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