Datasheet

MSP430F47x3, MSP430F47x4
MIXED SIGNAL MICROCONTROLLER
SLAS545C − MAY 2007 − REVISED MARCH 2011
46
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
USCI (I2C mode) (see Figure 25)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
f
USCI
USCI input clock frequency
Internal: SMCLK, ACLK
External: UCLK
Duty cycle = 50% ± 10%
f
SYSTEM
MHz
f
SCL
SCL clock frequency 2.2 V/3 V 0 400 kHz
t
Hold time (repeated) START
f
SCL
≤ 100 kHz 2.2 V/3 V 4.0
us
t
HD, STA
Hold time (repeated) START
f
SCL
> 100 kHz 2.2 V/3 V 0.6
us
t
Setup time for a repeated START
f
SCL
≤ 100 kHz 2.2 V/3 V 4.7
us
t
SU, STA
Setup time for a repeated START
f
SCL
> 100 kHz 2.2 V/3 V 0.6
us
t
HD, DAT
Data hold time 2.2 V/3 V 0 ns
t
SU, DAT
Data setup time 2.2 V/3 V 250 ns
t
SU, STO
Setup time for STOP 2.2 V/3 V 4.0 us
t
Pulse width of spikes suppressed by input filter
2.2 V 50 150 600
ns
t
SP
Pulse width of spikes suppressed by input filter
3 V 50 100 600
ns
SDA
SCL
1/f
SCL
t
HD,DAT
t
SU,DAT
t
HD,STA
t
SU,STA
t
HD,STA
t
SU,STO
t
SP
Figure 25. I2C Mode Timing