Microchip Technology MA330027 Data Sheet
2009-2012 Microchip Technology Inc.
DS70616G-page 551
dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
TABLE 32-49: I2Cx BUS DATA TIMING REQUIREMENTS (MASTER MODE)
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
(unless otherwise stated)
Operating temperature
-40°C
T
A
+85°C for Industrial
-40°C
T
A
+125°C for Extended
Param. Symbol
Characteristic
Min.
(
)
Max.
Units
Conditions
IM10
T
LO
:
SCL
Clock Low Time 100 kHz mode
T
CY
/2 (BRG + 2)
—
s
400 kHz mode
T
CY
/2 (BRG + 2)
—
s
1 MHz mode
(
)
T
CY
/2 (BRG + 2)
—
s
IM11
T
HI
:
SCL
Clock High Time 100 kHz mode
T
CY
/2 (BRG + 2)
—
s
400 kHz mode
T
CY
/2 (BRG + 2)
—
s
1 MHz mode
(
)
T
CY
/2 (BRG + 2)
—
s
IM20
T
F
:
SCL
SDAx and SCLx
Fall Time
Fall Time
100 kHz mode
—
300
ns
C
B
is specified to be
from 10 to 400 pF
400 kHz mode
20 + 0.1 C
B
300
ns
1 MHz mode
(
)
—
100
ns
IM21
T
R
:
SCL
SDAx and SCLx
Rise Time
Rise Time
100 kHz mode
—
1000
ns
C
B
is specified to be
from 10 to 400 pF
400 kHz mode
20 + 0.1 C
B
300 ns
1 MHz mode
(
)
—
300
ns
IM25
T
SU
:
DAT
Data Input
Setup Time
Setup Time
100 kHz mode
250
—
ns
400 kHz mode
100
—
ns
1 MHz mode
(
)
40 —
ns
IM26
T
HD
:
DAT
Data Input
Hold Time
Hold Time
100 kHz mode
0
—
s
400 kHz mode
0
0.9
s
1 MHz mode
(
)
0.2 —
s
IM30
T
SU
:
STA
Start Condition
Setup Time
Setup Time
100 kHz mode
T
CY
/2 (BRG + 2)
—
s
Only relevant for
Repeated Start
condition
Repeated Start
condition
400 kHz mode
T
CY
/2 (BRG + 2)
—
s
1 MHz mode
(
)
T
CY
/2 (BRG + 2)
—
s
IM31
T
HD
:
STA
Start Condition
Hold Time
Hold Time
100 kHz mode
T
CY
/2 (BRG + 2)
—
s
After this period, the
first clock pulse is
generated
first clock pulse is
generated
400 kHz mode
T
CY
/2 (BRG +2)
—
s
1 MHz mode
(
)
T
CY
/2 (BRG + 2)
—
s
IM33
T
SU
:
STO
Stop Condition
Setup Time
Setup Time
100 kHz mode
T
CY
/2 (BRG + 2)
—
s
400 kHz mode
T
CY
/2 (BRG + 2)
—
s
1 MHz mode
(
)
T
CY
/2 (BRG + 2)
—
s
IM34
T
HD
:
STO
Stop Condition
100 kHz mode
T
CY
/2 (BRG + 2)
—
s
Hold Time
400 kHz mode
T
CY
/2 (BRG + 2)
—
s
1 MHz mode
(
)
T
CY
/2 (BRG + 2)
—
s
IM40
T
AA
:
SCL
Output Valid
From Clock
From Clock
100 kHz mode
—
3500
ns
400 kHz mode
—
1000
ns
1 MHz mode
(
)
—
400
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
free before a new
transmission can start
400 kHz mode
1.3
—
s
1 MHz mode
(
)
0.5
—
s
IM50
C
B
Bus Capacitive Loading
—
400
pF
IM51
T
PGD
Pulse Gobbler Delay
65
390
ns
See Note
Note 1: BRG is the value of the I
2
C Baud Rate Generator. Refer to Section 19. “Inter-Integrated Circuit (I
2
C™)”
(DS70330) in the “dsPIC33E/PIC24E Family Reference Manual”. Please see the Microchip web site for
the latest family reference manual sections.
the latest family reference manual sections.
2: Maximum pin capacitance = 10 pF for all I2Cx pins (for 1 MHz mode only).
3: Typical value for this parameter is 130 ns.
4: These parameters are characterized, but not tested in manufacturing.
3: Typical value for this parameter is 130 ns.
4: These parameters are characterized, but not tested in manufacturing.