AT89C5131A View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89C5131A

USB Microcontrollers

Atmel Corporation 

AT89C5131A USB Bootloader

Figure 6. 48 MHz Frequency Auto-Configuration

MAIN

No

Resume

Detected?

Yes

No

USB Connected?

Suspend/Resume

Yes

Configure PLL for

Frequency X

Configure Timer 0

Yes

SOF Detected?

No

Timer 0 Overflow?

No

Yes

Change Frequency

USB Scheduler

11

4287E–USB–04/08

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