S/AI
Page 27 of 52
5.4 Environmental Requirements
Item
Symbol Absolute Maximum Ratings
Unit
Storage temperature range
T
stg
-40 to +85
°C
Operating temperature range
T
op
-25 to +75
°C
Table 10: Environmental Requirements
5.5 DC Parameter
All Module I/O pins are connected directly to the Nordic nRF51822 chip without signal conditioning
except for some pull-up/pull-down resistors (as indicated). Therefore the electrical characteristics
are as documented in the Nordic nRF51822 data sheet [2].
5.5.1 General Purpose I/O (GPIO)
T
amb
= 25°C
Symbol Item
Condition
Limit
Unit
Min
Typ
Max
V
IL
Low-Level Input Voltage VSUP = 1,8 to 3,6V
VSS
-
VSUP*0,3
V
V
IH
High-Level Input Voltage VSUP = 1,8 to 3,6V
VSUP*0,7
-
VSUP
V
V
OL
Low-Level Output
Voltage
I
OL
= 0,5mA
(1)
I
OL
= 5,0mA
(2), (3)
VSS
VSS
-
0,3
0,3
V
V
OH
High-Level Output
Voltage
I
OH
= -0,5mA
(1)
I
OH
= -5,0mA
(2), (3)
VSUP-0,3
VSUP-0,3
-
VSUP
VSUP
V
I
OL
Low -Level Output
Current
V
OL
≤ 0,3V
-
-
-0,5mA
(1)
-5,0mA
(2), (3)
mA
I
OH
High-Level Output
Current
VSUP-0,3V
≤ V
OH
≤
VSUP
-
-
0,5mA
(1)
5,0mA
(2), (3)
mA
R
PU
pull-up resistor
11
13
16
k
Ω
R
PD
pull-down resistor
11
13
16
k
Ω
I
lc
I/O pad leakage current
-3,5
0,01
+3,5
nA
C
l
Input Capacitance
2,5
pF
(1)
drive = std
(2)
drive = hi
(3)
maximal number of pins (per package) with high drive is 3
Table 11: DC Characteristics, Digital IO
