PIC18F4321 Datasheet, PDF (362/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F4321 FAMILY
FIGURE 26-19: MASTER SSP I²C™ BUS START/STOP BITS TIMING WAVEFORMS
SCL
SDA
91
90
93
92
Start
Condition
Note: Refer to Figure 26-5 for load conditions.
Stop
Condition
TABLE 26-20: 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 26-20:
SCL
SDA
In
SDA
Out
MASTER SSP I²C™ BUS DATA TIMING
103
100
101
90
91
106
107
109
109
Note: Refer to Figure 26-5 for load conditions.
102
92
110
DS39689E-page 360
Preliminary
© 2007 Microchip Technology Inc.