Data Sheet

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3.1.3. RF Electrical Characteristics
Table 3-3. RF Electrical Characteristics
Parameter
Test condition
Range
Unit
Frequency range
2400~2483.5
MHz
Channels
16
Signal No.
0B~1A
Hex
Channel spacing
5
MHz
Transmitting power
-9 to +19
dBm
Receiving sensitivity
Packet loss≤1%
-100
dBm
Max transmitting rate
250
kbps
Rated Input / Output Impedance
For unbalanced output
50
Ω
3.1.4. Processor Characteristics
Table 3-4. Processor Characteristics
Parameter
Test Conditions
Range
Unit
On-chip flash storage
256K/512K
bytes
On-chip RAM storage
32K/64K
bytes
Working frequency
38.4
MHz
3.1.5. Module Interface Characteristics
Table 3-5. Module Interface Characteristics
Parameter
Test Conditions
Range
Unit
UART Max baud rate
230400
bps
The resolution / conversion time of the analog
channel
Half-duplex mode
12/4096
Bits/µs
Analog input impedance
>1
MΩ
Analog reference voltage (VREF)
3.3
V
Analog input voltage
0 - VREF
V
I2C bus maximum clock frequency
400
KHz
GPIO output voltage (logic 0)
-8/ 4 mA
0 ~ 0.18*VCC
V
GPIO output voltage (logic 1)
-8/ 4 mA
0.82*VCC ~
V