
AS3515 V15
austriamicrosystems
Data Sheet, Confidential
www.austriamicrosystems.com
Revision 3.1
48
- 66
6.18.4 Parameter
Table 51 ADC10 Parameter
Symbol
Parameter
Notes
Min
Typ
Max
Unit
RDIV
Input Divider Resistance
BVDD, RTCSUP, UVDD, CHG_IN,
VB1V
138k
180k
234k
Ω
ADCFS
ADC Full Scale Range
2.534
2.56
2.586
V
Ratio1
Division Factor 1
BVDD, RTCSUP, UVDD, CHG_IN
0.198
0.2
0.202
1
Ratio2
Division Factor 2
VB1V
0.396
0.4
0.404
1
Gain
ADC Gain Stage
2.475
2.5
2.525
V
TCON
Conversion Time
-
34
50
s
I_MICFS
I_MicSup1/2 Full Scale Range
1.4
2
2.8
mA
BVDD=3.6V; Tamb=25C; unless otherwise specified
6.18.5 Register Description
The conversion gets started by writing to the ADC_0 register (0x2Eh). After finishing the conversion an interrupt request can be generated
if the corresponding bit in the IRQ_ENRD2 register (0x27h) is set. Conversion source and result can be set / read with the following two
registers.
ADC_0 Register (2Eh)
Table 52 ADC_0 Register
Bit
Name
Description
7..4
ADC_Source
0000: BVDD
0001: RTCSUP
0010: UVDD
0011: CHG_IN
0100: CVDD
0101: BatTemp
0110: MicSup1
0111: MicSup2
1000: VBE_1uA
1001: VBE_2uA
1010: I_MicSup1
1011: I_MicSup2
1100: VB1V
1101: reserved
1110: reserved
1101: reserved
3,2
-
Not used
1
ADC<9>
ADC result bit 10
0
ADC<8>
ADC result bit 9
The register is R/W; default value is 000000xxb
ams
AG
Technical
content
still
valid