TTP259
TonTouchTM
Preliminary
§ System function description:
S-1: System Oscillator
The high speed oscillator is operated in built-in RC mode. It is fixed
4MHz (typical at VDD=5V).
S-2: Peripheral Oscillator
The low speed oscillator was built-in an internal RC oscillator that is for
low power consumption consideration and fixed peripheral device timing
control. Built-in RC oscillator and the frequency range between 11 KHz~21
KHz.
S-3: CPU clock
The CPU clock comes from system/peripheral oscillator which was
controlled by H/L bit in PS register. The high speed operation frequency
comes from system oscillator. The low speed operation frequency comes
from peripheral oscillator.
2015/05/25
Page 15 of 81
Ver: 1.1