MSP430X241X Datasheet, PDF (58/98 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x241x, MSP430x261x
MIXED SIGNAL MICROCONTROLLER
SLAS541A -- JUNE 2007 -- REVISED OCTOBER 2007
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
USCI (I2C mode) (see Figure 31)
PARAMETER
f_USCI
USCI input clock frequency
f_SCL
t_HD,STA
SCL clock frequency
Hold time (repeated) Start
t_SU,STA
t_HD,DAT
t_SU,DAT
t_SU,STO
t_SP
Setup time for a repeated Start
Data hold time
Data setup time
Setup time for Stop
Pulse width of spikes suppressed by input filter
tHD,STA
TEST CONDITIONS
Internal: SMCLK, ACLK
External: UCLK
Duty cycle = 50% ± 10%
f_SCL ≤ 100 kHz
f_SCL > 100 kHz
f_SCL ≤ 100 kHz
f_SCL > 100 kHz
tSU,STA tHD,STA
VCC
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
3V
MIN TYP MAX UNIT
f_SYSTEM MHz
0
400 kHz
4.0
μs
0.6
4.7
μs
0.6
0
ns
250
ns
4.0
μs
50 150 600
ns
50 100 600
SDA
1/fSCL
tSP
SCL
tHD,DAT
tSU,DAT
tSU,STO
Figure 31. I2C Mode Timing
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