MSP430x23x, MSP430x24x(1), MSP430x2410
MIXED SIGNAL MICROCONTROLLER
SLAS547A -- JUNE 2007 -- REVISED NOVEMBER 2007
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
USCI (I
2
C mode) (see Figure 31)
PARAMETER
f
USCI
f
SCL
t
HD,STA
t
SU,STA
t
HD,DAT
t
SU,DAT
t
SU,STO
t
SP
USCI input clock frequency
SCL clock frequency
Hold time (repeated) START
Setup
Set p 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
SDA
1/fSCL
SCL
tSU,DAT
tHD,DAT
tSU,STO
tSP
tSU,STA tHD,STA
f
SCL
鈮?/div>
100kHz
f
SCL
> 100kHz
f
SCL
鈮?/div>
100kHz
f
SCL
> 100kHz
TEST CONDITIONS
Internal: SMCLK, ACLK
External: UCLK
Duty cycle = 50%
鹵
10%
2.2 V/3 V
2.2
2 2 V/3 V
2.2
2 2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V
3V
0
4.0
0.6
4.7
0.6
0
250
4.0
50
50
150
100
600
600
VCC
MIN
TYP
MAX
f
SYSTEM
400
UNIT
MHz
kHz
渭s
s
渭s
s
ns
ns
渭s
ns
Figure 31. I
2
C Mode Timing
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
59
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