MSP430F41x2
MIXED SIGNAL MICROCONTROLLER
SLAS648E -- APRIL 2009 -- REVISED MARCH 2011
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
USCI (I2C mode) (see Figure 23)
PARAMETER
TEST CONDITIONS
V
MIN
TYP
MAX UNIT
MHz
CC
Internal: SMCLK, ACLK
External: UCLK
f
USCI input clock frequency
f
SYSTEM
USCI
Duty cycle = 50% 10%
f
t
SCL clock frequency
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V
0
4.0
0.6
4.7
0.6
0
400 kHz
SCL
f
f
f
f
100kHz
> 100kHz
100kHz
> 100kHz
us
us
us
us
ns
ns
us
SCL
SCL
SCL
SCL
Hold time (repeated) START
HD,STA
t
Setup time for a repeated START
SU,STA
t
t
t
Data hold time
HD,DAT
SU,DAT
SU,STO
Data set--up time
Setup time for STOP
250
4.0
50
150
100
600
600
ns
ns
Pulse width of spikes suppressed by
input filter
t
SP
3 V
50
t
t
t
SU,STA HD,STA
HD,STA
SDA
SCL
1/f
t
SP
SCL
t
t
SU,STO
SU,DAT
t
HD,DAT
Figure 23. I2C Mode Timing
48
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
