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AT90USB646 Datasheet(PDF) 50 Page - ATMEL Corporation

Part # AT90USB646
Description  8-bit Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
PDF  459 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90USB646 Datasheet(HTML) 50 Page - ATMEL Corporation

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7593H–AVR–11/08
ATmega32U6/AT90USB64/128
• Bit 1 – PLLE: PLL Enable
When the PLLE is set, the PLL is started.
• Bit 0 – PLOCK: PLL Lock Detector
When the PLOCK bit is set, the PLL is locked to the reference clock. After the PLL is enabled, it
takes about 100 ms for the PLL to lock.
To clear PLOCK, clear PLLE and PLLPx bits.



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