SX1231
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
2.4.5. Digital Specification
Conditions: Temp = 25°C, VDD = 3.3V, FXOSC = 32 MHz, unless otherwise specified.
Table 8 Digital Specification
Symbol
Description
Conditions
Min
0.8
-
Typ
Max
Unit
VDD
VDD
VDD
VDD
MHz
ns
V
Digital input level high
Digital input level low
Digital output level high
Digital output level low
SCK frequency
-
-
-
IH
V
0.2
IL
V
V
F
Imax = 1 mA
Imax = -1 mA
0.9
-
-
-
0.1
10
-
OH
OL
-
-
-
SCK
t
t
t
t
t
SCK high time
50
50
-
-
ch
SCK low time
-
-
ns
cl
SCK rise time
5
5
-
-
ns
rise
fall
SCK fall time
-
-
ns
MOSI setup time
from MOSI change to SCK rising
edge
30
-
ns
setup
t
t
t
t
MOSI hold time
NSS setup time
NSS hold time
from SCK rising edge to MOSI
change
60
30
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
hold
from NSS falling edge to SCK rising
edge
nsetup
nhold
nhigh
from SCK falling edge to NSS rising
edge, normal mode
30
NSS high time between SPI
accesses
20
T_DATA
DATA hold and setup time
250
Rev 2 - Nov 2009
Page 15
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