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CHAPTER 8 16-BIT TIMER/EVENT COUNTER
185
(6) Sampling clock select register (SCS)
This register sets clocks which undergo clock sampling of valid edges to be input to INTP0. When remote
controlled reception is carried out using INTP0, digital noise is removed with sampling clock.
SCS is set with an 8-bit memory manipulation instruction.
RESET input sets SCS value to 00H.
Figure 8-9. Sampling Clock Select Register Format
Caution
f
X
/2
N+1
is the clock supplied to the CPU, and f
X
/2
6
and f
X
/2
7
are clocks supplied to peripheral
hardware. f
X
/2
N+1
is stopped in HALT mode.
Remarks
1.
N: Value set in bit 0 to bit 2 (PCC0 to PCC2) of the processor clock control register (PCC) (N = 0
to 4)
2.
f
X
: Main system clock oscillation frequency
3.
Values in parentheses apply to operation with f
X
= 10.0 MHz.
Symbol
7
6
5
4
3
2
1
0
Address
When Reset
R/W
SCS
0
0
0
0
0
0
SCS1
SCS0
FF47H
00H
R/W
SCS1
SCS0
INTP0 Sampling Clock Selection
0
0
f
X
/2
N+1
0
1
Setting prohibited
1
0
f
X
/2
6
(156 kHz)
1
1
f
X
/2
7
(78.1 kHz)
Содержание 78014Y Series
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