1, two (TJ1050) CAN interface
2, IO port partially elicited, including all types of IO
3. External expansion of 1M SRAM IS62WV51216
4, FSMC driver LCD interface
5, W25Q128 of FLASH 16M
6, EEPROM AT24C02
7, TF card slot (self projectile micro SD slot)
8, two USB HS (because no external expansion of high-speed chips can only run in full speed mode) FS (USB OTG...)
9, serial port 1-RS232 interface
10, serial port 2-RS485 interface
11, serial port 3-TTL, serial port 5-TTL, serial port 6-TTL
12, Bluetooth and WIFI interface
13, VS1053 and WM8978 music module interface
14, OV2640 camera interface
15, DP83848--RJ45 net mouth
16, 4 independent keys
17, 3 LED
18, infrared receiver tube interface (not with HS0038)
19. Temperature sensor interface (not with 18B20)
20, buzzer
21, RTC circuit: the crystal oscillator adopts the official recommended crystal parameters and matching capacitance 6P, and so on.
RTC is not afraid of vibration, such as the use of cylindrical 32.768K crystal.
There may be no vibration.
* * introduction of the external interface * * *