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MeiG Smart product technical information
SLM500 Hardware Design Guide Page 35
Rechargeable battery powered:
Figure 4.12： Rechargeable Battery Powers RTC
Notes：This VCOIN power supply is 2.0-3.25V, typical typically 3.0V
4.4. Power Output
The SLM500 has multiple power outputs. For LCD, Camera, touch panel, etc. In
application, it is recommended to add parallel 33PF and 10PF capacitors to each power supply
to effectively remove high frequency interference.
Table
4.2：
Power Description
Signal
Default
Voltage(V)
Drive Current(mA)
VREG_L5_1P8
1.8
100
VREG_L6_1P8
1.8
100
VREG_L10_2P8
2.8
150
VREG_L11_SDC
2.95
600
VREG_L12_SDC
2.95
50
VREG_L14_UIM1
1.8/2.95
55
VREG_L15_UIM2
1.8/2.95
55
VREG_L16_AVDD
2.8
55
VREG_L17_2P85
2.85
300
4.5. Serial Port
The SLM500 provides three serial ports for communication. And corresponding to one groups
of I2C interfaces can be multiplexed into hardware flow control, note that the I2C interface can
not be added to the UART_RTS/CTS when the pull resistor can be added.
Table
4.3：
UART Pin Description
Name
Pin
Direction
Function
GPIO0_UART1_TXD
154
I
UART1 Data Transmission