Renesas Starter Kit+ for RX72N
6. Configuration
R20UT4443EG0100 Rev. 1.00
Page 31 of 57
Nov 30, 19
6.4
Power Supply Configuration
below details the function of the option links associated with Power Supply Configuration.
Table 6-4: Power Supply Configuration Option Links
Reference
Configuration
Fit
DNF
Related Links
VBUS0
Connect 5V Power rail to VBUS0.
J17.shorted,
J8.Pin1-2
-
U5.1, U5.2
Unregulated_VCC
Connect 5V power rail to
Unregulated_VCC
.
R405
-
U5.1, U5.2
JA1-5V
Connect 5V power rail to
JA1-5V
.
R415
-
U5.1, U5.2
USB_5V
Connect 5V power rail to
USB_5V
.
R416
-
U7.2, U7.3, U9.6
Board_5V
Connect 5V power rail to Board_5V.
-
-
U5.1, U5.2
, U3.8
SD_3V3
Connect 3.3V power rail to SD_3V3.
R414
-
U6.2, U6.3
JA1-3V3
Connect 3.3V power rail to JA1-3V3.
R130
-
JA1.3
Board_3V3
Connect 3.3V power rail to Board_3V3.
-
-
U3.8 and many devices
UC_VCC
Connect 3.3V power rail to UC_VCC.
J14.Short or
R85
-
U1, R13, R71, R81
Enable current probe for measurement MCU
current consumption.
-
J14.Open
and R85
U1, R13, R71, R81
VBATT
Connect UC_VCC power rail to VBATT.
R83
R84
U1
J13 connected to VBATT of MCU
R84
R83
U1
*1
: J13 is a power connector for VBATT, not a jumper. Do not short-circuit J13 Pin 1 and Pin 2 because the
power supply is directly connected to ground.
below details the function of the jumpers associated with the Power Supply Configuration.
Table 6-5: Power Supply Configuration Jumper Settings
Reference
Jumper Position
Configuration
Related Links
J14(DNF)
*1
Shorted
Connect 3.3V power rail to UC_VCC.
R85
All open
Enable current probe for measurement MCU current
consumption.
J17(DNF)
*2
Shorted
Enable VBUS0.
J9
All open
Disable VBUS0
J9
*1
: Jumper J14 is not fitted on the default CPU board. Fitting resistor R85 has the same effect as "shorting"
jumper J14.
*2
: Jumper J17 is not fitted on the default CPU board.
6.5
Clock Configuration
below details the function of the option links associated with Clock Configuration.
Table 6-6: Clock Configuration Option Links
Reference
Configuration
Fit
DNF
Related Links
XTAL, EXTAL
Connect 24MHz crystal (X1) to RX72N.
R19, R24
R17
,
R29
U1.H1, U1.J1
Connect JA2-EXTAL to RX72N.
R17
R19, R24,
R29
U1.J1
XCIN, XCOUT
Connect 32.768kHz crystal (X2) to RX72N.
R38, R33
R41, R37
U1.F1, U1.G1
Disconnect X2 from RX72N.
R41
R38, R33,
R37
-
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