TIMING CHARACTERISTICS
(Cont.)
At T
A
= –40°C to +85°C, +V
DD
= +2.7V, unless otherwise noted. All values referred to V
IHMIN
and V
ILMAX
levels.
PARAMETER
Fall Time of SCL Signal
SYMBOL
t
fCL
CONDITIONS
Standard Mode
Fast Mode
High-Speed Mode, C
b
= 100pF max
High-Speed Mode, C
b
= 400pF max
Standard Mode
Fast Mode
High-Speed Mode, C
b
= 100pF max
High-Speed Mode, C
b
= 400pF max
Standard Mode
Fast Mode
High-Speed Mode, C
b
= 100pF max
High-Speed Mode, C
b
= 400pF max
Standard Mode
Fast Mode
High-Speed Mode
Standard Mode
Fast Mode
High-Speed Mode, SCL = 1.7MHz
High-Speed Mode, SCL = 3.4MHz
Fast Mode
High-Speed Mode
Standard Mode
Fast Mode
High-Speed Mode
Standard Mode
Fast Mode
High-Speed Mode
0
0
0.2V
DD
MIN
20 + 0.1C
b
10
20
20 + 0.1C
b
10
20
20 + 0.1C
b
10
20
4.0
600
160
400
400
400
100
50
10
MAX
300
300
40
80
1000
300
80
160
300
300
80
160
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
pF
pF
pF
pF
ns
ns
V
Rise Time of SDA Signal
t
rDA
Fall Time of SDA Signal
t
fDA
Setup Time for STOP Condition
t
SU;
STO
Capacitive Load for SDA or SCL
Line
C
b
Pulse Width of Spike Suppressed
Noise Margin at the HIGH Level for
Each Connected Device (Including
Hysteresis)
Noise Margin at LOW Level for Each
Connected Device (Including
Hysteresis)
t
SP
V
nH
V
nL
0.1V
DD
V
TIMING DIAGRAM
t
rDA
t
fDA
SDA
t
BUF
t
LOW
t
rCL
t
fCL
t
HD; STA
t
SP
SCL
t
HD; STA
t
HD; DAT
t
HIGH
t
SU; DAT
t
SU; STA
t
rCL1
t
SU; STO
STOP START
REPEATED
START
TSC2003
SBAS162D
5
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TI [ TEXAS INSTRUMENTS ]
