Special Functions
6-4. PWM Pulse Width Modulation
PWM K100 D10 Y0
X0
S1·
S2·
D·
T0
t
Function
and Action
Assign occupy/empty ratio value “n”. The bound is：1~255
Assign output frequency f. The bound is：0~72KHz
Assign Y number of output pulse
Can only output at Y000 or Y001 (please treat as transistor output type).
z The output occupy/empty ratio of PMW =n /256×100%
z PWM output use the unit of 0.1Hz, so when set (S1) frequency, the set value is 10
times of the actual frequency (i.e. 10f). E.g.：to set the frequency as 72KHz, then
set value in (S1) as 720000.
z When X000 is ON, output PWM wave；when X000 is OFF, stop outputting. PMW
output doesn’t have pulse accumulation.
S2·
D·
S1·
S2·
S2·
In the upward graph：T0=1/f
T/T0=n/256
16 bits instruction：PWM 32 bits instruction：-
Suitable Model：
XC3、XC5
Suitable device
Word
X
Y
M
S
T
C
Dn.m
D·
D FDDMDX DY DS TD CDK/H
S2·
S1·
S2·
S1·
Device
Bit
13
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