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SIM900
GSM Quad-Band Communication Module, GPRS, Audio Engine, AT Command Set
Schematic Symbol
Pin Configuration (68 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | PWRKEY | input |
| 2 | NC | no_connect |
| 3 | DTR | input |
| 4 | RI | output |
| 5 | DCD | output |
| 6 | NC | no_connect |
| 7 | CTS | output |
| 8 | RTS | input |
| 9 | TXD | output |
| 10 | RXD | input |
| 11 | DISP_CLK | output |
| 12 | DISP_DATA | bidirectional |
| 13 | DISP_D/C | output |
| 14 | DISP_CS | output |
| 15 | VDD_EXT | power_out |
| 16 | ~{RESET} | input |
| 17 | GND | power_in |
| 18 | GND | passive |
| 19 | MIC_P | input |
| 20 | MIC_N | input |
| 21 | SPK_P | output |
| 22 | SPK_N | output |
| 23 | NC | no_connect |
| 24 | NC | no_connect |
| 25 | ADC | input |
| 26 | VRTC | power_in |
| 27 | DBG_TXD | output |
| 28 | DBG_RXD | input |
| 29 | GND | passive |
| 30 | SIM_VDD | power_out |
| 31 | SIM_DATA | bidirectional |
| 32 | SIM_CLK | output |
| 33 | SIM_RST | output |
| 34 | SIM_PRESENCE | input |
| 35 | PWM1 | output |
| 36 | PWM2 | output |
| 37 | SDA | bidirectional |
| 38 | SCL | output |
| 39 | GND | passive |
| 40 | GPIO1/KBR4 | bidirectional |
| 41 | GPIO2/KBR3 | bidirectional |
| 42 | GPIO3/KBR2 | bidirectional |
| 43 | GPIO4/KBR1 | bidirectional |
| 44 | GPIO5/KBR0 | bidirectional |
| 45 | GND | passive |
| 46 | GND | passive |
| 47 | GPIO6/KBC4 | bidirectional |
| 48 | GPIO7/KBC3 | bidirectional |
| 49 | GPIO8/KBC2 | bidirectional |
| 50 | GPIO9/KBC1 | bidirectional |
| 51 | GPIO10 | bidirectional |
| 52 | NETLIGHT | output |
| 53 | GND | passive |
| 54 | GND | passive |
| 55 | VBAT | power_in |
| 56 | VBAT | passive |
| 57 | VBAT | passive |
| 58 | GND | passive |
| 59 | GND | passive |
| 60 | RF_ANT | passive |
| 61 | GND | passive |
| 62 | GND | passive |
| 63 | GND | passive |
| 64 | GND | passive |
| 65 | GND | passive |
| 66 | STATUS | output |
| 67 | GPIO11 | bidirectional |
| 68 | GPIO12 | bidirectional |
Footprint
ConfirmedRF_GSM/SIMCom_SIM900
Pad Layout
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68
Pads (68)
| Number | Type |
|---|---|
| 1 | smd |
| 2 | smd |
| 3 | smd |
| 4 | smd |
| 5 | smd |
| 6 | smd |
| 7 | smd |
| 8 | smd |
| 9 | smd |
| 10 | smd |
| 11 | smd |
| 12 | smd |
| 13 | smd |
| 14 | smd |
| 15 | smd |
| 16 | smd |
| 17 | smd |
| 18 | smd |
| 19 | smd |
| 20 | smd |
| 21 | smd |
| 22 | smd |
| 23 | smd |
| 24 | smd |
| 25 | smd |
| 26 | smd |
| 27 | smd |
| 28 | smd |
| 29 | smd |
| 30 | smd |
| 31 | smd |
| 32 | smd |
| 33 | smd |
| 34 | smd |
| 35 | smd |
| 36 | smd |
| 37 | smd |
| 38 | smd |
| 39 | smd |
| 40 | smd |
| 41 | smd |
| 42 | smd |
| 43 | smd |
| 44 | smd |
| 45 | smd |
| 46 | smd |
| 47 | smd |
| 48 | smd |
| 49 | smd |
| 50 | smd |
| 51 | smd |
| 52 | smd |
| 53 | smd |
| 54 | smd |
| 55 | smd |
| 56 | smd |
| 57 | smd |
| 58 | smd |
| 59 | smd |
| 60 | smd |
| 61 | smd |
| 62 | smd |
| 63 | smd |
| 64 | smd |
| 65 | smd |
| 66 | smd |
| 67 | smd |
| 68 | smd |