MIKROE-972 mikroElektronika, MIKROE-972 Datasheet - Page 18

• Manufacturer Part Number: MIKROE-972
• Description: Development Boards & Kits - ARM EASYMX PRO v7 ARM STELLARIS CORTEX-M3
• Manufacturer: mikroElektronika

Specifications of MIKROE-972

• Rohs: yes
• Product: Development Boards
• Tool Is For Evaluation Of: LM3S9B95
• Core: ARM Cortex M3
• Interface Type: CAN, I2C, SPI
• Operating Supply Voltage: 7 VAC to 23 VAC, 9 VDC to 32 VDC

Figure 6-2:
Tri-state DIP
switch on PORTE
page 18
PORTE LEVEL
Tri-state pull-up/down DIP switches
SW16
BUTTON PRESS LEVEL
side of the board too.
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
Tri-state DIP switches, like SW5 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.
J7
R27
220
J6
R26
220
together. It makes development easier, and the entire EasyMx PRO
PORT headers, PORT buttons and PORT LEDs next to each other and grouped
VCC-3.3V
Button press level tri-state DIP
switch is used to determine
which logic level will be
applied to port pins when
buttons are pressed
Everything is grouped together
Figure 6-3: Schematic of the single I/O group connected to microcontroller PORTE
of the board.
groups. They add so much to the connectivity potential
PRO
One of the most distinctive features of EasyMx
™
v7 for Stellaris
Input/Output Group
®
are it’s Input/Output PORT
PORTE LED
™
SW15
v7 for Stellaris
LD40
DATA BUS
RN31
10K
T31
LD41
®
RN32
10K
T32
Figure 6-1: I/O group contains PORT header, tri-state pull
up/down DIP switch, buttons and LEDs all in one place
LD42
VCC-3.3V
DOWN
RN33
10K
PULL
T33
4K7
UP
+
_
LD43
1 2 3 4 5 6 7 8
RN34
10K
SW5
T34
LD44
RN35
10K
T35
VCC-3.3V
LD45
PE0
PE2
PE4
PE6
RN36
10K
EasyMx PRO
CN24
T36
LD46
PE1
PE3
PE5
PE7
RN37
10K
VCC-3.3V
T37
PE0
PE2
PE4
PE6
LD47
CN33
RN38
10K
T38
PE1
PE3
PE5
PE7
v7