MSP430G2744 Datasheet, PDF (37/73 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

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MSP430G2744
MSP430G2544
MSP430G2444
SLAS892A – MARCH 2013 – REVISED APRIL 2013
USCI (I2C Mode)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 22)
f_USCI
PARAMETER
USCI input clock frequency
TEST CONDITIONS
Internal: SMCLK, ACLK
External: UCLK
Duty cycle = 50% ± 10%
V_CC
MIN TYP MAX UNIT
f_SYSTEM MHz
f_SCL
t_HD,STA
t_SU,STA
t_HD,DAT
t_SU,DAT
t_SU,STO
t_SP
SCL clock frequency
Hold time (repeated) START
Setup time for a repeated START
Data hold time
Data setup time
Setup time for STOP
Pulse duration of spikes suppressed by
input filter
f_SCL ≤ 100 kHz
f_SCL > 100 kHz
f_SCL ≤ 100 kHz
f_SCL > 100 kHz
3V
0
4
3V
0.6
4.7
3V
0.6
3V
0
3V
250
3V
4
400 kHz
µs
µs
ns
ns
µs
3V
50 100
600 ns
tHD,STA
tSU,STA tHD,STA
SDA
1/fSCL
tSP
SCL
tHD,DAT
tSU,DAT
Figure 22. I2C Mode Timing
tSU,STO
Copyright © 2013, Texas Instruments Incorporated
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