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User Manual May 2019 | Page 21/49
USER MANUAL
Scavenger Transmitter Module
STM 330 / STM 331 STM 331U / STM 332U / STM 333U
(Stepcode DE and later)
For I/O pins configured as analog pins the IOVDD voltage level is not relevant! See
also 3.5.2.
3.5.2
Analog and digital inputs
Parameter
Conditions / Notes
Min
Typ Max
Units
Analog Input Mode
Measurement range
Single ended
Internal reference RVDD/2
0.07
RVDD-
0.07
V
Interpreted as
6
0x00
0xFF
Input coupling
DC
Input impedance
Single ended against
GND @ 1 kHz
10
M
Input capacitance
Single ended against
GND @ 1 kHz
10
pF
Parameter
Conditions / Notes
Min
Typ Max
Units
Digital Input Mode
Input HIGH voltage
2/3
IOVDD
V
Input LOW voltage
1/3
IOVDD
V
Pull up resistor
@IOVDD=1.7 … 1.9 V
90
132
200
k
3.5.3
Temperature sensor
Parameter
Conditions / Notes
Min
Typ Max
Units
Measurement range
0
40
°C
Accuracy
17 - 27 °C
0 – 40
0.5
1
K
K
6
For measurement of set point with external set point dial
IOVDD
A
D
IO
0
A
D
IO
1
A
D
IO
2
A
D
IO
3
A
D
IO
4
A
D
IO
5
A
D
IO
6
A
D
IO
7
S
C
S
E
D
IO
0
S
C
LK
D
IO
1
W
S
D
A
D
IO
2
R
S
D
A
D
IO
3
If configured as digital I/O
