Datasheet

Vybrid Power Consumption and Options, Rev. 0
Freescale Semiconductor 3
Working set
Figure 1. Current measuring workstation
The workstation is comprised of four precise multimeters, a power supply unit, a universal multimeter, and
an oscilloscope. Current measurement units are synchronized using the external trigger input and the start
button for measuring simultaneously. The oscilloscope is used to check the clock frequency using Vybrid
clock-out pins.
The Freescale Tower System was used in the following configurations:
• TWR-VF65GS10 Main control module with Vybrid SoC
• TWR-ELEV Elevator module: primary and secondary elevator module
• TWR-LCD-RGB: color display module with touch sense 480 x 272 pixels
• TWR-SER2: Dual Ethernet communication module with RS232 (USB), CAN and RS485
Four different measuring points were assessed. They are defined in the Table 1.
Table 1. Measuring points
Power supply 5V Whole tower system power supply 5V TFR-VF65 name
I_P3V3 3.3 V power supply for whole tower system - bulk power source -
takes current from 5V
J18
I_3V3_MCU 3.3V power supply for MCU: IO, Internal LDO, External LDO =
including I_1V2_Core
J4
I_1V5_SDRAM 1.5V power supply for Vybrid part of SDRAM circuits - not including
SDRAM (DDR3) external memory
J10
I_1V2 Core 1.2V power supply for the core and analog front end AFE - use
internal LDO with external transistor - supplied from 3V3 MCU
Q1 pin 3 - manually
added jumper
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