Datasheet

PWM Output Pins
Pin Count
2
Voltage
3.3v
Frequency (Resolution)
1.6KHz (13bit)
50.8KHz (8bit)
800KHz (4bit)
(customizable)
I2C
(master only)
Set Count
1
(SDA, SCL)
Speed
100Kbps, 400Kbps, 3.4Mbps
SPI
Set Count
1
(MOSI, MISO, SCK, SS)
Speed
104Kbps~26Mbps
UART
Set Count
1
(TX/RX)
Voltage
3.3v
UART on USB
Set Count
1
Communications
GSM
850/900/1800/1900MHz
GPRS
Class 12
Bluetooth
BR/EDR/BLE (Dual Mode)
Wi-Fi (MT5931)
802.11 b/g/n
Positioning
GPS (MT3332)
GPS/GLONASS/GALIEO/BEIDOU
User Storage
Flash
10MB
SD Card
Up to 32GB (Class 10)
Executable Size
RAM
(Code+RO+RW+ZI+Heap)
2MB