Datasheet

PIC18F66K80 FAMILY
DS39977F-page 576  2010-2012 Microchip Technology Inc.
FIGURE 31-17: MSSP I
2
C™ BUS START/STOP BITS TIMING WAVEFORMS
TABLE 31-21: MSSP I
2
C™ BUS START/STOP BITS REQUIREMENTS
FIGURE 31-18: MSSP I
2
C™ BUS DATA TIMING
Param.
No.
Symbol Characteristic Min Max Units Conditions
90 TSU:STA Start Condition 100 kHz mode 2(TOSC)(BRG + 1) — ns Only relevant for
Repeated Start
condition
Setup Time 400 kHz mode 2(T
OSC)(BRG + 1) —
1 MHz mode
(1)
2(TOSC)(BRG + 1) —
91 T
HD:STA Start Condition 100 kHz mode 2(TOSC)(BRG + 1) — ns After this period, the
first clock pulse is
generated
Hold Time 400 kHz mode 2(T
OSC)(BRG + 1) —
1 MHz mode
(1)
2(TOSC)(BRG + 1) —
92 T
SU:STO Stop Condition 100 kHz mode 2(TOSC)(BRG + 1) — ns
Setup Time 400 kHz mode 2(T
OSC)(BRG + 1) —
1 MHz mode
(1)
2(TOSC)(BRG + 1) —
93 T
HD:STO Stop Condition 100 kHz mode 2(TOSC)(BRG + 1) — ns
Hold Time 400 kHz mode 2(T
OSC)(BRG + 1) —
1 MHz mode
(1)
2(TOSC)(BRG + 1) —
Note 1: Maximum pin capacitance = 10 pF for all I
2
C™ pins.
Note: Refer to Figure 31-3 for load conditions.
91
93
SCL
SDA
Start
Condition
Stop
Condition
90
92
Note: Refer to Figure 31-3 for load conditions.
90
91 92
100
101
103
106
107
109
109
110
102
SCL
SDA
In
SDA
Out