M66242P 데이터 시트보기 (PDF) - Mitsumi
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M66242P Datasheet PDF : 10 Pages
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MITSUBISHI 〈DIGITAL ASSP〉
M66242P/FP
(1) Upper byte resister
b7
b6
b5
b4
b3
b2
b1
b0
4-CH 12-BIT PWM GENERATOR
(2) Lower byte resister
b7
b6
b5
b4
b3
b2
b1
b0
PWM output “H” width setting bits
(Upper 8 bits: b11 thru b4)
Fig. 1 Upper and Lower Byte Resister Makeup
Table 1 Mode Selection
Mode
PWM data setting
(output enable)
Lower 4-bit data setting
12-bit data setting
Output disable
Write data designation bit
0: Lower byte only
1: Both lower and upper bytes
PWM output select bit
00: PWM 1
01: PWM 2
10: PWM 3
11: PWM 4
Output control select bit
0: Output disable
(Bits b7~b4 and b0 are ignored.)
1: Output enable
PWM output “H” width setting bits
(Lower 4 bits: b3 to b0)
Input serial data
Lower byte data
Upper byte data
b7 b6 b5 b4 1 b2 b1 0
––––
b7 b6 b5 b4 1 b2 b1 1 b7 b6 b5 b4 b3 b2 b1 b1
X X X X 0 b2 b1 X
––––
Table 2 Patterns of Lower 4 Bits and Subsections Whose “H” Width Is Increased
PWM register
b3-b0
Subsections tm whose H width is Number of
increased by τ (m =0 thru 15)
Subsections
0000
Nothing
0
0001
m=8
1
0010
m=4, 12
2
0100
m=2, 6, 10, 14
4
1000
m=1, 3, 5, 7, 9, 11, 13, 15
8
1111
m=1~15 (m≠0)
15
3
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