2010 Microchip Technology Inc.
DS70138G-page 201
dsPIC30F3014/4013
FIGURE 23-18:
I2C BUS START/STOP BITS TIMING CHARACTERISTICS (MASTER MODE)
FIGURE 23-19:
I2C BUS DATA TIMING CHARACTERISTICS (MASTER MODE)
TABLE 23-34: I2C BUS DATA TIMING REQUIREMENTS (MASTER MODE)
AC CHARACTERISTICS
Standard Operating Conditions: 2.5V to 5.5V
(unless otherwise stated)
Operating temperature
-40°C
TA +85°C for Industrial
-40°C
TA +125°C for Extended
Param
No.
Symbol
Characteristic
Min(1)
Max
Units
Conditions
IM10
TLO: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
SDA and SCL
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)
—
100
ns
Note 1:
BRG is the value of the I2C Baud Rate Generator. Refer to Section 21. “Inter-Integrated Circuit (I2C)”
in the “dsPIC30F Family Reference Manual” (DS70046).
2:
Maximum pin capacitance = 10 pF for all I2C pins (for 1 MHz mode only).
IM31
IM34
SCL
SDA
Start
Condition
Stop
Condition
IM30
IM33
IM11
IM10
IM33
IM11
IM10
IM20
IM26
IM25
IM40
IM45
IM21
SCL
SDA
In
SDA
Out