Datasheet

MSP430F6438, MSP430F6436
MSP430F6435, MSP430F6433
SLAS720C –AUGUST 2010–REVISED AUGUST 2013 www.ti.com
USCI (SPI Slave Mode)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
(1)
(see Figure 14 and Figure 15)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
1.8 V 11
PMMCOREV = 0 ns
3 V 8
t
STE,LEAD
STE lead time, STE low to clock
2.4 V 7
PMMCOREV = 3 ns
3 V 6
1.8 V 3
PMMCOREV = 0 ns
3 V 3
t
STE,LAG
STE lag time, Last clock to STE high
2.4 V 3
PMMCOREV = 3 ns
3 V 3
1.8 V 66
PMMCOREV = 0 ns
3 V 50
t
STE,ACC
STE access time, STE low to SOMI data out
2.4 V 36
PMMCOREV = 3 ns
3 V 30
1.8 V 30
PMMCOREV = 0 ns
3 V 23
STE disable time, STE high to SOMI high
t
STE,DIS
impedance
2.4 V 16
PMMCOREV = 3 ns
3 V 13
1.8 V 5
PMMCOREV = 0 ns
3 V 5
t
SU,SI
SIMO input data setup time
2.4 V 2
PMMCOREV = 3 ns
3 V 2
1.8 V 5
PMMCOREV = 0 ns
3 V 5
t
HD,SI
SIMO input data hold time
2.4 V 5
PMMCOREV = 3 ns
3 V 5
UCLK edge to SOMI valid, 1.8 V 76
C
L
= 20 pF, ns
3 V 60
PMMCOREV = 0
t
VALID,SO
SOMI output data valid time
(2)
UCLK edge to SOMI valid, 2.4 V 44
C
L
= 20 pF, ns
3 V 40
PMMCOREV = 3
1.8 V 18
C
L
= 20 pF,
ns
PMMCOREV = 0
3 V 12
t
HD,SO
SOMI output data hold time
(3)
2.4 V 10
C
L
= 20 pF,
ns
PMMCOREV = 3
3 V 8
(1) f
UCxCLK
= 1/2t
LO/HI
with t
LO/HI
≥ max(t
VALID,MO(Master)
+ t
SU,SI(USCI)
, t
SU,MI(Master)
+ t
VALID,SO(USCI)
).
For the master's parameters t
SU,MI(Master)
and t
VALID,MO(Master)
, see the SPI parameters of the attached slave.
(2) Specifies the time to drive the next valid data to the SOMI output after the output changing UCLK clock edge. See the timing diagrams
in Figure 14 and Figure 15.
(3) Specifies how long data on the SOMI output is valid after the output changing UCLK clock edge. See the timing diagrams in Figure 14
and Figure 15.
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