Divider; When Subsystem Clock Is Not Used - NEC mPD780208 Subseries User Manual

5.4.3 Divider

The divider divides the main system clock oscillator output (f

5.4.4 When subsystem clock is not used

If it is not necessary to use the subsystem clock for low power consumption operations and clock operations,
connect the XT1 and XT2 pins as follows.
XT1: Connect to V
XT2: Leave open
In this state, however, some current may leak via the internal feedback resistor of the subsystem clock oscillator
when the main system clock stops. To prevent this from happening, set bit 6 (FRC) of the processor clock control
register (PCC) to disable use of the above internal feedback resistor. In this case also, connect the XT1 and XT2
pins as described above.
CHAPTER 5 CLOCK GENERATOR
or V
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User's Manual U11302EJ4V0UM
) and generates various clocks.
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