Electrical Specifications - Seco SM-C12 User Manual

Smarc rel. 2.0 compliant module with nxp i.mx 8m applications processors

Table of Contents

2.3 Electrical Specifications

According to SMARC specifications, the SM-C12 module needs to be supplied only with an external +5V

For Real Time Clock working and CMOS memory data retention, it is also needed a backup battery voltage. All these voltages are supplied directly through card

edge fingers (see connector's pinout).

All remaining voltages needed for board's working are generated internally from +5V

2.3.1 Power Consumption

SM-C12 module, like all SMARC modules, needs a carrier board for its normal working. All connections with the external world come through this carrier board,

which provide also the required voltage to the board, deriving it from its power supply source.

Anyway, it has been possible to measure power consumption directly on VDD_IN power rail (5V

Idle

GPU working at full load, video output on LVDS

VPU working, video reproduction of a 1080p 60fps video on HDMI

RTC Power consumption on VDD_RTC (when VDD_IN off)

Please consider that power consumption is strongly dependent on the board's configuration, on number of processor cores active and from the interfaces that are

SW enabled.

2.3.2 Power Rails meanings

In all the tables contained in this manual, Power rails are named with the following meaning:

VDD_IN: Module power input voltage. +5V voltage directly coming from the card edge connector.

VDD_RTC: Low current RTC circuit backup power. 3V coin cell voltage coming from the edge card for supplying the RTC clock on the I.MX 8M

+3.3V_S: +3.3 switched voltage, derived internally.

+1.8V_S: +1.8 switched voltage, derived internally.

Status

power supply.

power rail.

)that supplies the board.

Processor