RFM31
Table 5. Digital IO Specifications (SDO, SDI, SCLK, nSEL, and nIRQ)
Parameter
Rise Time
Fall Time
Input Capacitance
Logic High Level Input Voltage
Logic Low Level Input Voltage
Input Current
Logic High Level Output Voltage
Logic Low Level Output Voltage
Symb
ol
T
RISE
T
FALL
C
IN
V
IH
V
IL
I
IN
V
OH
V
OL
0<V
IN
< V
DD
I
OH
<1 mA source, V
DD
=1.8 V
I
OL
<1 mA sink, V
DD
=1.8 V
–100
V
DD
– 0.6
—
0.1 x V
DD
to 0.9 x V
DD
, C
L
= 5 pF
0.9 x V
DD
to 0.1 x V
DD
, C
L
= 5 pF
Conditions
—
—
—
Min
Typ
—
—
—
—
—
—
—
—
Max
8
8
1
—
0.6
100
—
0.6
Units
ns
ns
pF
V
V
nA
V
V
V
DD
– 0.6
Note: All specification guaranteed by production test unless otherwise noted.
Table 6. GPIO Specifications (GPIO_0, GPIO_1, and GPIO_2)
Parameter
Rise Time
Fall Time
Input Capacitance
Logic High Level Input Voltage
Logic Low Level Input Voltage
Input Current
Input Current If Pullup is Activated
Symbol
T
RISE
T
FALL
C
IN
V
IH
V
IL
I
IN
I
INP
I
OmaxLL
I
OmaxLH
I
OmaxHL
I
OmaxHH
Conditions
0.1 x V
DD
to 0.9 x V
DD
,
C
L
= 10 pF, DRV<1:0>=HH
0.9 x V
DD
to 0.1 x V
DD
,
C
L
= 10 pF, DRV<1:0>=HH
Min
—
—
—
V
DD
– 0.6
—
Typ
—
—
—
—
—
—
—
0.5
2.3
3.1
3.6
—
—
Max
8
8
1
0.6
100
25
0.8
3.5
4.8
5.4
—
0.6
Units
ns
ns
pF
V
V
nA
μA
mA
mA
mA
mA
V
V
0<VIN< V
DD
V
IL
=0 V
DRV<1:0>=LL
DRV<1:0>=LH
DRV<1:0>=HL
DRV<1:0>=HH
I
OH
< I
Omax
source,
V
DD
=1.8 V
I
OL
< I
Omax
sink, V
DD
=1.8 V
–100
5
0.1
0.9
1.5
1.8
V
DD
– 0.6
—
Maximum Output Current
Logic High Level Output Voltage
Logic Low Level Output Voltage
V
OH
V
OL
Note: All specification guaranteed by production test unless otherwise noted.
8
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HOPERF [ Hope Microelectronics co., Ltd ]
