Product Specs

Table Of Contents
20 GPIO General purpose input/output
Page
155
V
OH,SD
Output high voltage, standard drive, 0.5 mA, VDD ≥1.7
VDD-0.4
VDD
V
V
OH,HDH
Output high voltage, high drive, 5 mA, VDD >= 2.7 V
VDD-0.4
VDD
V
V
OH,HDL
Output high voltage, high drive, 3 mA, VDD >= 1.7 V
VDD-0.4
VDD
V
V
OL,SD
Output low voltage, standard drive, 0.5 mA, VDD ≥1.7
VSS
VSS+0.4
V
V
OL,HDH
Output low voltage, high drive, 5 mA, VDD >= 2.7 V
VSS
VSS+0.4
V
V
OL,HDL
Output low voltage, high drive, 3 mA, VDD >= 1.7 V
VSS
VSS+0.4
V
I
OL,SD
Current at VSS+0.4 V, output set low, standard drive, VDD 1.7
1
2
4
mA
I
OL,HDH
Current at VSS+0.4 V, output set low, high drive, VDD >= 2.7 V
6
10
15
mA
I
OL,HDL
Current at VSS+0.4 V, output set low, high drive, VDD >= 1.7 V
3
mA
I
OH,SD
Current at VDD-0.4 V, output set high, standard drive, VDD 1.7
1
2
4
mA
I
OH,HDH
Current at VDD-0.4 V, output set high, high drive, VDD >= 2.7 V
6
9
14
mA
I
OH,HDL
Current at VDD-0.4 V, output set high, high drive, VDD >= 1.7 V
3
mA
t
RF,15pF
Rise/fall time, low drive mode, 10-90%, 15 pF load
1
9
ns
t
RF,25pF
Rise/fall time, low drive mode, 10-90%, 25 pF load
1
13
ns
t
RF,50pF
Rise/fall time, low drive mode, 10-90%, 50 pF load
1
25
ns
t
HRF,15pF
Rise/Fall time, high drive mode, 10-90%, 15 pF load
1
4
ns
t
HRF,25pF
Rise/Fall time, high drive mode, 10-90%, 25 pF load
1
5
ns
t
HRF,50pF
Rise/Fall time, high drive mode, 10-90%, 50 pF load
1
8
ns
R
PU
Pull-up resistance
11
13
16
R
PD
Pull-down resistance
11
13
16
C
PAD
Pad capacitance
3
pF
C
PAD_NFC
Pad capacitance on NFC pads
4
pF
I
NFC_LEAK
Leakage current between NFC pads when driven to different
states
2
10
µA
The current drawn from the battery when GPIO is active as an output is calculated as follows:
I
GPIO
=V
DD
C
load
f
C
load
being the load capacitance and “f” is the switching frequency.
Figure 23: GPIO drive strength vs Voltage, standard drive, VDD = 3.0 V
1
Rise and fall times based on simulations
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50
Pad voltage [V]
Pad current [mA]
Symbol
Description
Min.
Typ.
Max.
Units
V
IL
Input low voltage
VSS
0.3 x VDD
V