Microchip Technology AC164336 数据表
dsPIC30F1010/202X
DS70000178D-page 262
2006-2014 Microchip Technology Inc.
TABLE 21-32: I
2
C™ BUS DATA TIMING REQUIREMENTS (SLAVE MODE)
AC CHARACTERISTICS
Standard Operating Conditions: 3.3V and 5.0V (±10%)
(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
No.
Symbol
Characteristic
Min
Max
Units
Conditions
IS10
T
LO
:
SCL
Clock Low Time
100 kHz mode
4.7
—
s
Device must operate at a
minimum of 1.5 MHz
minimum of 1.5 MHz
400 kHz mode
1.3
—
s
Device must operate at a
minimum of 10 MHz
minimum of 10 MHz
1 MHz mode
(1)
0.5
—
s
IS11
T
HI
:
SCL
Clock High Time
100 kHz mode
4.0
—
s
Device must operate at a
minimum of 1.5 MHz
minimum of 1.5 MHz
400 kHz mode
0.6
—
s
Device must operate at a
minimum of 10 MHz
minimum of 10 MHz
1 MHz mode
(1)
0.5
—
s
IS20
T
F
:
SCL
SDA and SCL
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
(1)
—
100
ns
IS21
T
R
:
SCL
SDA and SCL
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
(1)
—
300
ns
IS25
T
SU
:
DAT
Data Input
Setup Time
Setup Time
100 kHz mode
250
—
ns
400 kHz mode
100
—
ns
1 MHz mode
(1)
100
—
ns
IS26
T
HD
:
DAT
Data Input
Hold Time
Hold Time
100 kHz mode
0
—
ns
400 kHz mode
0
0.9
s
1 MHz mode
(1)
0
0.3
s
IS30
T
SU
:
STA
Start Condition
Setup Time
Setup Time
100 kHz mode
4.7
—
s
Only relevant for Repeated
Start condition
Start condition
400 kHz mode
0.6
—
s
1 MHz mode
(1)
0.25
—
s
IS31
T
HD
:
STA
Start Condition
Hold Time
Hold Time
100 kHz mode
4.0
—
s
After this period, the first
clock pulse is generated
clock pulse is generated
400 kHz mode
0.6
—
s
1 MHz mode
(1)
0.25
—
s
IS33
T
SU
:
STO
Stop Condition
Setup Time
Setup Time
100 kHz mode
4.7
—
s
400 kHz mode
0.6
—
s
1 MHz mode
(1)
0.6
—
s
IS34
T
HD
:
STO
Stop Condition
100 kHz mode
4000
—
ns
Hold Time
400 kHz mode
600
—
ns
1 MHz mode
(1)
250
ns
IS40
T
AA
:
SCL
Output Valid from
Clock
Clock
100 kHz mode
0
3500
ns
400 kHz mode
0
1000
ns
1 MHz mode
(1)
0
350
ns
IS45
T
BF
:
SDA
Bus Free Time
100 kHz mode
4.7
—
s
Time the bus must be free
before a new transmission
can start
before a new transmission
can start
400 kHz mode
1.3
—
s
1 MHz mode
(1)
0.5
—
s
IS50
C
B
Bus Capacitive Loading
—
400
pF
Note 1:
Maximum pin capacitance = 10 pF for all I
2
C™ pins (for 1 MHz mode only).