at94k40al ATMEL Corporation, at94k40al Datasheet - Page 96
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at94k40al
Manufacturer Part Number
at94k40al
Description
At94kal Series Field Programmable System Level Integrated Circuit
Manufacturer
ATMEL Corporation
Datasheet
1.AT94K40AL.pdf
(204 pages)
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Part Number
Manufacturer
Quantity
Price
Part Number:
at94k40al-25DQC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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96
AT94KAL Series FPSLIC
Table 4-15.
Notes:
In PWM mode, the value to be written to the Output Compare Register is first transferred to a
temporary location, and then latched into the OCR when the Timer/Counter reaches $FF. This
prevents the occurrence of odd-length PWM pulses (glitches) in the event of an unsynchronized
OCR0 or OCR2 write. See
CTCn
x
0
0
1
1
(2)
(1)
1. n = 0 or 2
2. x = don’ t care
COMn1
Compare Mode Select in PWM Mode
0
1
1
1
1
(1)
COMn0
Figure 4-29
x
0
1
0
1
(2)
(1)
Effect on Compare Pin
Not connected
Cleared on compare match, up-counting. Set
on compare match, down-counting (non-
inverted PWM)
Cleared on compare match, down-counting.
Set on compare match, up-counting (inverted
PWM)
Cleared on compare match,
set on overflow
Set on compare match, cleared on overflow
and
Figure 4-30
for examples.
f
f
f
f
Frequency
TCK0/2
TCK0/2
TCK0/2
TCK0/2
1138I–FPSLI–1/08
–
/510
/510
/256
/256
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