The PWR_EN input is pulled to VCC_3V3 on the Mercury+ XU6 SoC module with a 4.7 kΩ resistor. The
PWR_GOOD signal is pulled to VCC_3V3 on the Mercury+ XU6 SoC module with a 4.7 kΩ resistor.
PWR_GOOD is an open collector signal and must not be used to drive a load directly. This signal is pulled
to GND if the on-board regulators fail or if the module is disabled via PWR_EN. The list of regulators that
influence the state of PWR_GOOD signal is provided in Section 2.11.1.
Pin Name Module Connector Pin Remarks
PWR_EN A-10
Floating/3.3 V: Module power enabled
Driven low: Module power disabled
PWR_GOOD A-12
0 V: Module supply not ok
3.3 V: Module supply ok
Table 14: Module Power Status and Control Pins
Warning!
Do not apply any other voltages to the PWR_EN pin than 3.3 V or GND, as this may damage the Mer-
cury+ XU6 SoC module. PWR_EN pin can be left unconnected.
Do not power the VCC_IO pins (for example by connecting VCC_3V3 to VCC_IO directly) if PWR_EN is
used to disable the module. In this case, VCC_IO needs to be switched off in the manner indicated in
Figure 10.
2.11.3 Voltage Supply Inputs
Table 15 describes the power supply inputs on the Mercury+ XU6 SoC module. The VCC voltages used as
supplies for the I/O banks are described in Section 2.9.5.
Pin Name Module Connector Pins Voltage Description
VCC_MOD A-1, 2, 3, 4, 5, 6, 7, 8, 9, 11 5 - 15 V ±5% Supply for the 0.72/0.85/0.9 V, 0.85/0.9 V, 0.9
V, 1.2 V, 1.8 V, 3.3 V and 5.0 V voltage regula-
tors. The 2.5 V supply is generated from the
3.3 V supply. The input current is rated at 3 A
(0.3 A per connector pin).
VCC_BAT A-168 2.0 - 5.5 V Battery voltage for MPSoC battery-backed
RAM and battery-backed RTC. The voltage
range applies to the default assembly option
(with LDO).
Table 15: Voltage Supply Inputs
D-0000-464-001 30 / 58 Version 02, 21.07.2021
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