User's Manual l TQMaRZG2x UM 0100 l © 2021, TQ-Systems GmbH
Page 29
3.5.3
Power consumption RTC
Table 34:
RTC power consumption
Mode of operation
Min.
Typ.
Max.
V
BAT
, RTC active
1.8 V
3 V
4.5 V
I
BAT
, RTC active
–
18 µA
50 µA
V
BAT
, RTC inactive
0.9 V
3 V
4.5 V
I
BAT
, RTC inactive
–
220 nA
600 nA
3.5.4
Power supply outputs
Depending on the function, some IO rails of the RZ/G2x have different voltages. These IO rails are routed to the TQMaRZG2x
connectors and can be supplied externally. No additional switching regulators are required on the carrier board. The 1.8 V and
3.3 V generated on the TQMaRZG2x are available at the connectors for this purpose.
The following table shows the supply outputs provided by the TQMaRZG2x that can be used on the carrier board.
Table 35:
TQMaRZG2x supply outputs
Voltage
Level
I
max
Usage
V_3V3
3.3 V
200 mA
For Boot Configuration and IO rail VDDQVA_SD[3:0]
V_1V8
1.8 V
200 mA
For IO rail VDDQVA_SD[3:0]
V_BAT
3 V
–
Via low-leakage diode at internal 3.3 V supply
Attention: Destruction or malfunction, overload
The voltages mentioned are outputs and must not be supplied externally under any circumstances.
The outputs are not short-circuit proof.
If the voltages are exceeded, there is a risk of malfunction and damage to components.
An overload at one of the voltage outputs may reset the TQMaRZG2x.
