Datasheet

MSP430F23x0
MIXED SIGNAL MICROCONTROLLER
SLAS518A -- AUGUST 2006 -- REVISED MAY 2007
36
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
USCI (UART Mode)
PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT
f
USCI
USCI input clock frequency
Internal: SMCLK, ACLK
External: UCLK
Duty Cycle = 50% ± 10%
f
SYSTEM
MHz
f
BITCLK
BITCLK clock frequency
(equals baudrate in M Baud)
2.2V /3 V 1 MHz
t
U
A
RT receive de
g
litch time
2.2 V 50 150 600 ns
t
τ
U
A
R
T
r
e
c
e
i
v
e
d
e
g
l
i
t
c
h
t
i
m
e
(see Note NO TAG)
3V 50 100 600 ns
NOTE : 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.
USCI (SPI Master Mode, see Figure 19 and Figure 20)
PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT
f
USCI
USCI input clock frequency
SMCLK, ACLK
Duty Cycle = 50% ± 10%
f
SYSTEM
MHz
t
S
O
M
I
i
n
p
u
t
d
a
t
a
s
e
t
u
p
t
i
m
e
2.2 V 110 ns
t
SU,MI
SOMI input data setup time
3V 75 ns
t
S
O
M
I
i
n
p
u
t
d
a
t
a
h
o
l
d
t
i
m
e
2.2 V ns
t
HD,MI
SOMI input data hold time
3V ns
t
S
I
M
O
o
u
t
p
u
t
d
a
t
a
v
a
l
i
d
t
i
m
e
UCLK ed
g
etoSIMOvalid;
2.2 V 30 ns
t
VALID,MO
SIMO output data valid time
U
C
L
K
e
d
g
e
t
o
S
I
M
O
v
a
l
i
d
;
C
L
=20pF
3V 20 ns
USCI (SPI Slave Mode, see Figure 21 and Figure 22)
PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT
t
STE,LEAD
STE lead time
STE low to clock
2.2 V/3 V 50 ns
t
STE,LAG
STE lag time
Last clock to STE high
2.2 V/3 V 10 ns
t
STE,ACC
STE access time
STE low to SOMI data out
2.2 V/3 V 50 ns
t
STE,DIS
STE disable time
STE high to SOMI high impedance
2.2 V/3 V 50 ns
t
S
I
M
O
i
n
p
u
t
d
a
t
a
s
e
t
u
p
t
i
m
e
2.2 V 20 ns
t
SU,SI
SIMO input data setup time
3V 15 ns
t
S
I
M
O
i
n
p
u
t
d
a
t
a
h
o
l
d
t
i
m
e
2.2 V 10 ns
t
HD,SI
SIMO input data hold time
3V 10 ns
t
S
O
M
I
o
u
t
p
u
t
d
a
t
a
v
a
l
i
d
t
i
m
e
UCLK ed
g
etoSOMIvalid;
2.2 V 75 110 ns
t
VALID,SO
SOMI output data valid time
U
C
L
K
e
d
g
e
t
o
S
O
M
I
v
a
l
i
d
;
C
L
=20pF
3V 50 75 ns