AT32UC3C2512C Automotive Atmel Corporation, AT32UC3C2512C Automotive Datasheet - Page 700
AT32UC3C2512C Automotive
Manufacturer Part Number
AT32UC3C2512C Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
2.AT32UC3C0512C_AUTOMOTIVE.pdf
(1312 pages)
3.AT32UC3C0512C_AUTOMOTIVE.pdf
(107 pages)
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27.8
27.8.1
27.8.2
9166C–AVR-08/11
Functional Description
Transfer Format
Operation
The data put on the TWD line must be 8 bits long. Data is transferred MSB first; each byte must
be followed by an acknowledgement. The number of bytes per transfer is unlimited (see
27-4).
Each transfer begins with a START condition and terminates with a STOP condition (see
27-4).
Figure 27-3.
Figure 27-4. Transfer Format
The TWIM has two modes of operation:
The master is the device which starts and stops a transfer and generates the TWCK clock.
These modes are described in the following chapters.
• A high-to-low transition on the TWD line while TWCK is high defines the START condition.
• A low-to-high transition on the TWD line while TWCK is high defines a STOP condition.
• Master transmitter mode
• Master receiver mode
TWD
TWCK
START and STOP Conditions
Start
Address
TWCK
TWD
R/W
Start
Ack
Data
Ack
Data
Stop
AT32UC3C
Ack
Stop
Figure
Figure
700
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