41
IE-78K0-NS-P04, IE-780948-NS-EM4
3.3 Subsystem Clock
Table 3-18: Subsystem Clock Settings
IE-78K0-NS-P04
IE-78K0-NS-A
Subsystem Clock Frequency to be Used
Parts holder (X1)
JP8
When using clock that
is already mounted on
main board
32.768 KHz
Short 6 - 8
Short 5 - 6
When using user-
mounted clock
Includes oscillator
Short 1 - 2
When using external
clock
Other than 32.768 KHz
Not used
Short 3 - 4
Caution:Jumper JP8, which is used to select the board’s clock or an external clock, should be
set only after turning off the IE-78K0-NS-A’s power.
(1) When using clock that is already mounted on main board
When the IE-78K0-NS-P04 / IE-780948-NA-EM4 are shipped, there is no 32.768 KHz crystal on the
board. The parts holder on X1 is shortened between 6 and 8. Short pins 5 and 6 of JP8 of the IE-78K0-
NS-A's main board to use the 32.768 KHz crystal of the emulator. There is no additional settings of
the integrated debugger ID78K0-NS necessary.
(2) When using the user-mounted clock on the IE-78K0-NS-P04
The settings described under either (a) or (b) are required, depending on the type of clock to be used.
Short pins 1 and 2 on the IE-78K0-NS-A’s jumper (JP8).
There is no need to make any other settings via the integrated debugger (ID78K0-NS).
(a) When using a ceramic oscillator or crystal resonator
- Items to be prepared
- Parts board (supplied with IE-78K0-NS)
- Capacitor CA
- Ceramic oscillator or crystal resonator
- Capacitor CB
- Resistor Rx
- Solder kit
<Steps>
<1> Solder onto the supplied parts board (as shown below) the target ceramic oscillator or crystal
resonator, resistor Rx, capacitor CA, and capacitor CB (all with suitable oscillation frequency).
3.3.1 Subsystem Clock Setting
Содержание IE-780948-NS-EM4
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