PIC18F2455_07 Datasheet, PDF (394/430 Pages) Microchip Technology – 28/40/44-Pin, High Performance, Enhanced Flash, USB Microcontrollers with nanoWatt Technology

PIC18F2455/2550/4455/4550
FIGURE 28-17: MASTER SSP I²C™ BUS START/STOP BITS TIMING WAVEFORMS
SCL
SDA
91
90
93
92
Start
Condition
Note: Refer to Figure 28-4 for load conditions.
Stop
Condition
TABLE 28-21: MASTER SSP I²C™ BUS START/STOP BITS REQUIREMENTS
Param.
No.
Symbol
Characteristic
Min
Max Units
Conditions
90
TSU:STA Start Condition
100 kHz mode 2(TOSC)(BRG + 1) — ns Only relevant for
Setup Time
400 kHz mode 2(TOSC)(BRG + 1) —
1 MHz mode⁽¹⁾ 2(TOSC)(BRG + 1)
—
Repeated Start
condition
91
THD:STA Start Condition
100 kHz mode 2(TOSC)(BRG + 1) — ns After this period, the
Hold Time
400 kHz mode 2(TOSC)(BRG + 1) —
1 MHz mode⁽¹⁾ 2(TOSC)(BRG + 1)
—
first clock pulse is
generated
92
TSU:STO Stop Condition
100 kHz mode 2(TOSC)(BRG + 1)
—
ns
Setup Time
400 kHz mode 2(TOSC)(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(TOSC)(BRG + 1) —
1 MHz mode⁽¹⁾ 2(TOSC)(BRG + 1)
—
Note 1: Maximum pin capacitance = 10 pF for all I²C™ pins.
FIGURE 28-18:
SCL
SDA
In
SDA
Out
MASTER SSP I²C™ BUS DATA TIMING
103
100
101
90
91
106
107
109
109
Note: Refer to Figure 28-4 for load conditions.
102
92
110
DS39632D-page 392
Preliminary
© 2007 Microchip Technology Inc.