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AT90USB646 Datasheet(PDF) 431 Page - ATMEL Corporation

Part # AT90USB646
Description  Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
PDF  434 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90USB646 Datasheet(HTML) 431 Page - ATMEL Corporation

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6
7593A–AVR–02/06
AT90USB64/128
23.13 OUT Pipe management ...................................................................................297
23.14 IN Pipe management .......................................................................................298
23.15 Interrupt system ...............................................................................................299
23.16 Registers ..........................................................................................................300
24
Analog Comparator ............................................................................. 313
24.1
Analog Comparator Multiplexed Input ..............................................................315
25
Analog to Digital Converter - ADC ..................................................... 316
25.1
Features ...........................................................................................................316
25.2
Operation .........................................................................................................317
25.3
Starting a Conversion ......................................................................................318
25.4
Prescaling and Conversion Timing ..................................................................319
25.5
Changing Channel or Reference Selection ......................................................322
25.6
ADC Noise Canceler ........................................................................................323
25.7
ADC Conversion Result ...................................................................................327
25.8
ADC Register Description ................................................................................329
26
JTAG Interface and On-chip Debug System ..................................... 335
26.1
Overview ..........................................................................................................335
26.2
Test Access Port – TAP ...................................................................................335
26.3
TAP Controller .................................................................................................337
26.4
Using the Boundary-scan Chain ......................................................................338
26.5
Using the On-chip Debug System ....................................................................338
26.6
On-chip Debug Specific JTAG Instructions ......................................................339
26.7
On-chip Debug Related Register in I/O Memory .............................................340
26.8
Using the JTAG Programming Capabilities .....................................................340
26.9
Bibliography .....................................................................................................340
27
IEEE 1149.1 (JTAG) Boundary-scan ................................................... 341
27.1
Features ...........................................................................................................341
27.2
System Overview .............................................................................................341
27.3
Data Registers .................................................................................................341
27.4
Boundary-scan Specific JTAG Instructions ......................................................343
27.5
Boundary-scan Related Register in I/O Memory .............................................344
27.6
Boundary-scan Chain ......................................................................................345
27.7
AT90USB64/128 Boundary-scan Order ...........................................................348
27.8
Boundary-scan Description Language Files ....................................................351



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