MSP430G2955 Datasheet, PDF (34/72 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430G2955
MSP430G2855
MSP430G2755
SLAS800 – MARCH 2013
www.ti.com
USCI (UART Mode)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
f_USCI
f_max,BITCLK
t_τ
PARAMETER
USCI input clock frequency
Maximum BITCLK clock frequency
(equals baudrate in MBaud)⁽¹⁾
UART receive deglitch time⁽²⁾
TEST CONDITIONS
SMCLK, duty cycle = 50% ± 10%
V_CC
MIN
TYP MAX UNIT
f_SYSTEM
MHz
3V
2
MHz
3V
50
100
600 ns
(1) The DCO wake-up time must be considered in LPM3 and LPM4 for baud rates above 1 MHz.
(2) Pulses on the UART receive input (UCxRX) shorter than the UART receive deglitch time are suppressed. To ensure that pulses are
correctly recognized, their duration should exceed the maximum specification of the deglitch time.
USCI (SPI Master Mode)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 22 and
Figure 23)
f_USCI
t_SU,MI
t_HD,MI
t_VALID,MO
PARAMETER
USCI input clock frequency
SOMI input data setup time
SOMI input data hold time
SIMO output data valid time
TEST CONDITIONS
SMCLK, duty cycle = 50% ± 10%
UCLK edge to SIMO valid, C_L = 20 pF
V_CC
MIN TYP
MAX UNIT
f_SYSTEM MHz
3V
75
ns
3V
0
ns
3V
20 ns
CKPL = 0
UCLK
CKPL = 1
1/f_UCxCLK
SOMI
t_LO/HI
t_LO/HI
t_SU,MI
t_HD,MI
SIMO
t_HD,MO
t_VALID,MO
Figure 22. SPI Master Mode, CKPH = 0
CKPL = 0
UCLK
CKPL = 1
SOMI
1/f_UCxCLK
t_LO/HI
t_LO/HI
t_SU,MI
t_HD,MI
SIMO
t_HD,MO
t_VALID,MO
Figure 23. SPI Master Mode, CKPH = 1
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