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AT90PWM2 Datasheet(PDF) 258 Page - ATMEL Corporation

Part # AT90PWM2
Description  High Performance, Low Power Atmel
PDF  365 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90PWM2 Datasheet(HTML) 258 Page - ATMEL Corporation

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4317K–AVR–03/2013
AT90PWM2/3/2B/3B
• Bit 6– AMP1IS: Amplifier 1 Input Shunt
Set this bit to short-circuit the Amplifier 1 input.
Clear this bit to normally use the Amplifier 1.
• Bit 5, 4– AMP1G1, 0: Amplifier 1 Gain Selection Bits
These 2 bits determine the gain of the amplifier 0.
The different setting are shown in Table 21-10.
To ensure an accurate result, after the gain value has been changed, the amplifier input needs
to have a quite stable input value during at least 4 Amplifier synchronization clock periods.
• Bit 1, 0– AMP1TS1, AMP1TS0: Amplifier 1 Trigger Source Selection Bits
In accordance with the Table 21-11, these 2 bits select the event which will generate the trigger
for the amplifier 1. This trigger source is necessary to start the conversion on the amplified
channel.
Table 21-10. Amplifier 1 Gain Selection
AMP1G1
AMP1G0
Description
00
Gain 5
01
Gain 10
10
Gain 20
11
Gain 40
Table 21-11. AMP1 Auto Trigger source selection
AMP1TS1
AMP1TS0
Description
0
0
Auto synchronization on ADC Clock/8
0
1
Trig on PSC0ASY
1
0
Trig on PSC1ASY
1
1
Trig on PSC2ASY



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