| 전자부품 데이터시트 검색엔진 |
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SIM800C 데이터시트(PDF) 14 Page - SIMCom |
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SIM800C 데이터시트(HTML) 14 Page - SIMCom |
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14 / 52 page ![]() Smart Machine Smart Decision SIM800C_Hardware_Design_V1.02 14 2015-4-27 VRTC 28 I/O Power supply for RTC It is recommended to connect with a battery or a capacitor (e.g. 4.7uF). VDD_EXT 40 O 2.8V power output If these pins are unused, keep open. GND 8,13,19,21,27,30, 31,33,36,37 Ground GND for VBAT recommend to use 36,37pin Power on/down PWRKEY 39 I PWRKEY should be pulled low at least 1 second and then released to power on/down the module. Internally pulled up to VBAT. Audio interfaces MICP 9 MICN 10 I Differential audio input SPKP 11 SPKN 12 O Differential audio output If these pins are unused, keep open. GPIO NETLIGHT 41 O Network status STATUS 42 O Power on status Serial port UART1_DTR 6 I Data terminal ready UART1_RI 7 O Ring indicator UART1_DCD 5 O Data carrier detect UART1_CTS 4 O Clear to send UART1_RTS 3 I Request to send UART1_TXD 1 O Transmit data UART1_RXD 2 I Receive data UART2_TXD 22 O Transmit data UART2_RXD 23 I Receive data If these pins are unused, keep open. Debug interface USB_VBUS 24 I USB_DP 25 I/O USB_DN 26 I/O Debug and download If these pins are unused, keep open. ADC ADC 38 I 10bit general analog to digital converter If these pins are unused, keep open. SIM card interface SIM_VDD 18 O Voltage supply for SIM card. Support 1.8V or 3V SIM card SIM_DATA 15 I/O SIM data input/output SIM_CLK 16 O SIM clock SIM_RST 17 O SIM reset All signals of SIM interface should be protected against ESD with a TVS diode array. SIM_DET 14 I SIM card detection If these pins are unused, |
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