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C509-L_97 Datasheet, PDF (275/290 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller
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Device Specifications
C509-L
11.3 A/D Converter Characteristics
TA = 0 to 70 °C for the SAB-C509
TA = – 40 to 85 °C for the SAF-C509
VCC = 5 V + 10%, – 5%; VSS = 0 V
4 V ≤ VAREF ≤ VCC+0.1 V ; VSS-0.1 V ≤ VAGND ≤ VSS+0.2 V
Parameter
Analog input voltage
Sample time
Conversion time
Total unadjusted error
Internal resistance of reference
voltage source
Internal resistance of analog
source
ADC input capacitance
Symbol
VAIN
tS
tADCC
TUE
RAREF
RASRC
CAIN
Limit Values
min.
max.
VAGND
8 t IN
48 t IN
–
VAREF
512 t IN
832 t IN
±2
–
tADC / 250
- 0.25
–
tS / 500
- 0.25
–
50
Unit
V
LSB
kΩ
kΩ
pF
Test Condition
1)
2) see table below
3) see table below
4)
tADC in [ns] 5) 6)
tS in [ns] 3) 6)
6)
Notes see next page.
Clock calculation table
Conversion Clock Selection
ADCL1 ADCL0 Prescaler
CCP
0
0
4
0
1
8
1
0
16
1
1
32
Sample Clock Selection
ADST1 ADST0 Prescaler
SCP
0
0
2
0
1
1
0
1
1
0
0
4
0
1
1
0
1
1
0
0
8
0
1
1
0
1
1
0
0
16
0
1
1
0
1
1
Sample Time
tS
8 x tIN
16 x tIN
32 x tIN
64 x tIN
16 x tIN
32 x tIN
64 x tIN
128 x tIN
32 x tIN
64 x tIN
128 x tIN
256 x tIN
64 x tIN
128 x tIN
256 x tIN
512 x tIN
Further timing conditions : t ADC min = 500 ns = CCP x CLP
tIN = 1 / fOSC = CLP
tSC = t ADC x SCP
Conversion Time
t ADCC
48 x tIN
56 x tIN
72 x tIN
104 x tIN
96 x tIN
112 x tIN
144 x tIN
208 x tIN
192 x tIN
224 x tIN
288 x tIN
416 x tIN
384 x tIN
448 x tIN
576 x tIN
832 x tIN
Semiconductor Group
11-5
1997-10-01
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