Datasheet

 2011-2013 Microchip Technology Inc. DS39995D-page 285
PIC24FV32KA304 FAMILY
FIGURE 29-13: I
2
C™ BUS DATA TIMING CHARACTERISTICS (MASTER MODE)
TABLE 29-32: I
2
C™ BUS DATA 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 for Industrial
-40°C  T
A  +125°C for Extended
Param
No.
Symbol Characteristic Min
(1)
Max Units Conditions
IM10 T
LO:SCL Clock Low Time 100 kHz mode TCY/2 (BRG + 1) — s
400 kHz mode TCY/2 (BRG + 1) — s
1 MHz mode
(2)
TCY/2 (BRG + 1) — s
IM11 THI:SCL Clock High Time 100 kHz mode TCY/2 (BRG + 1) — s
400 kHz mode TCY/2 (BRG + 1) — s
1 MHz mode
(2)
TCY/2 (BRG + 1) — s
IM20 TF:SCL SDAx and SCLx
Fall Time
100 kHz mode — 300 ns CB is specified to be
from 10 to 400 pF
400 kHz mode 20 + 0.1 CB 300 ns
1 MHz mode
(2)
—100ns
IM21 TR:SCL SDAx and SCLx
Rise Time
100 kHz mode — 1000 ns CB is specified to be
from 10 to 400 pF
400 kHz mode 20 + 0.1 CB 300 ns
1 MHz mode
(2)
—300ns
IM25 T
SU:DAT Data Input
Setup Time
100 kHz mode 250 — ns
400 kHz mode 100 — ns
1 MHz mode
(2)
100 — ns
IM26 T
HD:DAT Data Input
Hold Time
100 kHz mode 0 — ns
400 kHz mode 0 0.9 s
1 MHz mode
(2)
0—ns
IM40 T
AA:SCL Output Valid
from Clock
100 kHz mode — 3500 ns
400 kHz mode — 1000 ns
1 MHz mode
(2)
——ns
IM45 T
BF:SDA Bus Free Time 100 kHz mode 4.7 — s Time the bus must be
free before a new
transmission can start
400 kHz mode 1.3 — s
1 MHz mode
(2)
0.5 — s
IM50 CB Bus Capacitive Loading — 400 pF
Note 1: BRG is the value of the I
2
C Baud Rate Generator. Refer to Section 17.3 “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
In
SDAx
Out
Note: Refer to Figure 29-3 for load conditions.
IM11
IM10
IM40
IM26
IM25
IM20
IM21
IM45