MIKROE-972 mikroElektronika, MIKROE-972 Datasheet - Page 24

• 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

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USB-D_P
PH3
SW10
11
13
15
17
19
21
23
25
1
3
5
7
9
2
4
6
8
10
12
14
16
18
20
22
24
26
USB-PSW
USB-D_N
VCC-3.3V
MCU CARD SOCKET
R41
4K7
R42
1K
VCC-5V
R37
1K
Q1
BC846
R38
1K
100nF
C28
VCC-5V
10uF
E10
M1
ZXMP7A17K
USB-D_N
USB-D_P
Figure 10-1: USB
host connection
schematic
E11
10uF
CONNECTOR
VCC
D-
D+
GND
USB HOST
1
2
3
4
CN11
USB A
USB HOST
communication
USB is the acronym for Universal Serial
Bus. This is a very popular standard that
defines cables, connectors and protocols
used for communication and power
supply between computers and other
devices. EasyMx PRO
contains USB HOST connector (CN11)
for USB Standard Type A plug, which
enables microcontrollers that support USB
communication to establish a connection
with the target device (eg. USB Keyboard,
USB Mouse, etc). USB host also provides
the necessary 5V power supply to the
target. Maximum power which can be
drawn depends on the power consumption
of the EasyMx PRO
itself. Microcontroller USB data lines are
directly connected to MCU card socket
pins.
™
for Stellaris
™
v7 for Stellaris
®
board
®
You can enable or disable power
supply to USB device connected
to HOST, through microcontroller
PH3 pin. In order to connect power
transistor to microcontroller, you
must push SW10.7 to ON position.
Powering USB device
EasyMx PRO
Figure 10-2:
Powering
USB device
through
PSW line
v7