AT90PWM2B-16SU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT90PWM2B-16SU

8-bit Atmel Microcontroller with 8K Bytes In-System Programmable Flash

Atmel Corporation 

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.

Table 21-10. Amplifier 1 Gain Selection

AMP1G1 AMP1G0 Description

0

0

Gain 5

0

1

Gain 10

1

0

Gain 20

1

1

Gain 40

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 21-11. 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

4317K–AVR–03/2013

258

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