W83627HF Datasheet, PDF (108/185 Pages) Winbond – WINBOND I/O

W83627HF/F
11.2.2.2
PRELIMINARY
The serial bus timing of the temperature 2 and 3 are shown as follow:
(a) Typical 2-byte read from preset pointer location (Temp, T_OS, T_HYST)
0
SCL
SDA
0
Start By
Master
7 8 0 _...
7 8 0 _...
7
1
0
1
1
0
1 R/W
... D7
D1 D0
... D7
D1 D0
Frame 1
Serial Bus Address Byte
Ack
Ack
by
Frame 2
by
Master
782D
MSB Data Byte
Frame 3
LSB Data Byte
Ack
by
Master
Stop by
Master
(b) Typical pointer set followed by immediate read for 2-byte register (Temp, T_OS, T_HYST)
0
SCL
780
4
SDA
1
0
0
1
A2 A1 A0 R/W
0 0 0 0 0 0 D1 D0
Start By
Master
Frame 1
Ack
by
Serial Bus Address Byte
782D
Ack
Frame 2
by
Pointer Byte
782D
0
SCL
SDA
1
Start By
Master
7 8 0 _...
7 8 0 _...
7
0 0 1 A2 A1 A0 R/W
... D7
D1 D0
... D7
D1 D0
Frame 3
Serial Bus Address Byte
Ack
Ack
by
Frame 4
by
Master
782D
MSB Data Byte
Frame 5
LSB Data Byte
No Ack
by
Master
Stop by
Master
0
(c) Typical read 1-byte from configuration register with preset pointer
0
SCL
780
7
8
SDA
1
Start By
Master
0 0 1 A2 A1 A0 R/W
D7 D6 D5 D4 D3 D2 D1 D0
Frame 1
Serial Bus Address Byte
Ack
by
Frame 2
782D
Data Byte
No Ack
by
Master
Stop by
Master
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Publication Release Date: Jul 1999
Revision 0.53