Data Sheet

RM1xx LoRa/BLE Modules
Datasheet
https://connectivity.lairdtech.com/wireless-
modules/lorawan-solutions
13
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Note 2: The maximum VCC ripple or noise (at any frequency) that does not disturb the radio.
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 kΩ
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