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AT90PWM2 Datasheet(PDF) 181 Page - ATMEL Corporation

Part # AT90PWM2
Description  8-bit Microcontroller with 8K Bytes In-System Programmable Flash
PDF  365 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90PWM2 Datasheet(HTML) 181 Page - ATMEL Corporation

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AT90PWM2/3
4317A-3–AVR–02/05
• Bit 3 – PEVnA : PSC n External Event A Interrupt
This bit is set by hardware when an external event which can generates a capture or a
retrigger from Retrigger/Fault block A occurs.
Must be cleared by software by writing a one to its location.
This bit can be read even if the corresponding interrupt is not enabled (PEVEnA bit = 0).
• Bit 2:1 – PRNn1:0 : PSC n Ramp Number
Memorization of the ramp number when the last PEVnA or PEVnB occured.
• Bit 0 – PEOPn: End Of PSC n Interrupt
This bit is set by hardware when PSC n achieves its whole cycle.
Must be cleared by software by writing a one to its location.
Table 69. PSC n Ramp Number Description
PnRN1
PnRN0
Description
0
0
The last event which has generated an interrupt occured during ramp 1
0
1
The last event which has generated an interrupt occured during ramp 2
1
0
The last event which has generated an interrupt occured during ramp 3
1
1
The last event which has generated an interrupt occured during ramp 4



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