Power Supply Configuration; Clock Configuration - Renesas RX100 Series User Manual

Renesas Starter Kit for RX140

6.4 Power Supply Configuration

Table 6-3 below details the function of the option links associated with Power Supply Configuration.
Reference
Unregulated_VCC
JA1-5V
Board_5V
JA1-3V3
Board_3V3
UC_VCC
Power Supply IC
output
Table 6-4 below details the function of the jumpers associated with the Power Supply Configuration.
Reference
J9(DNF)
*1
J6
J7
: Jumper J9 is not fitted on the default CPU board. Same as Jumper Position "shorted" setting by
*1
resistor R268.

6.5 Clock Configuration

Table 6-5 below details the function of the option links associated with Clock Configuration.
Reference
XTAL, EXTAL
XCIN, XCOUT
R20UT5026EG0100 Rev.1.00
Jan 17, 2022
Table 6-3: Power Supply Configuration Option Links
Explanation
Connect 5V power rail to Unregulated_VCC.
Connect 5V power rail to JA1-5V.
Connect 5V power rail to Board_5V.
Disconnect JA1-3V3 from Power Supply
(Power supply source: E2 Lite (3.3V), JA1-3V3)
Connect JA1-3V3 to Power Supply IC output. (Power
supply source: Unregulated_VCC, JA1-5V)
Disconnect Board_3V3 from
(Power supply source: E2 Lite (3.3V), JA1-3V3)
Connect Board_3V3 to Power Supply IC output. (Power
supply source: Unregulated_VCC, JA1-5V)
Connect UC_VCC to Board_VCC power rail.
Enable current probe for measurement MCU current
consumption.
3.3V
1.8V
Table 6-4: Power Supply Configuration Jumper Settings
Jumper Position
Shorted
All open
Shorted Pin 1-2
Shorted Pin 2-3
All open
Shorted
All open
Table 6-5: Clock Configuration Option Links
Explanation
Connect 8MHz crystal (X1) to RX140.
Connect JA2-EXTAL to RX140.
Connect 32.768kHz crystal (X2) to RX140.
Disconnect X2 from RX140.
IC output.
Power Supply IC output.
Explanation
Connect UC_VCC to Board_VCC power rail.
Enable current probe for measurement MCU current
consumption.
Connect Board_3V3 to Board_VCC.
Connect Board_5V to Board_VCC.
DO NOT SET.
Connect Power Supply IC output to Board_3V3.
Disconnect Power Supply IC output from Board_3V3.
R86, R85
R64, R63
R88, R87
R12
6. Configuration
Fit DNF
R251 -
R250 -
- -
R266 J7.Open
R266, J7.Short -
- J7.Open
J7.Short -
J9.Short or R268 -
J9.Open,
-
R37 R44
R44 R37
Fit DNF
R64, R63
R86, R85
R12
R88, R87
R268
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