ADV
ANCEINFORMA
TION
TMS320F28377S, TMS320F28376S, TMS320F28375S, TMS320F28374S
SPRS881A – AUGUST 2014 – REVISED JUNE 2015
5.10.2.1 I
2
C Electrical Data and Timing
Table 5-62. I
2
C Timing Requirement
MIN
MAX
UNIT
Hold time, START condition, SCL fall delay
t
h(SDA-SCL)START
0.6
µs
after SDA fall
Setup time, Repeated START, SCL rise before
t
su(SCL-SDA)START
0.6
µs
SDA fall delay
t
h(SCL-DAT)
Hold time, data after SCL fall
0
µs
t
su(DAT-SCL)
Setup time, data before SCL rise
100
ns
t
r(SDA)
Rise time, SDA
Input tolerance
20
300
ns
t
r(SCL)
Rise time, SCL
Input tolerance
20
300
ns
t
f(SDA)
Fall time, SDA
Input tolerance
11.4
300
ns
t
f(SCL)
Fall time, SCL
Input tolerance
11.4
300
ns
Setup time, STOP condition, SCL rise before
t
su(SCL-SDA)STOP
0.6
µs
SDA rise delay
Table 5-63. I
2
C Switching Characteristics
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
f
SCL
SCL clock frequency
0
400
kHz
t
w(SCLL)
Pulse duration, SCL clock low
1.3
µs
t
w(SCLH)
Pulse duration, SCL clock high
0.6
µs
Pulse duration of spikes that will be
t
w(SP)
0
50
ns
suppressed by the input filter
Bus free time between STOP and START
t
BUF
1.3
µs
conditions
t
v(SCL-DAT)
Valid time, data after SCL fall
0.9
µs
t
v(SCL-ACK)
Valid time, Acknowledge after SCL fall
0.9
µs
V
IL
Valid low-level input voltage
–0.3
0.3 * V
DDIO
V
V
IH
Valid high-level input voltage
0.7 * V
DDIO
V
DDIO
+ 0.3
V
V
OL
Low-level output voltage
Sinking 3 mA
0
0.4
V
I
I
Input current on pins
0.1 V
bus
< V
i
< 0.9 V
bus
–10
10
µA
128
Specifications
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