UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 528
UPD784026
Manufacturer Part Number
UPD784026
Description
16/8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD784026.pdf
(759 pages)
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19.1.2 Sampling Clock Selection Register (SCS0)
3.
488
The SCS0 specifies the sampling clock (f
The SCS0 can be read or written to with an 8-bit manipulation instruction. The format of SCS0 is shown in Figure 19-
RESET input clears the SCS0 register to 00H.
SCS0
7
0
6
0
Figure 19-3 Sampling Clock Selection Register (SCS0) Format
5
0
4
0
CHAPTER 19 EDGE DETECTION FUNCTION
3
0
SMP
) for digital noise elimination performed on pin P21.
2
0
SCS01
1
SCS00
0
SCS01 SCS00
0FFA4H
Address
0
0
1
1
0
1
0
1
On Reset
Sampling
Clock
(f
00H
f
f
f
f
SMP
CLK
XX
XX
XX
/64
/128
/256
)
Pulse
Width
Eliminated
as Noise
R/W
R/W
3/f
(240 ns)
192/f
(7.68 s)
384/f
(15.4 s)
768/f
(30.7 s)
CLK
XX
XX
XX
f
f
XX
CLK
=25 MHz
=12.5 MHz
Minimum
Pulse Width
Recognized
as Signal
4/f
(320 ns)
256/f
(10.2 s)
512/f
(20.5 s)
1024/f
(41.0 s)
CLK
XX
XX
XX
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