LoRa/BLE Modules
Hardware Integration Guide
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/wireless
12
© Copyright 2016 Laird. All Rights Reserved
Americas: +1-800-492-2320
Europe: +44-1628-858-940
Hong Kong: +852 2923 0610
Table 5: Signal Levels for Interface, SIO
Parameter
Minimum
Typical
Maximum
Unit
VIH Input high voltage
0.7VCC
VCC
V
VIL Input low voltage
VSS
0.3
V
VOH Output high voltage
(std. drive, 0.5mA)
(high-drive, 5mA) (Note 1)
VCC-0.3
VCC-0.3
VCC
VCC
V
V
VOL Output low voltage
(std. drive, 0.5mA)
(high-drive, 5mA) (Note 1)
VSS
VSS
0.3
0.3
V
V
Pull up resistance
11
13
16
k
Ω
Pull down resistance
11
13
16
kΩ
Note 1:
Maximum number of pins with 5mA high drive is three.
Table 6: SIO pin alternative function AIN (ADC) specification
Parameter
Minimum
Typical
Maximum
Unit
ADC Internal reference voltage
-1.5%
1.2 V
+1.5%
%
ADC pin input
internal selectable scaling
1/1, 1/3, 2/3
Scaling
ADC input pin (AIN) voltage maximum
without damaging ADC w.r.t
VCC Prescaling
3.3 V 1/1
3.3 V 2/3
3.3 V 1/3
1.8 V 1/1
1.8 V 2/3
1.8 V 1/3
2.4
3.6
3.6
2.1
2.1
2.1
V
V
V
V
V
V
ADC input pin (AIN) voltage maximum
without saturating ADC (with 1.2V
internal reference)
1
1/1 prescaling
2/3 prescaling
1/3 prescaling
1.2
1.8
3.6
V
V
V
Time required to convert single
sample in
10bit mode
9bit mode
2
8 bit mode
2
68
36
20
uS
uS
uS
ADC input impedance (during
operation)
3
