User's Manual

DFCE-NNN40-DTxR
mbed Kit User Guide Sheet 10 of 15 Aug 11, 2015
Proprietary Information and Specifications are Subject to Change
4.2 Kit PIN OUT
DELTA DFCE-NNN40 has a default profile pin out. The board has reserved SPI, I2C, ADC,
UART and GPIO pin to access. The following is the detail of description for pin out.
 1.8V pin
The voltage of power supply for BLE module is 1.8V. All BT GPIO (P4~P29), are connected
to BLE SoC. It is notice that the voltage should be 1.8V.
 3.6V pin
There are pins are passed through level shift to convert from 1.8V to 3.6V. Those are
SCL_3V6, SDA_3V6, STLK_TX, and STLK_RX.
 RF switch pin
To switch RF antenna to BLE or Wi-Fi, it is controlled by gpio pin SWIO, P19.
 Use j-link to load image to BLE module directly
It is able to use j-link to load image to BLE module directly. The R124 and R125 should be
removed. The SWDIO and SWDCLK is then accessible on CN7 pin 25, 23 respectively.
 ADC function
P04, P05, P06, P26, P27 could be to ADC function. It is notice that only P06 could be
configure to reference ADC voltage (ADC/LPCOMP reference input 0 and in input 1). Only
one of the modules can be enabled at the same time.