TTP258 Datasheet, PDF (19/44 Pages) Tontek Design Technology – Preliminary

Preliminary
TTP258
TonTouch^TM
§ Peripheral function description:
P-1: System clock pre-scale
The system clock almost is the most high frequency of MCU. For various peripherals,
application needs different clock source divided from system clock. TCPFS register is a
selector for choosing suitable frequency (FS).
— TCPFS[20CH]: System clock pre-scale register[R/W], default value [0000]
Register
Bit3
Bit2
Bit1
Bit Name
-
FS2
FS1
Read/Write
-
R/W
R/W
FS2~FS0: the selector value of TCPFS register
Bit0
FS0
R/W
FS2 ~ FS0
0
1
2
3
FS
OSCH/1
OSCH/2
OSCH/4
OSCH/8
FS2 ~ FS0
4
5
6
7
FS
OSCH/16
OSCH/32
OSCH/64
OSCH/128
16’/04/06
Page 19 of 44
Ver.: 1.2