Table
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| PIN |
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| Pin |
| Name |
| Direction |
| Function |
| Connection |
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| Required |
|
| 1 |
| GND |
| - |
| Ground |
| Yes |
|
| 2 |
| VCC |
| Input |
| DC power |
| Yes |
|
| 3 |
| GND |
| - |
| Ground |
| Yes |
|
| 4 |
| VCC |
| Input |
| DC power |
| Yes |
|
| 5 |
| GND |
| - |
| Ground |
| Yes |
|
| 6 |
| VCC |
| Input |
| DC power |
| Yes |
|
| 7 |
| GND |
| - |
| Ground |
| Yes |
|
| 8 |
| VCC |
| Input |
| DC power |
| Yes |
|
| 9 |
| GND |
| - |
| Ground |
| Yes |
|
| 10 |
| VCC |
| Input |
| DC power |
| Yes |
|
| 11 |
| GND |
| - |
| Ground |
| Yes |
|
| 12 |
| VCC |
| Input |
| DC power |
| Yes |
|
| 13 |
| CHG_IN |
| Input |
| Battery charger power |
|
|
|
| 14 |
| SIMVCC |
| Output |
| 1.8V or 3.0V SIM card supply |
| Yes1 |
|
| 15 |
| SIMRST |
| Output |
| SIM card reset signal |
| Yes1 |
|
| 16 |
| SIMCLK |
| Output |
| SIM card clock signal |
| Yes1 |
|
| 17 |
| SIMDAT |
| In/Out |
| SIM card data |
| Yes1 |
|
| 18 |
| SIMDET |
| Input |
| SIM presence detection |
| Yes1 |
|
| 19 |
| Reserved |
| - |
| - |
|
|
|
| 20 |
| SERVICE |
| Input |
| Flash programming enable signal |
|
|
|
| 21 |
| PON_H |
| Input |
| Device on control |
| Yes2 |
|
| 22 |
| Reserved |
| - |
| - |
|
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|
| 23 |
| Reserved |
| - |
| - |
|
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| 24 |
| Reserved |
| - |
| - |
|
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| 25 |
| Reserved |
| - |
| - |
|
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| 26 |
| Reserved |
| - |
| - |
|
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| 27 |
| ADIN1 |
| Input |
| ADC Input 1 |
|
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| 28 |
| ADIN2 |
| Input |
| ADC Input 2 |
|
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| 29 |
| ADIN3 |
| Input |
| ADC Input 3 |
|
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|
| 30 |
| ADIN4 |
| Input |
| ADC Input 4 |
|
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|
| 31 |
| VRTC |
| Input |
| DC supply for real time clock |
|
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| 32 |
| ALARM |
| Output |
| RTC alarm |
|
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| 33 |
| PON_L |
| Input |
| Device on/off control |
| Yes2 |
|
| 34 |
| VUSB |
| Output |
| USB DC power |
| Yes3 |
|
| 35 |
| USBDP |
| In/Out |
| USB data positive |
| Yes3 |
|
| 36 |
| USBDN |
| In/Out |
| USB data negative |
| Yes3 |
|
37 |
| LED1 |
| Output |
| LED control |
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LZT 123 1836 |
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