BT900-Sx Hardware Integration Guide
Intelligent BTv4.0 Dual Mode Module
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current value flowing through all of the corresponding pins for a 100mS period. The maximum output
current is defined as the value of the peak current flowing through any one of the corresponding pins.
Table 3: Maximum Current Ratings
Parameter
Min
Max
Unit
Voltage at VCC pin
-0.3
+3.6
V
AVCC
VSS-0.5
VSS+4.6
V
AVREF
VSS-0.5
VSS+4.6
V
BT_VREG_IN_HV
2.3
4.8
V
BT_VREG_OUT_HV
1.7
2.0
V
BT_VDD_IO
-0.4
3.6
V
Voltage at GND pin
0
V
Voltage at SIO pin
-0.3
VCC+0.3
V
SIO “L” level average output current
4
mA
SIO “H” level average output current
-4
mA
SIO “L” level maximum output current
10
mA
SIO “H” level maximum output current
-10
mA
SIO “L” level total average output current
50
mA
SIO “H” level total average output current
-50
mA
SIO “L” level total maximum output current
100
mA
SIO “H” level total maximum output current
-100
mA
Storage temperature
-40
+85
ºC
3.3.2
Recommended Operating Parameters
Table 4: Power Supply Operating Parameters
Parameter
Min
Typ
Max
Unit
VCC (
Note 1, Note4
)
1.75
3.3
3.6
V
AVCC (AVCC=VCC) (
1.75
3.3
3.6
V
AVREF
1
(when AVCC>=2.7V
AVREF
1
(when AVCC<2.7V)
2.7V AVCC
AVCC AVCC
V
VCC Maximum ripple or noise
<10%of VCC
%
VCC rise time (0 to 1.8V) (
0.1
mS
VCC shut down time (1.8V to 0V) (
1
mS
BT_VREG_IN_HV
2.3
3.6
V
BT_VREG_OUT_HV
1.75
1.95
V
BT_VDD_IO
1.2
3.6
V
Operating Temperature Range
-40
-
+85
ºC
Note 1:
Notes on power on. Turn on/off in the following order or at same time.
Turning on: VCC > AVCC > AVRH. Turning off: AVRH > AVCC > VCC. If not using the ADC
convertor, connect AVCC=VCC.
1.8V operation is not supported in current
smart
BASIC runtime engine FW v9.1.2.0. See Note
4.
Note 2:
The maximum VCC ripple or noise (at any frequency) should not exceed 10% of VCC. Ensure
transient fluctuation rate does not exceed 0.1V/uS.
Note 3:
nRESET input time is minimum 500nS. Customer must fit an external pull-up resistor (10K) on
nRESET (pin 16) to VCC for BT900 to be out of reset. BT900 module start-up time is ~1.6