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AM1808
SPRS653E – FEBRUARY 2010 – REVISED MARCH 2014
6.18.3 I2C Electrical Data/Timing
6.18.3.1 Inter-Integrated Circuit (I2C) Timing
Table 6-85
and
Table 6-86
Figure
6-42).
NO.
1
t
Cycle time, I2Cx_SCL
c(SCL)
2
t
Setup time, I2Cx_SCL high before I2Cx_SDA low
su(SCLH-SDAL)
3
t
Hold time, I2Cx_SCL low after I2Cx_SDA low
h(SCLL-SDAL)
4
t
Pulse duration, I2Cx_SCL low
w(SCLL)
5
t
Pulse duration, I2Cx_SCL high
w(SCLH)
6
t
Setup time, I2Cx_SDA before I2Cx_SCL high
su(SDA-SCLH)
7
t
Hold time, I2Cx_SDA after I2Cx_SCL low
h(SDA-SCLL)
8
t
Pulse duration, I2Cx_SDA high
w(SDAH)
9
t
Rise time, I2Cx_SDA
r(SDA)
10
t
Rise time, I2Cx_SCL
r(SCL)
11
t
Fall time, I2Cx_SDA
f(SDA)
12
t
Fall time, I2Cx_SCL
f(SCL)
13
t
Setup time, I2Cx_SCL high before I2Cx_SDA high
su(SCLH-SDAH)
14
t
Pulse duration, spike (must be suppressed)
w(SP)
15
C
Capacitive load for each bus line
b
NO.
16
t
Cycle time, I2Cx_SCL
c(SCL)
17
t
Setup time, I2Cx_SCL high before I2Cx_SDA low
su(SCLH-SDAL)
18
t
Hold time, I2Cx_SCL low after I2Cx_SDA low
h(SDAL-SCLL)
19
t
Pulse duration, I2Cx_SCL low
w(SCLL)
20
t
Pulse duration, I2Cx_SCL high
w(SCLH)
21
t
Setup time, I2Cx_SDA valid before I2Cx_SCL high
su(SDAV-SCLH)
22
t
Hold time, I2Cx_SDA valid after I2Cx_SCL low
h(SCLL-SDAV)
23
t
Pulse duration, I2Cx_SDA high
w(SDAH)
28
t
Setup time, I2Cx_SCL high before I2Cx_SDA high
su(SCLH-SDAH)
(1) I2C must be configured correctly to meet the timings in
174
Peripheral Information and Electrical Specifications
assume testing over recommended operating conditions (see
Table 6-85. Timing Requirements for I2C Input
Table 6-86. Switching Characteristics for I2C
PARAMETER
Table
6-86.
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1.3V, 1.2V, 1.1V, 1.0V
Standard Mode
MIN
MAX
10
4.7
4
4.7
4
250
0
4.7
1000
20 + 0.1C
1000
20 + 0.1C
300
20 + 0.1C
300
20 + 0.1C
4
N/A
400
(1)
1.3V, 1.2V, 1.1V, 1.0V
Standard Mode
MIN
MAX
10
4.7
4
4.7
4
250
0
4.7
4
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AM1808
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Figure 6-41
and
Fast Mode
UNIT
MIN
MAX
2.5
μs
0.6
μs
0.6
μs
1.3
μs
0.6
μs
100
ns
0
0.9
μs
1.3
μs
300
ns
b
300
ns
b
300
ns
b
300
ns
b
0.6
μs
0
50
ns
400
pF
Fast Mode
UNIT
MIN
MAX
2.5
μs
0.6
μs
0.6
μs
1.3
μs
0.6
μs
100
ns
0
0.9
μs
1.3
μs
μs
0.6
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