DC 3.3V(Note: for 3.3V power supply, please use LDO chip for power supply. If other power supply methods are used, it is recommended to add a load resistance of 120 Ω ~ 180 Ω 0805 specification or above between power supply 3.3V and power ground to improve system stability.)
Environmental Specification
Working temperature
-20—60℃
Storage temperature
-40—70℃
Environmental humidity
10—90%RH(no condensation)
Vibration resistance
10—25Hz(X、Y、Z direction 2G/30minutes)
Cooling mode
Natural air cooling
5、FPC Pin Definition
Pin
Definition
Explain
1
QSPI_CLK
SD card
2
QSPI_MISO
3
QSPI_CS
4
QSPI_MOSI
5
CPT_SCL
Capacitor screen I2C interface
6
CPT_SDA
7
SWCLK
Debugging port
8
SWDIO
9
CPT_INT
Capacitor screen interrupt signal
10
CPT_RST
Capacitor screen reset signal
11
RTC_SCL
RTC I2C Interface
12
RTC_SDA
13
3V3
System power supply
14
3V3
15
GND
System ground
16
GND
17
UART2_TX
Print port
18
UART2_RX
19
UART0_TX
Communication port, UART0_RX must be pulled up; 3.3V TTL level, if connected to 5V TTL, level converter should be added;