MSP430F5438A Datasheet, PDF (57/106 Pages) Texas Instruments – Mixed Signal Microcontroller

MSP430F5438A, MSP430F5437A, MSP430F5436A, MSP430F5435A
MSP430F5419A, MSP430F5418A
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SLAS655D – JANUARY 2010 – REVISED AUGUST 2013
USCI (SPI Master Mode) Recommended Operating Conditions
PARAMETER
CONDITIONS
V_CC
f_USCI
USCI input clock frequency
Internal: SMCLK, ACLK
Duty cycle = 50% ± 10%
MIN TYP MAX UNIT
f_SYSTEM MHz
USCI (SPI Master Mode)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
(see Note ⁽¹⁾, Figure 12 and Figure 13)
f_USCI
PARAMETER
USCI input clock frequency
TEST CONDITIONS
SMCLK, ACLK,
Duty cycle = 50% ± 10%
V_CC
MIN TYP MAX UNIT
f_SYSTEM MHz
1.8 V
55
PMMCOREV = 0
ns
3.0 V
38
t_SU,MI
SOMI input data setup time
2.4 V
30
PMMCOREV = 3
ns
3.0 V
25
1.8 V
0
PMMCOREV = 0
ns
3.0 V
0
t_HD,MI
SOMI input data hold time
2.4 V
0
PMMCOREV = 3
ns
3.0 V
0
t_VALID,MO SIMO output data valid time⁽²⁾
UCLK edge to SIMO valid,
C_L = 20 pF, PMMCOREV = 0
UCLK edge to SIMO valid,
C_L = 20 pF, PMMCOREV = 3
1.8 V
3.0 V
2.4 V
3.0 V
20
ns
18
16
ns
15
1.8 V
-10
t_HD,MO
SIMO output data hold time⁽³⁾
C_L = 20 pF, PMMCOREV = 0
3.0 V
-8
2.4 V
-10
ns
C_L = 20 pF, PMMCOREV = 3
3.0 V
-8
ns
(1) f_UCxCLK = 1/2t_LO/HI with t_LO/HI ≥ max(t_{VALID,MO(USCI)} + t_SU,SI(Slave), t_SU,MI(USCI) + t_{VALID,SO(Slave)}).
For the slave's parameters t_SU,SI(Slave) and t_{VALID,SO(Slave)}, see the SPI parameters of the attached slave.
(2) Specifies the time to drive the next valid data to the SIMO output after the output changing UCLK clock edge. See the timing diagrams
in Figure 12 and Figure 13.
(3) Specifies how long data on the SIMO output is valid after the output changing UCLK clock edge. Negative values indicate that the data
on the SIMO output can become invalid before the output changing clock edge observed on UCLK. See the timing diagrams in
Figure 12 and Figure 13.
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