C505-2RM SIEMENS [Siemens Semiconductor Group], C505-2RM Datasheet - Page 41

• Manufacturer Part Number: C505-2RM
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Figure 18
Block Diagram of the 8-Bit A/D Converter
Semiconductor Group
Port 1
f
V
V
OSC
AREF
AGND
Shaded Bit locations are not used in ADC-functions.
Conversion
IEN1 (B8 )
IRCON (C0 )
P1ANA (90 )
ADCON1 (DC )
ADCON0 (D8 )
Prescaler
EXEN2
ADCL1
Clock
EAN7
EXF2
BD
MUX
H
H
H
ADCL0
H
SWDT
EAN6
H
CLK
TF2
Conversion Clock
EAN5
IEX6
EX6
Input Clock f
C505 / C505C
EAN4
IEX5
BSY
EX5
S&H
IN
f
41
ADC
EAN3
IEX4
ADM
EX4
Single /
Continuous Mode
EAN2
IEX3
MX2
MX2
EX3
Converter
A / D
Start of
conversion
ECAN
EAN1
MX1
MX1
SWI
C505A / C505CA
ADDAT
(D9 )
MSB
LSB
EADC
EAN0
IADC
Write to ADST
.2
.3
.4
.5
.6
MX0
MX0
.1
C505 / C505C
H
MCB03298
ADST
(DA )
1997-12-01
Internal
Internal
H
Bus
Bus