Pin Function Grouping


Done — I grouped all 21 terminals using the datasheet pin table and kept each physical pin in exactly one functional group.
Key grouping applied:
  • Power: VDD
  • Ground: GND_1, GND_2 / exposed pad
  • I2C: SCL, SDA
  • Control/Address: ADD_SEL, ~RESET, ~INT
  • GPIO/Sensors: GPIO12 and BUTTON0–BUTTON11 GPIO touch electrode pins
I also normalized the pin types to Flux-supported values like Power In, Ground, Input, Output, and Bi-Directional.
  • Make the functional group more general.
  • Add a Section property to all pins, and apply the same value used in the Pin Group property to each pin's Section property.
I’ll simplify the pin groups to broader categories and mirror each Pin Group value into the Section property for every terminal.
Done — I changed the groups to broader categories and verified every pin now has Section = Pin Group.
Applied groups:
  • Power: VDD
  • Ground: GND_1, GND_2
  • Interface: SCL, SDA
  • Control: ADD_SEL, ~RESET, ~INT
  • GPIO: GPIO12 and BUTTON0/GPIO0 through BUTTON11/DS/GPIO11
Review and document
Run ERC review
Verify package mapping
Document pin grouping
Check naming consistency

Name
Pin #
Type
Section
Pin Group
Orientation
Order
Sub-symbol
SCL
1
Input
Interface
Interface
Right
4
ADD_SEL
2
Input
Control
Control
Right
2
GND_1
3
Ground
Ground
Ground
Bottom
5
VDD
4
Power In
Power
Power
Top
1
BUTTON0/GPIO0
5
Bi-Directional
GPIO
GPIO
Left
3
BUTTON1/GPIO1
6
Bi-Directional
GPIO
GPIO
Left
3
BUTTON2/GPIO2
7
Bi-Directional
GPIO
GPIO
Left
3
BUTTON3/GPIO3
8
Bi-Directional
GPIO
GPIO
Left
3
BUTTON4/GPIO4
9
Bi-Directional
GPIO
GPIO
Left
3
BUTTON5/GPIO5
10
Bi-Directional
GPIO
GPIO
Left
3
~INT
11
Output
Control
Control
Right
2
GPIO12
12
Bi-Directional
GPIO
GPIO
Left
3
BUTTON6/GPIO6
13
Bi-Directional
GPIO
GPIO
Left
3
BUTTON7/GPIO7
14
Bi-Directional
GPIO
GPIO
Left
3
BUTTON8/GPIO8
15
Bi-Directional
GPIO
GPIO
Left
3
BUTTON9/GPIO9
16
Bi-Directional
GPIO
GPIO
Left
3
BUTTON10/GPIO10
17
Bi-Directional
GPIO
GPIO
Left
3
BUTTON11/DS/GPIO11
18
Bi-Directional
GPIO
GPIO
Left
3
~RESET
19
Input
Control
Control
Right
2
SDA
20
Bi-Directional
Interface
Interface
Right
4
GND_2
21
Ground
Ground
Ground
Bottom
5

MTCH2120-V/REB