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ATAR092 Datasheet(PDF) 39 Page - ATMEL Corporation

Part # ATAR092
Description  Low-current Microcontroller for Wireless Communication
PDF  100 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATAR092 Datasheet(HTML) 39 Page - ATMEL Corporation

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39
ATAR092/ATAR892
4535C–4BMCU–02/04
Timer 2 Output Mode 5
Manchester Modulator: Timer 2 Modulates the SSI internal data output (SO) to
Manchester code
Figure 41. Manchester Modulation
Timer 2 Output Mode 7
PWM Mode: Pulse-width modulation output on Timer 2 output pin (T2O)
In this mode the timer overflow defines the period and the compare register defines the
duty cycle. During one period only the first compare match occurrence is used to toggle
the timer output flip-flop, until the overflow all further compare match are ignored. This
avoids the situation that changing the compare register causes the occurrence of sev-
eral compare match during one period. The resolution at the pulse-width modulation
Timer 2 mode 1 is 12-bit and all other Timer 2 modes are 8-bit.
Figure 42. PWM Modulation
TOG2
SC
SO
T2O
00
0
00
11
01
01
11
1
1
8-bit SR Data
Bit 7
Bit 0
0
Bit 7
Bit 0
Data: 00110101
0
0
50
255
100
0
255 0
150
255 0 50
255 0
100
T2R
Input clock
Counter 2/2
Counter 2/2
OVF2
CM2
INT4
T2O
load the next
compare value
T2CO2 = 150
load
load
T1
T2
T3
T1
T2
TT
T
T
T



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