Data Sheet

Page 19
RFM95/96/97/98
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WIRELESS & SENSING PRELIMINARY DATASHEET
2.4.6. Digital Specification
Conditions: Temp = 25° C, VDD = 3.3 V, FXOSC = 32 MHz, unless otherwise specified.
Table 57 Digital Specification
Symbol
Description
Conditions
Min
Typ
Max
Unit
V
IH
Digital input level high
0.8
-
-
VDD
V
IL
Digital input level low
-
-
0.2
VDD
V
OH
Digital output level high
Imax = 1 mA
0.9
-
-
VDD
V
OL
Digital output level low
Imax = -1 mA
-
-
0.1
VDD
F
SCK
SCK frequency
-
-
10
MHz
t
ch
SCK high time
50
-
-
ns
t
cl
SCK low time
50
-
-
ns
t
rise
SCK rise time
-
5
-
ns
t
fall
SCK fall time
-
5
-
ns
t
setup
MOSI setup time
From MOSI change to SCK rising
edge.
30
-
-
ns
t
hold
MOSI hold time
From SCK rising edge to MOSI
change.
20
-
-
ns
t
nsetup
NSS setup time
From NSS falling edge to SCK rising
edge.
30
-
-
ns
t
nhold
NSS hold time
From SCK falling edge to NSS rising
edge, normal mode.
100
-
-
ns
t
nhigh
NSS high time between SPI
accesses
20
-
-
ns
T_DATA
DATA hold and setup time
250
-
-
ns