PIC18F66K22-I Datasheet, PDF (521/550 Pages) Microchip Technology – PIC18F87K22 Family Data Sheet

PIC18F87K22 FAMILY
TABLE 31-24: MSSP I²C™ BUS DATA REQUIREMENTS
Param.
No.
Symbol
Characteristic
Min
Max Units
Conditions
100 THIGH Clock High
100 kHz mode 2(TOSC)(BRG + 1) —
—
Time
400 kHz mode 2(TOSC)(BRG + 1) —
—
1 MHz mode⁽¹⁾ 2(TOSC)(BRG + 1) —
—
101 TLOW Clock Low Time 100 kHz mode 2(TOSC)(BRG + 1) —
—
400 kHz mode 2(TOSC)(BRG + 1) —
—
1 MHz mode⁽¹⁾ 2(TOSC)(BRG + 1) —
—
102 TR
SDAx and
SCLx Rise
Time
100 kHz mode
400 kHz mode
1 MHz mode⁽¹⁾
—
20 + 0.1 CB
—
1000
300
300
ns CB is specified to be from
ns ^{10 to 400 pF}
ns
103 TF
SDAx and
100 kHz mode
SCLx Fall Time _{400 kHz mode}
—
20 + 0.1 CB
300 ns CB is specified to be from
300 ns ^{10 to 400 pF}
1 MHz mode⁽¹⁾
—
100 ns
90
TSU:STA Start Condition 100 kHz mode 2(TOSC)(BRG + 1) —
— Only relevant for Repeated
Setup Time
400 kHz mode 2(TOSC)(BRG + 1) —
— ^{Start condition}
1 MHz mode⁽¹⁾ 2(TOSC)(BRG + 1) —
—
91
THD:STA Start Condition 100 kHz mode 2(TOSC)(BRG + 1) —
— After this period, the first
Hold Time
400 kHz mode 2(TOSC)(BRG + 1) —
— ^{clock pulse is generated}
1 MHz mode⁽¹⁾ 2(TOSC)(BRG + 1) —
—
106 THD:DAT Data Input
100 kHz mode
0
Hold Time
400 kHz mode
0
—
ns
0.9 s
1 MHz mode⁽¹⁾
—
—
ns
107 TSU:DAT Data Input
100 kHz mode
250
Setup Time
400 kHz mode
100
—
ns (Note 2)
—
ns
1 MHz mode⁽¹⁾
—
—
ns
92
TSU:STO Stop Condition 100 kHz mode 2(TOSC)(BRG + 1) —
—
Setup Time
400 kHz mode 2(TOSC)(BRG + 1) —
—
1 MHz mode⁽¹⁾ 2(TOSC)(BRG + 1) —
—
109 TAA
Output Valid 100 kHz mode
—
3500 ns
from Clock
400 kHz mode
—
1000 ns
1 MHz mode⁽¹⁾
—
—
ns
110 TBUF Bus Free Time 100 kHz mode
4.7
400 kHz mode
1.3
1 MHz mode⁽¹⁾
—
—
s Time the bus must be free
—
s ^{before a new transmission}
—
s ^{can start}
D102 CB
Bus Capacitive Loading
—
400 pF
Note 1: Maximum pin capacitance = 10 pF for all I²C™ pins.
2: A Fast mode I²C bus device can be used in a Standard mode I²C bus system, but Parameter #107  250 ns
must then be met. This will automatically be the case if the device does not stretch the LOW period of the
SCLx signal. If such a device does stretch the LOW period of the SCLx signal, it must output the next data bit
to the SDAx line, Parameter #102 + Parameter #107 = 1000 + 250 = 1250 ns (for 100 kHz mode), before the
SCLx line is released.
 2011 Microchip Technology Inc.
DS39960D-page 521