at32uc3b0512-z2ues ATMEL Corporation, at32uc3b0512-z2ues Datasheet - Page 345

• Manufacturer Part Number: at32uc3b0512-z2ues
• Description: 32-bit Avr Microcontroller
• Manufacturer: ATMEL Corporation

•
•
Table 21-18.
•
Table 21-19.
•
Table 21-20.
32059J–12/2010
SYNC/CPHA: Synchronous Mode Select or SPI Clock Phase
CHRL: Character Length.
USCLKS: Clock Selection
MODE
0
0
1
1
If USART does not operate in SPI Mode (MODE is … 0xE and 0xF):
SYNC = 0: USART operates in Asynchronous Mode.
SYNC = 1: USART operates in Synchronous Mode.
If USART operates in SPI Mode (MODE = 0xE or 0xF):
CPHA = 0: Data is changed on the leading edge of SPCK and captured on the following edge of SPCK.
CPHA = 1: Data is captured on the leading edge of SPCK and changed on the following edge of SPCK.
CPHA determines which edge of SPCK causes data to change and which edge causes data to be captured. CPHA is used with
0
0
0
0
0
0
1
1
1
0
0
1
1
CPOL to produce the required clock/data relationship between master and slave devices.
USCLKS
CHRL
0
1
0
1
0
0
0
0
1
1
0
1
1
Note:
0
1
0
1
MODE
Others
1. The value of DIV is device dependent. Please refer to the Module Configuration section at the
Character Length
5 bits
6 bits
7 bits
8 bits
end of this chapter.
Selected Clock
CLK_USART
CLK_USART/DIV
Reserved
CLK
0
0
1
1
0
1
0
1
1
(1)
0
1
0
1
0
0
0
0
1
Mode of the USART
Normal
RS485
Hardware Handshaking
Modem
IS07816 Protocol: T = 0
IS07816 Protocol: T = 1
IrDA
SPI Master
SPI Slave
Reserved
AT32UC3B
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