Operation Clock - Epson S1C17001 Technical Manual

15 CLOCK TIMER (TC)

15.2 Operation Clock

The clock timer uses the 256 Hz clock output by the OSC module as the operation clock.
The OSC module generates this operation clock by dividing the OSC1 clock into 1/128, resulting in a frequency of
256 Hz when the OSC1 clock frequency is 32.768 kHz. The frequency described in this section will vary accord-
ingly for other OSC1 clock frequencies.
The OSC module does not include a 256 Hz clock output control bit. The 256 Hz clock is normally fed to the clock
timer when the OSC1 oscillation is on.
For detailed information on OSC1 oscillator circuit control, refer to "7 Oscillator Circuit (OSC)."
EPSON
178 S1C17001 TECHNICAL MANUAL