h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 185
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h8s-2111b
Manufacturer Part Number
h8s-2111b
Description
Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2111B.pdf
(582 pages)
- Current page: 185 of 582
- Download datasheet (4Mb)
8.3.2
PWDR are 8-bit readable/writable registers. The PWM has eight PWM data registers. Each
PWDR specifies the duty cycle of the basic pulse to be output, and the number of additional
pulses. The value set in PWDR corresponds to a 0 or 1 ratio in the conversion period. The upper
four bits specify the duty cycle of the basic pulse as 0/16 to 15/16 with a resolution of 1/16. The
lower four bits specify how many extra pulses are to be added within the conversion period
comprising 16 basic pulses. Thus, a specification of 0/256 to 255/256 is possible for 0/1 ratios
within the conversion period. For 256/256 (100%) output, port output should be used.
8.3.3
PWDPRA selects the PWM output phase.
Bit
7
6
5
4
3
2
1
0
PWM Data Registers 7 to 0 (PWDR7 to PWD0)
PWM Data Polarity Register A (PWDPRA)
Bit
Name
OS7
OS6
OS5
OS4
OS3
OS2
OS1
OS0
Initial
Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Output Select 7 to 0
These bits select the PWM output phase. Bits OS7 to
OS0 correspond to outputs PW7 to PW0.
0: PWM direct output (PWDR value corresponds to high
1: PWM inverted output (PWDR value corresponds to
width of output)
low width of output)
Rev. 1.00, 05/04, page 151 of 544
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