Data Sheet

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3.1.3. Radio Frequency Character
Table 3-3. RF Character
Parameter
Test Condition
Range
Unit
Working Frequency
2400~2483.5
MHz
Bands Number
16
Channel Number
0B~1A
Hex
Channel Spacing
5
MHz
Transmit Power
-9 to +19.5
dBm
Receiver Sensitivity（90%）
-98 to -100
dBm
Max. Transmission Rate
250
kbps
Rated Input/Output Impedance
For unbalanced output
50
Ω
3.1.4. Processor Features
Table 3-4.Processor Features
Parameter
Test Condition
Range
Unit
On-chip Flash memory
256K
bytes
On-chip RAM memory
32K
bytes
Work Frequency
38.4
MHz
3.1.5. Module Interface Features
Table 3-5. Module Interface Features
Parameter
Test Condition
Range
Unit
UART maximum baud rate
230400
bps
Analog channel resolution/conversion time
Half duplex mode
12/4096
Bits/µs
Analog input impedance
>1
MΩ
Analog reference voltage（VREF）
1.2
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 ~ VCC
V
Real-time clock frequency
32.768
KHz