User's Manual

BT900-Sx Hardware Integration Guide
Intelligent BTv4.0 Dual Mode Module
Americas: [phone] Option 2
Europe: [phone]
Hong Kong: [phone]
www.lairdtech.com/bluetooth
14 CONN-HIG-BT900
VIL Input low voltage
VCC<2.7V
VCC>=2.7V
VSS
-
0.3
0.3xVCC
0.2xVCC
V
V
VOH Output high voltage
(std. drive, 4mA) VCC<2.7V
VCC>=2.7V
VCC-0.45
VCC-0.5
VCC
VCC
V
V
VOL Output low voltage
(std. drive, 4mA) VCC<2.7V
VCC>=2.7V
VSS
VSS
0.4
0.4
V
V
Pull up resistance
VCC<2.7V
VCC>=2.7V
-
21
-
33
134
66
k
Ω
kΩ
Input capacitance
5
15
pF
Note 1: Maximum number of pins with 4 mA drive is TBD.
Table 6: SIO pin alternative function AIN (ADC) specification
Parameter
Min
Typ
Max
Unit
AVCC
1
(AVCC=VCC)
1.75
3.3
3.6
V
AVCC current draw(ADC 1 unit
operation)
1
AVCC current draw (ADC stop)
0.27
0.03
0.42
10
mA
uA
AVREF
1
(when AVCC
>=2.7V
AVREF
1
(when AVCC<2.7V)
2.7V
AVCC
AVCC
AVCC
V
AVREF current draw (ADC 1 unit
operation)
AVREF current draw (ADC stop)
0.72
0.02
1.29
2.6
mA
uA
ADC input pin (AIN) voltage maximum VSS AVREF V
ADC input port (AIN) current draw
5
uA
Time required to convert single sample
12bit mode
2 10 uS
ADC input resistor impedance (during
operation)
3
AVCC≥2.7V
1.8V≤AVCC<2.7V
ADC input capacitance impedance
(during operation)
3
2.2
5.5-10.5
kOhm
kOhm
9.4 pF
Note 1: TBD
Note 2: Currently, the smartBASIC runtime engine firmware allows 12-bit mode.
Note 3: ADC input impedance is estimated mean impedance of the ADC (AIN) pins. The ADC
is highly sensitive to the impedance of the source. The ADC (AIN) input impedance is
2.2-10.5k. Normally, when not sampling, the ADC (AIN) impedance will have very high
value and can consider it to be an open circuit. The moment ADC is sampling,
ADC(AIN) impedance is 2.2-10.5k.