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AS3665
Datasheet, Confidential - P r o g r a m m i n g S e q u e n c e r C o m m a n d s
Ramping of PWM(s) dependent on variables is achieved by the Ramp with variable command shown in Table 74 . This
command also can be used to wait for a defined time in the program execution (if number of increments = 0).
Table 74. Ramp with variable Command
Ramp with variable Command
Ramps the PWM of the selected PWM generator up or down;
if the number of increments is zero, it simply waits
Name
Bits
Bitname
Parameter Description
Compiler syntax: RWV, prescale, sign, variable for step, variable for number of increments;
D15:D6
10000100_
00b
0
each step has 16 clock cycles (typ. 0.49ms at 32768Hz)
D5
prescale
1
each step has 512 clock cycles (typ. 15.6ms at 32768Hz)
the clock generation is described in section Clock Generation on page 14
D4
sign
0
1
ramp up, always increment by 1; 255 is maximum value
ramp down, always decrement by 1; 0 is minimum value
The content of the variable defines the duration between single
increments/decrements; e.g. if variable rx=8, prescale=0, sign=0, the
duration between every increment is typically 0.49ms*8 = 3.92ms
Ramp with
variable
D3:D2
variable for
step
0
1
variable ra
variable rb
2
3
variable rc
variable rd
D1:D0
variable for
number of
increments
0
1
2
3
If the content of the variable rx is
0 then wait for duration defined by prescale and D3:D2
1-255 then it defines the number of actual cycles in a single ramp
command (e.g. 255 defines a full scale ramp)
variable ra
variable rb
variable rc
variable rd
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