Renesas H8SX/1668R User Manual page 18

Reference Function
R93 32.768 KHz
Clock Oscillator
R94 32.768 KHz
Clock Oscillator
R103 32.768 KHz
Clock Oscillator
R105 32.768 KHz
Clock Oscillator
R98 32.768 KHz
Clock Oscillator
R99 12 MHz Clock
Oscillator
R102 12 MHz Clock
Oscillator
R101 12 MHz Clock
Oscillator
R100 12 MHz Clock
Oscillator
Table 6-10 below describes the function of the option links associated with reference voltage source. The default configuration is indicated
by BOLD text.
Reference Function
R64 Voltage
Reference
Source
R83 Voltage
Reference
Source
Table 6-11 below describes the function of the option links associated with analog power supply. The default configuration is indicated by
BOLD text.
Option Link Settings
Fitted
Routes OSC1 CPU pin to J3 header
Routes OSC2 CPU pin to J3 header
On-board low-speed clock source
is used
On-board low-speed clock source
is used
Parallel resistor for a crystal
Routes EXTAL CPU pin to J3
header.
Routes XTAL CPU pin to J3 and JA2
headers
On-board main clock source is
used
Parallel resistor for a crystal
Table 6-9: Clock configuration links.
Option Link Settings
Fitted
Voltage Reference set to
Board_ Vcc signal.
Voltage Reference is taken from
external connector.
Table 6-10: Voltage reference links.
16
Alternative (Removed)
OSC1 CPU pin and J3 header
are not connected
OSC2 CPU pin and J3 header
are not connected
External clock source is used
External clock source is used
Not fitted
EXTAL CPU pin and J3 header
are not connected
XTAL CPU pin and J3 and JA2
headers are not connected
External clock source is used
Not fitted
Alternative (Removed)
Voltage Reference taken from
external connector.
Voltage Reference set to
Board_Vcc signal.
Related To
R94, R103,
R105
R93, R103,
R105
R93, R94, R104
R94, R93, R103
-
R102, R101,
R100
R99, R101,
R100
R99, R102
-
Related To
R83
R64