Renesas H8SX/1648 - Manual (Page 16)

Table 6-8 below describes the function of the option links associated with power source. The default configuration is indicated by BOLD
text.
Option Link Settings
Reference Function Fitted Alternative (Removed) Related To
R178 Power source Enables power from E8. Disable E8 power source
R179 Power source Board can be powered from
external source CON_3V3 (JA1
header pin 3)
Board can’t be powered from
external source CON_3V3 (JA1
header pin 3)
R181
R180 Power source Enables power from external
source.
Disable external power connector.
R181 Power source Fitted if board is not powered
from external source CON_3V3
(JA1 header pin 3)
Removed if board is powered from
external source CON_3V3 (JA1
header pin 3)
R179, R182
R182 Power source Enables power to board
peripheral devices.
Disconnects power from board
peripheral devices.
R179, R183
R183 Power source Board can be powered from
external source CON_5V (JA1
header pin 1)
Board can’t be powered from
external source CON_5V (JA1
header pin 1).
R179, R182
R184 Ground Enables ground connection to
ADC module.
Disconnects ground connection to
ADC module.
R186 MCU power
supply
Supply to MCU. CPU current can be measured
across R186
R240 Power source Enables VCC power to I2C
module, disconnects 5V power
from I2C module.
Disconnects VCC power from I2C
module, enables 5V power to I2C
module
R241
R241 Power source Enables 5V power to I2C module,
disconnects VCC power from I2C
module.
Disconnects 5V power from I2C
module, enables VCC power to
I2C module.
R240
Table 6-8: Power configuration links.
Table 6-9 below describes the function of the option links associated with clock configuration. The default configuration is indicated by
BOLD text.
Option Link Settings
Reference Function Fitted Alternative (Removed) Related To
R215 Clock Oscillator On-board clock source is used External clock source is used
R218 Clock Oscillator On-board clock source is used External clock source is used
R219 Clock Oscillator Parallel resistor for a crystal Not fitted
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