Datasheet

Table Of Contents
© 2009 Microchip Technology Inc. DS39637D-page 453
PIC18F2480/2580/4480/4580
FIGURE 28-18: MASTER SSP I
2
C™ BUS START/STOP BITS TIMING WAVEFORMS
TABLE 28-20: MASTER SSP I
2
C™ BUS START/STOP BITS REQUIREMENTS
FIGURE 28-19: MASTER SSP 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 condi-
tion
Setup Time 400 kHz mode 2(T
OSC)(BRG + 1)
1 MHz mode
(1)
2(TOSC)(BRG + 1)
91 THD: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 TSU: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 THD: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.
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