User Manual

Minew Technologies
URL：www.minewtech.com Tel：[phone] Email: [e-mail]
4
5. Pin definition
Pin symbol
Pin type
Definition
VDD
Power
Power supply
DCC
Power
DC/DC converter output pin
GND
Power
Ground
DEC4
Power
1V3 regulator supply decoupling.
Input from DC/DC converter. Output
from 1.3 V LDO
SWDIO
Digital I/O
Hardware debug and flash programming I/O
SWCLK
Digital input
Hardware debug and flash programming I/O
P0.00 to P0.31
Digital I/O
General purpose I/O pin
XL2
Analog output
Connection for 32.768 kHz crystal
XL1
Analog input
Connection for 32.768 kHz crystal or external 32.768 kHz
NFC1
NFC input
NFC antenna connection
NFC2
NFC input
NFC antenna connection
RESET
Digital input
Configurable as system RESET pin