Configuration; Modifying The Target Board For Rx231; Analog Power Supply; On-Chip Oscillator - Renesas RTK5RX2310C00000BR User Manual

Target Board for RX231
6.

Configuration

6.1

Modifying the Target Board for RX231

This section describes how to change the Target Board for RX231 setting by using option link resistance.
An option link resistor is a 0Ω surface mount resistor, which is used to short or isolate a part of circuits. See
the 6.2 below for the list of option links by function. Fit or remove the option link resistor to switch functions by
referring to the list. Bold fonts in blue
option links, see the chapter 3 "Part Layout".
When removing soldered components, do not press a soldering iron on the Target Board for RX231 for more than 5
seconds to avoid any damage around the target area.
6.2

Analog Power Supply

The option links for analogue power supply are shown in Table 6-1, Table 6-2, and Table 6-3.
Table 6-1: 12bit A/D, 12bit D/A
12bit A/D, 12bit D/A
Analog power supply
source
3.3V on the board
MCU Header
12bit A/D Reference
voltage supply source
3.3V on the board
MCU Header
12bit D/A Reference
power supply source
3.3V on the board
MCU Header
6.3

On-chip Oscillator

The option links for on-chip oscillator operation are shown in Table 6-4, Table 6-5.
HOCO setting
Oscillation
Stop
LOCO setting
Oscillation
Stop
R20UT4168EJ0101 Rev.1.01
Jul 20, 2018
indicates the default configuration at the shipment. For the position of
Fit DNF
R3, R6 R1, R9
R1, R9 R3, R6
Table 6-2: 12bit A/D
Fit DNF
R4, R7 R2, R8
R2, R8 R4, R7
Table 6-3: 12bit D/A
Fit DNF
R11, R12 R10, R13
R10, R13 R11, R12
Table 6-4: HOCO
Fit DNF
R19, R23 R20, R22
R20, R22 R19, R23
Table 6-5: LOCO
Fit DNF
R25 -
- R25
Analog Power Supply Option Link
-
-
Reference Voltage Option Link
-
The bypass capacitors of C6, C7, C8 are invalid.
Reference Voltage Option Link
-
The bypass capacitors of C12, C13, C14 are invalid.
Option Link
-
Mount a crystal resonator on X1 or X2 and load
capacitance on C16, C17.
Option Link
-
Mount a crystal resonator on X3 and load
capacitance on C18, C19.
6. Configuration
Remarks
Remarks
Remarks
Remarks
Remarks
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