at32uc3b0512-z2ues ATMEL Corporation, at32uc3b0512-z2ues Datasheet - Page 231

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

32059J–12/2010
Figure 19-15. TWI Write Operation with Single Data Byte and Internal Address
(CLDIV, CHDIV, CKDIV) in TWI_CWGR
- Internal address size (IADRSZ)
- Device slave address (DADR)
Set the Master Mode register:
TWI_CR = MSEN + SVDIS
Write ==> bit MREAD = 0
TWI_THR = Data to send
Set the internal address
Set the Control register:
TWI_IADR = address
Load transmit register
- Transfer direction bit
Read Status register
Read Status register
(Needed only once)
Transfer finished
- Master enable
Yes
TXCOMP = 1?
Set TWI clock
TXRDY = 1?
Yes
BEGIN
No
No
AT32UC3B
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