Atmel SAM4L-EK Atmel ATSAM4L-EK ATSAM4L-EK Data Sheet
Product codes
ATSAM4L-EK
576
42023E–SAM–07/2013
ATSAM4L8/L4/L2
Figure 24-2. USART Block Diagram
Peripheral DMA
Controller
Channel
Channel
Interrupt
Controller
Power
Manager
DIV
Receiver
Transmitter
User
Interface
I/O
Controller
RXD
RTS
TXD
CTS
CLK
BaudRate
Generator
Generator
USART
Interrupt
CLK_USART
CLK_USART/DIV
USART
Peripheral bus
Table 24-1.
SPI Operating Mode
PIN
USART
SPI Slave
SPI Master
RXD
RXD
MOSI
MISO
TXD
TXD
MISO
MOSI
RTS
RTS
–
CS
CTS
CTS
CS
–