Datasheet

SW1
VCC-3.3V VCC-3.3V
VCC-3.3V
UP
DOWN
PULL
1 2 3 4 5 6 7 8
+
_
CN1 CN4
PA8 PA9
PA10 PA11 PA12 PA13 PA15 PA14
PA8 PA9
PA10 PA11
PA12 PA13
PA15PA14
PA8 PA9
PA10 PA11
PA12 PA13
PA15PA14
SW10
VCC
GND
BUTTON PRESS LEVEL
R26
220
R27
220
VCC-3.3V
1 2 3 4 5 6 7
8
O
N
SW15
J7J6
1 2 3 4 5 6 7 8
+
_
PORTA_LEVEL
PORTA_LED
DATA BUS
PA8 PA9 PA10 PA11 PA12 PA13
PA15 PA14
LD8LD7LD6LD5LD4LD3LD2LD1
RN8
10K
RN7
10K
RN6
10K
RN5
10K
RN4
10K
RN3
10K
RN2
10K
RN1
10K
T8T7T6T5T4T3T2T1
PA8 PA9
PA10 PA11 PA12 PA13 PA15 PA14
page 18
One of the most distinctive features of EasyMx PRO
™
v7 for STM32 are it’s Input/Output PORT groups. They
add so much to the connectivity potential of the board.
Everything is grouped together
PORT headers, PORT buttons and PORT LEDs are next to each other, and
grouped together. It makes development easier, and the entire EasyMx PRO
™
v7
for STM32 cleaner and well organized. We have also provided an additional PORT
headers on the right side of the board, so you can access any pin you want from that side of the board too.
Tri-state pull-up/down DIP switches
Tri-state DIP switches, like SW1 on Figure 6-3, are used to enable 4K7
pull-up or pull-down resistor on any desired port pin.
Each of these switches has three states:
1. middle position disables both pull-up and pull-down
feature from the PORT pin
2. up position connects the resistor in pull-up state to
the selected pin
3. down position connects the resistor in pull-down
state to the selected PORT pin.
Figure 6-1: I/O group contains PORT header, tri-state pull
up/down DIP switch, buttons and LEDs all in one place
Input/Output Group
connectivity
Figure 6-3: Schematic of the single I/O group connected to microcontroller PORTA/H
Button press level tri-state DIP
switch is used to determine which
logic level will be applied to port
pins when buttons are pressed
Figure 6-2:
Tri-state DIP
switch on PORTA/H
EasyMx PRO
v7