Microchip Technology dsPIC30F - Page 708

dsPIC30F Family Reference Manual
DS70074C-page 26-10 © 2004 Microchip Technology Inc.
Table A-2 and Table A-3 show the specifications of a compliant I
2
C bus. The column titled,
Parameter No., is provided to ease the user’s correlation to the corresponding parameter in the
device data sheet. Figure A-11 and Figure A-12 show these times on the appropriate
waveforms.
Figure A-11: I
2
C Bus Start/Stop Bits Timing Specification
Table A-2: I
2
C Bus Start/Stop Bits Timing Specification
Figure A-12: I
2
C Bus Data Timing Specification
Parameter
No.
Sym Characteristic Min Typ Max Units Conditions
90 T
SU:STA Start condition 100 kHz mode 4700 — — ns Only relevant for repeated
Start condition
Setup time 400 kHz mode 600 — —
91 T
HD:STA Start condition 100 kHz mode 4000 — — ns After this period the first clock
pulse is generated
Hold time 400 kHz mode 600 — —
92 T
SU:STO Stop condition 100 kHz mode 4700 — — ns
Setup time 400 kHz mode 600 — —
93 T
HD:STO Stop condition 100 kHz mode 4000 — — ns
Hold time 400 kHz mode 600 — —
91
93
SCL
SDA
Start
Condition
Stop
Condition
90
92
90
91 92
100
101
103
106
107
109
109
110
102
SCL
SDA
In
SDA
Out
MSb