SAM4L Datasheet, PDF (1179/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

42023C–SAM–02/2013
ATSAM4L4/L2
569
24.1
24.2
24.3
24.4
24.5
24.6
24.7
24.8
Features ........................................................................................................569
Overview ........................................................................................................569
Block Diagram ...............................................................................................570
I/O Lines Description ....................................................................................571
Product Dependencies ..................................................................................571
Functional Description ...................................................................................573
User Interface ................................................................................................616
Module Configuration ....................................................................................646
25 Picopower UART (PICOUART) ............................................................ 647
25.1 Features ........................................................................................................647
25.2 Overview ........................................................................................................647
25.3 Block Diagram ...............................................................................................647
25.4 I/O Lines Description .....................................................................................648
25.5 Product Dependencies ..................................................................................648
25.6 Functional Description ...................................................................................648
25.7 User Interface ................................................................................................651
25.8 Module Configuration ....................................................................................657
26 Serial Peripheral Interface (SPI) ......................................................... 658
26.1 Features ........................................................................................................658
26.2 Overview ........................................................................................................658
26.3 Block Diagram ...............................................................................................659
26.4 Application Block Diagram .............................................................................659
26.5 I/O Lines Description .....................................................................................660
26.6 Product Dependencies ..................................................................................660
26.7 Functional Description ...................................................................................660
26.8 User Interface ................................................................................................671
26.9 Module Configuration ....................................................................................698
27 Two-wire Master Interface (TWIM) ...................................................... 699
27.1 Features ........................................................................................................699
27.2 Overview ........................................................................................................699
27.3 List of Abbreviations ......................................................................................700
27.4 Block Diagram ...............................................................................................700
27.5 Application Block Diagram .............................................................................701
27.6 I/O Lines Description .....................................................................................701
1179