Rev. 2.0, 11/00, page 407 of 1037
19.2
Register Descriptions
19.2.1
Bit PWM Data Registers 0, 1, 2 and 3 (PWR0, PWR1, PWR2, PWR3)
(1) PWR0
0
0
1
0
W
2
0
W
3
0
4
0
W
0
W
5
6
0
7
PW04
PW03
PW02
PW01
PW00
0
W
PW07
W
W
W
PW06
PW05
Bit :
Initial value :
R/W :
(2) PWR1
0
0
1
0
W
2
0
W
3
0
4
0
W
0
W
5
6
0
7
PW14
PW13
PW12
PW11
PW10
0
W
PW17
W
W
W
PW16
PW15
Bit :
Initial value :
R/W :
(3) PWR2
0
0
1
0
W
2
0
W
3
0
4
0
W
0
W
5
6
0
7
PW24
PW23
PW22
PW21
PW20
0
W
PW27
W
W
W
PW26
PW25
Bit :
Initial value :
R/W :
(4) PWR3
0
0
1
0
W
2
0
W
3
0
4
0
W
0
W
5
6
0
7
PW34
PW33
PW32
PW31
PW30
0
W
PW37
W
W
W
PW36
PW35
Bit :
Initial value :
R/W :
8-bit PWM data registers 0, 1, 2 and 3 (PWR0, PWR1, PWR2, PWR3) control the duty cycle at
8-bit PWM pins. The data written in PWR0, PWR1, PWR2 and PWR3 correspond to the high-
level width of one PWM output waveform cycle (256 states).
When data is set in PWR0, PWR1, PWR2 and PWR3, the contents of the data are latched in the
PWM waveform generators, updating the PWM waveform generation data.
PWR0, PWR1, PWR2 and PWR3 are write-only registers. When read, all bits are always read
as 1.
PWR0, PWR1, PWR2 and PWR3 are initialized to H'00 by a reset.
Содержание Hitachi H8S/2191
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