Datasheet

PIC24FJ256GA110 FAMILY
DS39905E-page 296  2010 Microchip Technology Inc.
FIGURE 28-17: I
2
C™ BUS START/STOP BITS TIMING CHARACTERISTICS (MASTER MODE)
TABLE 28-30: I
2
C™ BUS START/STOP BIT TIMING REQUIREMENTS (MASTER MODE)
AC CHARACTERISTICS
Standard Operating Conditions: 2.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  T
A  +85°C (Industrial)
Param
No.
Symbol Characteristic Min
(1)
Max Units Conditions
IM30 T
SU:STA Start Condition
Setup Time
100 kHz mode TCY/2 (BRG + 1) — s Only relevant for
Repeated Start
condition
400 kHz mode T
CY/2 (BRG + 1) — s
1 MHz mode
(2)
TCY/2 (BRG + 1) — s
IM31 THD:STA Start Condition
Hold Time
100 kHz mode TCY/2 (BRG + 1) — s After this period, the
first clock pulse is
generated
400 kHz mode T
CY/2 (BRG + 1) — s
1 MHz mode
(2)
TCY/2 (BRG + 1) — s
IM33 TSU:STO Stop Condition
Setup Time
100 kHz mode TCY/2 (BRG + 1) — s—
400 kHz mode T
CY/2 (BRG + 1) — s
1 MHz mode
(2)
TCY/2 (BRG + 1) — s
IM34 THD:STO Stop Condition 100 kHz mode TCY/2 (BRG + 1) — ns —
Hold Time 400 kHz mode T
CY/2 (BRG + 1) — ns
1 MHz mode
(2)
TCY/2 (BRG + 1) — ns
Note 1: BRG is the value of the I
2
C™ Baud Rate Generator. Refer to Section 16.3 “Setting Baud Rate When
Operating as a Bus Master” for details
2: Maximum pin capacitance = 10 pF for all I
2
C pins (for 1 MHz mode only).
SCLx
SDAx
Start
Condition
Stop
Condition
Note: Refer to Figure 28-4 for load conditions.
IM31
IM30
IM34
IM33