1 (DC_H )
ADCL
MX2 MX1 MX0
ADCON0 (D8_H )
BD
CLK ADEX BSY ADM MX2 MX1 MX0
Internal
Bus
Port 6
MUX
f _OSC /2
V _AREF
V _AGND
Clock
Prescaler
8, 4
S&H
Conversion Clock f _ADC
Input Clock f _IN
Single/
Continuous Mode
ADDATH
(D9_H )
.2
ADDATL
(DA _H)
.3
.4
.5
A/D
Converter
.6
.7
.8 LSB
MSB .1
P4.0 / ADST
Shaded Bit locations are not used in ADC-functions.
Start of
conversion
Internal
Bus
Write to ADDATL
MCB03247
Figure 14
A/D Converter Block Diagram
Semiconductor Group
32
1997-10-01