... call connection mode; 9,100 M LAN integration; 10,170 pins, leads the CPU features available. See ... Device Interface 3 way 232, 3-way TTL serial port; 4,100 M network interface 6, TV and CVBS ... 8, RTC rechargeable battery; 9,5 V power input 10,10 keys, the layout of the phone; 11, reset ... speaker interfaces; 15, IIC ADC SPI Interface 16,10-bit code switch BOOT Stubbs; 17, SIM300 GPRS module interface 18 ...