Power Supply Configuration; Clock Configuration - Renesas RX Series User Manual

RSKRX231
6.3

Power Supply Configuration

Table 6-3 and Table 6-4 below details the function of the option links associated with power supply
configuration.
Reference Configuration
Shorted Pin1-2
J8 *
1
All open
Shorted Pin1-2
J9 Shorted Pin2-3
All open
Fit
R244
DNF
Shorted Pin1-2
J11 Shorted Pin2-3
All open
1
* : By default, jumper J8 is not fitted to the RSK. R55 is fitted by default and becomes the same setting as 'J8
Shorted Pin1-2'.
Reference
Board_5V Connects 5V power rail to Board_5V.
SD_3V3 Connects Board_VCC to SD_3V3
Connects CON_3V3 to Board_VCC.
CON_3V3
Disconnects CON_3V3 from Board_VCC.
Board_3V3 Connects Board_VCC to Board_3V3.
Connects Board_VCC to UC_VCC.
Board_VCC
Enables current probe for MCU current
consumption.
Connects UC_VCC to VBATT.
(Battery Backup function used)
VBATT
Disconnects UC_VCC from VBATT.
(Battery Backup function unused)
Connects UC_VCC to 3.3V power rail.
UC_VCC
Disconnects UC_VCC from 3.3V power rail.
Connects UC_VCC to U1 VCC_USB pin.
(UC_VCC: 3.3V)
VCCUSB
Disconnects UC_VCC from U1 VCC_USB pin.
(UC_VCC: 5V)
6.4

Clock Configuration

Table 6-5 below details the function of the option links associated with clock configuration.
Reference
XTAL, EXTAL, Connects 8MHz crystal (X1) to RX231.
CON_EXTAL Connects CON_EXTAL to RX231.
Connects 32.768kHz crystal (X2) to RX231.
XCIN, XCOUT
Disconnects 32.768kHz crystal (X2) from RX231.
Items shown in bold are the Fit / Do Not Fit (DNF) default configuration that the RSK is supplied with.
Rev.
R20UT3027EG0100 1.00
Aug 24, 2015
Connects Board_VCC to UC_VCC.
Enables current probe for MCU current consumption.
Connects EXT_BATT to 5V power rail.
Connects VBUS0 to 5V power rail.
Disconnects EXT_BATT and VBUS0 from 5V power rail.
Enables 1.8V regulator output.
Enables 3.3V regulator output.
Connects regulator output to Board_VCC.
Disconnects regulator output from Board_VCC.
DO NOT USE
Table 6-3: Power Supply Option Links (1)
Explanation
Table 6-4: Power Supply Option Links (2)
Explanation
Table 6-5: Clock Option Links
Explanation
Fit
R80 -
R20 -
R21 -
- R21
R214 -
R55/J8.1-2 -
J8.Open
R55
R86 R85
R85 R86
R55/J8.1-2
-
J8.Open R55
R140, R139/J14.1-2 -
- R140,
Fit
R108, R109
R110
R95, R98
-
6. Configuration
DNF Related Ref.
U4, U5, U8, U10, U12
U3
JA1.3
-
U1(USB0VBUS),
U1(VCC, AVCC0,
VREFH0, VREFH)
U1(VCC, AVCC0,
VREFH0, VREFH)
-
J10
U1(VCC)
-
U1(VCC_USB)
R139, J14.Open -
DNF Related Ref.
R110, R107 U1(EXTAL, XTAL)
R108, R109 U1(EXTAL), JA2.2
- U1(XCIN, XCOUT)
R95, R98 U1(XCIN, XCOUT)
Related Ref.
R55
R55
-
J15
-
U6
U6
U6
U6
U6
PMOD1
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