The copyright of this document is owned by Fibocom Wireless Inc., and the document shall not be replicated without approval.
SC806Hardware User ManualPage29 of 70
it needs to be powered by the external power. The button battery is generally used for power supply. The VRTC
parameters are as follows:
Table7VRTC parameters
Parameters
Minimum
Typical
Maximum
Unit
VRTC output voltage
2.5
3.1
3.2
V
VRTC input voltage (clock
normal)
2.0
3.0
3.25
V
VRTC input current (clock
normal)
5
10
uA
VRTC as RTC clock backup power reference design circuit is shown as follows:
Figure 5VRTC Reference Design Circuit Diagram
3.2.4
Power Output
The SC806 has multiple power outputs for peripheral circuits.
When applied, 33pF and 10pF capacitors can be connected in parallel to effectively remove high frequency
interference.
Table8Power description
Pin Name
Programmable Range (V)
Default Voltage (V)
Drive Current (mA)
VDD_1V8_L5
-
1.8
200
VDD_1V8_L6
-
1.8
200
VDD_2V85_L17
-
2.85
420
VDD_SD_L12
-
2.95
50
