MSP430F551X_1 Datasheet, PDF (64/115 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F551x
MSP430F552x
SLAS590D – OCTOBER 2009 – REVISED APRIL 2010
Timer_A
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
Internal: SMCLK, ACLK
f_TA
Timer_A input clock frequency
External: TACLK
Duty cycle = 50% ± 10%
V_CC
1.8 V/
3.0 V
MIN TYP
t_TA,cap
Timer_A capture timing
All capture inputs.
Minimum pulse width required for
capture.
1.8 V/
3.0 V
20
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MAX UNIT
25 MHz
ns
Timer_B
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
Internal: SMCLK, ACLK
f_TB
Timer_B input clock frequency
External: TBCLK
Duty cycle = 50% ± 10%
V_CC
1.8 V/
3.0 V
MIN TYP
t_TB,cap
Timer_B capture timing
All capture inputs.
Minimum pulse width required for
capture.
1.8 V/
3.0 V
20
MAX UNIT
25 MHz
ns
USCI (UART Mode) - recommended operating conditions
PARAMETER
CONDITIONS
f_USCI
USCI input clock frequency
Internal: SMCLK, ACLK
External: UCLK
Duty cycle = 50% ± 10%
f_BITCLK
BITCLK clock frequency
(equals baud rate in MBaud)
V_CC
MIN TYP MAX UNIT
f_SYSTEM MHz
1 MHz
USCI (UART Mode)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
t_t
UART receive deglitch time⁽¹⁾
TEST CONDITIONS
V_CC
2.2 V
3V
MIN TYP
50
50
MAX
600
600
UNIT
ns
(1) Pulses on the UART receive input (UCxRX) shorter than the UART receive deglitch time are suppressed. To ensure that pulses are
correctly recognized their width should exceed the maximum specification of the deglitch time.
64
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