User`s manual

48
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37281MAH–XXXSP,M37281MFH–XXXSP
M37281MKH–XXXSP,M37281EKSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
Fig. 8.7.2 PWM Timing
(a) Pulses showing the weight of each bit
1
3
5
7
9
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
255
4
12
20
28
36
44
52
60
68
76
84
92
100
108
116
124
132
140
148
156
164
172
180
188
196
204
212
220
228
236
244
252
8
16
48
80
112
144
176
208
240
24
40
56
72
88
104
120
136
152
168
184
200
216
232
248
32
96
160
224
64
192
Bit 7
2
6
10
14
18
22
26
30
34
38
42
46
50
54
58
62
66
70
74
78
82
86
90
94
98
102
106
110
114
118
122
126
130
134
138
142
146
150
154
158
162
166
170
174
178
182
186
190
194
198
202
206
210
214
218
222
226
230
234
238
242
246
250
254
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
128
Bit 0
PWM output
t = 4 µs T = 1024 µs
f(X
IN
) = 8 MHz
(b) Example of 8-bit PWM
t
00
16
(0)
01
16
(1)
18
16
(24)
FF
16
(255)
T = 256 t