Y-RH850-F1X-100PIN-PB-T1-V3 User’s Manual
R20UT3959ED0101, Rev. 1.01 10
2019-11-27
Chapter 4 Power supply
4.1 Board power connection
For operation of the device, a supply voltage must be connected to the board.
Though a single supply voltage is sufficient for the operation of the device, two
(different) voltages can be supplied to the board.
Within this document the following voltages are considered as ‘typical’
connections:
Voltage1 = 5.0V
Voltage2 = 3.3V
The following connectors are available to supply those voltages:
Three 4mm ‘banana-type’ connectors:
- Two red connectors for voltages Voltage1 (CN10) and
Voltage2 (CN11)
- A black connector for VSS connection on CN12
Note: The three connectors are supplied with the board but are not
assembled.
• The E1 emulator that is used for debug purposes and flash programming can
also supply a single operating voltage (‘Dbg_Voltage’).
The voltage is programmable via the E1 GUI as 3.3 or 5.0V (typ).
See the documentation of the E1 and chapter 5 ‘Debug and Programming
interface’ for details.
• In case the PiggyBoard is mounted on a MainBoard, the voltages Voltage1
and Voltage2 are supplied by the on-board regulators of the MainBoard.
NOTE: Do not supply any voltage directly to the PiggyBoard in case it is mounted
on the MainBoard.
For each of the two voltages, ‘Voltage 1 ‘ and ‘Voltage 2’, a green LED (LED1
and LED2) is available to signal that the related voltage is available on the
PiggyBoard.
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