W742S81A Datasheet, PDF (18/47 Pages) Winbond – 4 BIT MICROCONTROLLER

W742S81A
3rd octave
4th octave
5th octave
Tone
TM1 preset value Tone
TM1 preset value Tone
TM1 preset value
frequency _{& MFP frequency} frequency _{& MFP frequency} frequency _{& MFP frequency}
C
130.81
7CH 131.07 261.63
3EH 260.06 523.25
1EH 528.51
C ^# 138.59
75H 138.84 277.18
3AH 277.69 554.37
1CH 564.96
D 146.83
T _{D # 155.56}
6FH 146.28
68H 156.03
293.66
311.13
37H 292.57
34H 309.13
587.33
622.25
1BH 585.14
19H 630.15
O^E
F
164.81
174.61
62H
5DH
165.49
174.30
329.63
349.23
31H 327.68
2EH 372.36
659.26
698.46
18H 655.36
16H 712.34
N ^{F # 185.00}
G 196.00
E _G # _207.65
58H 184.09
53H 195.04
4EH 207.39
369.99
392.00
415.30
2BH 390.09
29H 420.10
26H 443.81
739.99
783.99
830.61
15H 744.72
14H 780.19
13H 819.20
A
220.00
49H 221.40 440.00
24H 442.81 880.00
12H 862.84
A ^# 233.08
45H 234.05 466.16
22H 468.11 932.23
11H 910.22
B
246.94
41H 248.24 493.88
20H 496.48 987.77
10H 963.76
Note: Central tone is A4 (440 Hz).
Table 3 The relation between the tone frequency and the present value of TM1
6.12.3 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:
3210
MR0 W
W
Note: W means write only.
Bit 0 = 0 The fundamental frequency of Timer 0 is FOSC/4.
= 1 The fundamental frequency of Timer 0 is FOSC/1024.
Bit 1 & Bit 2 are reserved
Bit 3 = 0 Timer 0 stops down-counting.
= 1 Timer 0 starts down-counting.
6.12.4 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:
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