Data Sheet

Hangzhou Grom Technology Co.,Ltd.
Add: Room800,Building3#,Longtan Rd 16#,Cangqian street, Hangzhou City, China. 311121
Website：www.gromiot.com 6
TX Output/ RX Input Nominal
Impedance
50 Ω
2.1.4. Microcontroller Characteristics
Table 2-4. Microcontroller Characteristics
Parameters Test Conditions Range Unit
On-chip Flash Memory size 512K~1024K bytes
On-chip RAM size 64K~96K bytes
Operation Frequency 80 MHz
2.1.5. Module Interfaces characteristics
Table 2-5. Module Interfaces characteristics
Parameters Test Conditions Range Unit
UART Maximum Baud Rate 230400 bps
Analog input impedance >1 MΩ
Analog input current 0 - VREF V
I2C Maximum Clock 1 MHz
Real Time Oscillator Frequency 32.768 KHz
2.2. Physical/Environmental Characteristics
Table 2-6. Physical/Environmental Characteristics
Parameter Value Remark
Size (L*W*H) 19.3x13.6x3.0mm
Working temp. -40°C to +85°C
Operating Relative Humidity Range <= 95%RH
2.3. Pin Configuration