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參數(shù)資料
型號(hào)： W742C814
廠商： WINBOND ELECTRONICS CORP
元件分類： 4位微控制器
英文描述： 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述： 4位單片機(jī)的小型通用紅外遙控器
文件頁(yè)數(shù)： 18/46頁(yè)
文件大小： 704K
代理商： W742C814
W742C814
- 18 -
Table 3. The relation between the tone frequency and the present value of TM1
C
C
#
D
D
#
B
G
G
A
F
F
E
A
#
#
#
E
N
O
T
TM1 preset value
& MFP frequency
3rd octave
4th octave
5th octave
261.63
277.18
293.66
311.13
329.63
349.23
369.99
392.00
415.30
440.00
466.16
493.88
523.25
554.37
587.33
622.25
659.26
698.46
739.99
783.99
830.61
880.00
932.23
987.77
260.06
277.69
292.57
309.13
327.68
348.58
372.35
390.09
420.10
442.81
3EH
3AH
37H
34H
31H
2EH
2BH
29H
26H
22H
24H
20H
468.11
496.48
1EH
1CH
1BH
19H
18H
16H
15H
14H
13H
12H
11H
10H
528.51
564.96
585.14
630.15
655.36
712.34
744.72
780.19
819.20
862.84
910.22
963.76
130.81
138.59
146.83
155.56
164.81
174.61
185.00
196.00
207.65
220.00
233.08
246.94
7CH
75H
6FH
68H
62H
5DH
58H
53H
4EH
45H
49H
41H
131.07
138.84
146.28
156.03
165.49
174.30
184.09
195.04
207.39
221.40
234.05
248.24
Tone
frequency
Tone
frequency
TM1 preset value
& MFP frequency
Tone
frequency
TM1 preset value
& MFP frequency
Note: Central tone is A4 (440 Hz).
6.11.3 Mode Register 0 (MR0)
Mode Register 0 is organized as a 4-bit binary register (MR0.0 to MR0.3). MR0 can be used to control
the operation of Timer 0. The bit descriptions are as follows:
Note: W means write only.
Bit 0 = 0 The fundamental frequency of Timer 0 is F
OSC
/4.
= 1 The fundamental frequency of Timer 0 is F
OSC
/1024.
Bit 1 & Bit 2 are reserved
Bit 3 = 0 Timer 0 stops down-counting.
= 1 Timer 0 starts down-counting.
W
W
0
1
2
3
MR0
6.11.4 Mode Register 1 (MR1) & MFP Control Pin (BUZCR)
Mode Register 1 is organized as a 4-bit binary register (MR1.0 to MR1.3). MR1 can be used to control the
operation of Timer 1. The bit descriptions are as follows:
W
W
W
W
0
1
2
3
MR1
Note: W means write only.
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