MSP430FG47x
MIXED SIGNAL MICROCONTROLLER
SLAS580D -- OCTOBER 2008 -- REVISED MARCH 2011
59
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 35)
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
100kHz
2.2 V/3 V
4.0
s
t
HD,STA
Hold time (repeated) START
f
SCL
> 100kHz
2.2 V/3 V
0.6
s
t
Set p time for a repeated START
f
SCL
100kHz
2.2 V/3 V
4.7
s
t
SU,STA
Setup time for a repeated START
f
SCL
> 100kHz
2.2 V/3 V
0.6
s
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
s
t
Pulse width of spikes suppressed by
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/fSCL
tHD,DAT
tSU,DAT
tHD,STA
tSU,STA tHD,STA
tSU,STO
tSP
Figure 35. I2C Mode Timing
Summary of Contents for MSP430FG47x
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