Manual De UsuarioTabla de contenidos1. SIM8905A Description31.1. Summarize31.2. Feature31.3. Pin51.4. Picture61.5. Dimension72. Detail Block Diagram83. Interface Application8Power Supply8Power on/off10Power on10Power off11VRTC11Output Power Management12USB Interface12Linear Battery Charger13Charging Control13VBAT_SNS14UART/SPI/I2C14Secure Digital Interface15Display Interface15Touch Screen Interface16Camera Interface17Audio18Microphone19Headset20Earpiece21Speaker21Microphone bias22USIM Interface23ADC24Vibrator24Antenna Interface25MAIN Antenna reference circuit25DRX Antenna reference circuit26PCB Layout27Stack-up Options27General Placement Guidelines27PCB Layout Guideline Details27RF Trace27Power/GND27USIM Card27MIPI_DSI/CSI28USB28SDC Signal29Audio29Electrical and Reliability31Absolute Maximum Ratings31Temperature Range31Operating Voltage31Digital-logic Characteristics32PWRKEY Characteristics33VRTC Characteristics33Current Consumption (VBAT=3.9V)33Electro-Static Discharge33Module Operating Frequencies34Module Output power34Module Receiving Sensitivity35Tamaño: 2 MBPáginas: 36Language: EnglishManuales abiertas