12 8-BIT TIMER (T8F)
S1C17001 TECHNICAL MANUAL
EPSON
127
12.3 Count Clock
The 8-bit timer uses the prescaler output clock as the count clock. The prescaler generates 15 different clocks by di-
viding the PCLK clock into 1/1 to 1/16 K divisions. One of these is selected by the DF[3:0] bit (D[3:0]/T8F_CLK
register).
∗
DF[3:0]
: Timer Input Clock Select Bits in the 8-bit Timer Input Clock Select (T8F_CLK) Register (D[3:0]/
0x4200)
Table 12.3.1: Count clock selection
DF[3:0]
Prescaler output clock
DF[3:0]
Prescaler output clock
0xf
Reserved
0x7
PCLK-1/128
0xe
PCLK-1/16384
0x6
PCLK-1/64
0xd
PCLK-1/8192
0x5
PCLK-1/32
0xc
PCLK-1/4096
0x4
PCLK-1/16
0xb
PCLK-1/2048
0x3
PCLK-1/8
0xa
PCLK-1/1024
0x2
PCLK-1/4
0x9
PCLK-1/512
0x1
PCLK-1/2
0x8
PCLK-1/256
0x0
PCLK-1/1
(Default: 0x0)
Note: • The prescaler must run before the 8-bit timer.
• Make sure the 8-bit timer count is halted before changing count clock settings.
For detailed information on the prescaler control, see “9 Prescaler (PSC).”
Содержание S1C17001
Страница 1: ...Technical Manual S1C17001 CMOS 16 BIT SINGLE CHIP MICROCONTROLLER ...
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