English
Language : 

PIC18F2221_1 Datasheet, PDF (367/402 Pages) Microchip Technology – Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
PIC18F2221/2321/4221/4321 FAMILY
FIGURE 27-19: MASTER SSP I2C™ BUS START/STOP BITS TIMING WAVEFORMS
SCL
SDA
91
90
93
92
Start
Condition
Stop
Condition
TABLE 27-20: 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 27-20:
SCL
SDA
In
SDA
Out
MASTER SSP I2C™ BUS DATA TIMING
103
100
101
90
91
106
107
109
109
102
92
110
© 2009 Microchip Technology Inc.
DS39689F-page 367