ATEVK1105 Atmel, ATEVK1105 Datasheet - Page 229

• Manufacturer Part Number: ATEVK1105
• Description: KIT EVAL FOR AT32UC3A0
• Manufacturer: Atmel
• Series: AVR®32r
• Type: MCUr

Specifications of ATEVK1105

• Contents: Evaluation Board, Software and Documentation
• Processor To Be Evaluated: AT32UC3A0512
• Processor Series: AVR
• Data Bus Width: 32 bit
• Interface Type: USART, TWI, USB, SPI, Ethernet
• Operating Supply Voltage: 3.3 V
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Core Sub-architecture: AVR UC3
• Silicon Core Number: AT32UC3A0512
• Silicon Family Name: AVR
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT32UC3A0
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

24.11.3
32058J-AVR32-04/11
Read-write Flowcharts
The following flowcharts shown in
read and write operations. A polling or interrupt method can be used to check the status bits.
The interrupt method requires that the interrupt enable register (IER) be configured first.
Figure 24-13. TWI Write Operation with Single Data Byte without Internal Address.
(CLDIV, CHDIV, CKDIV) in TWI_CWGR
- Device slave address (DADR)
Set the Master Mode register:
TWI_CR = MSEN + SVDIS
Write ==> bit MREAD = 0
TWI_THR = Data to send
Figure 24-13
Set the Control register:
Load Transmit register
- Transfer direction bit
Read Status register
Read Status register
(Needed only once)
Transfer finished
- Master enable
TXCOMP = 1?
Set TWI clock
TXRDY = 1?
Yes
Yes
BEGIN
to
Figure 24-18 on page 234
No
No
AT32UC3A
give examples for
229