LinkIt 2523 HDK v11 User's Guide
© 2015 - 2016 MediaTek Inc.
Page 34 of 82
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Figure 19. The positions of UART and I2C pin header for debugging facilitation
4.16.
Connectors
The LinkIt 2523 HDK supports connectors to capture a signal, plug-in an external component, update an image and
more. This section provides details and pin definitions for the connectors.
4.16.1.
UART pin header
The
UART
pin header is reserved for user applications that can be configured for different modes, such as UART,
GPIO and EINT (see Figure 19).
4.16.2.
I2C pin header
The
I2C
pin header is reserved for user applications that can be configured for different modes, such as GPIO and
I2C (see Figure 19).
Note, the pull-up resistors are needed for the I2C interface to provide the sufficient driving power to the I2C clock
and data lines. The two pull-up resistors R1003 and R1002 are already installed for the I2C interface, as shown in
4.16.3.
Battery connector CON2102
The pin configuration of the battery connector CON2101 is shown in Table 18.
Table 18. Battery connector CON2101 (see Figure 18)
Pin number
Description
Pin number
Description
1
VBAT
2
VBAT
3
NC
4
NTC
5
GND
6
NC
4.16.4.
Push-Push micro SD tray CON4101
The push-push micro SD tray is able to read micro SD card directly to conveniently provide data from the storage.
Connector details are shown in Table 19. The connector location is shown in Figure 10 and the schematic view is in
