ST STM8S User Manual

Evaluation kit board settings UM0671
12/23 Doc ID 15330 Rev 4
3.1.5 Analysis connectors (J2 and J3)
Application designers can use connectors J2 and J3 to analyze electrode and driven shield
signals on the daughterboard.
Note: The user should take into account possible probe capacitance disturbance and should
consider re-calibrating the device before use.
3.1.6 External supply and communication
Connector J6 provides I
2
C data and clock signal pins for communication with the
daughterboard microcontroller. The user can use these pins to develop his own
communication protocol.
Resistors R36 and R37 are available as I
2
C pull-up resistors and can be mounted by the
user if needed.
Note: If the device is supplied by pin 1 and 5, jumper W2 must not be connected.
Pin 2 is connected to PA1 and is available for user implementation. For example, it may be
used for acquisition synchronization.
Table 5. J2 connector pin description
Pin number Description Pin number Description
Shield Slider 1 active shield K3 Key 3 electrode
K1 Key 1 electrode K4 Key 4 electrode
K2 Key 2 electrode K5 Key 5 electrode
Table 6. J3 connector pin description
Pin number Description Pin number Description
S1_1 Slider 1 electrode 1 S1_4 Slider 1 electrode 4
S1_2 Slider 1 electrode 2 S1_5 Slider 1 electrode 5
S1_3 Slider 1 electrode 3 Shield Slider 1 active shield
Table 7. J6 connector pin description
Pin number Description Pin number Description
1 VSS 4
I
2
C SDA
2PA1 5VDD
3
I
2
C SCL
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ST STM8S Specifications

General

Brand	ST
Model	STM8S
Category	Microcontrollers
Language	English