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miriac MPX-S32G274A User Manual
V2.1
20/76
© MicroSys Electronics GmbH 2020
4.2
Power Structure
The MPX-S32G274A module is supplied by a single 9-30V supply. Onboard
voltages are generated by the PMIC VR5510.
For RTC backup buf f ering an additional supply f rom the carrier is necessary.
The module itself does not provide any supply voltage to the carrier but it has some
ref erence voltages that show the voltage level of the respective interf ace on the
module. If necessary, the carrier must track the ref erence voltages and generate a
copy which can carry higher loads.
The f ollowing diagram shows the structure of the power supplies:
The f ollowing table shows the internal connections:
Module Connector
Pin
Signal
I/O Range
Description
T146-T154 /
B148-B156
VIN
9-30V
Module supply input
T117
+VREF1
1.8V
Reference voltage output
T118
+VREF2
1.8V
Reference voltage output
T119
+VREF3
3.3V
Reference voltage output
T120
+VREF4
3.3V
Reference voltage output
T133
VCC_RTC
0.9V-5.5V
Optional backup supply
T134
+3V3_EXT
3.3V
Optional boot EEPROM pro-
gramming supply input
B125
VDD_OTP
N/A
Do not connect
Table 8 Module connector: power pin assignments
Figure 4-1 Power supplies: structure