Data Sheet

1 PRODUCT OVERVIEW
1 Product overview
CB3S is built in with a 32-bit MCU whose running speed can be up to 120 MHz, a
2-MB flash memory, and a 256-KB RAM, to support the Tuya cloud connection. The
MCU instructions specially extended for signal processing can effectively implement
audio encoding and decoding.
Besides, it has rich peripherals, such as PWM and UART. There are 5 channels of
32-bit PWM output, making the chip very suitable for high-quality LED control.
1.1 Features
• Built in with the low-power 32-bit CPU, which can also function as an application
processor
• The clock rate: 120 MHz
• Working voltage: 3.0 to 3.6V
• Peripherals: 5 PWMs and 1 UART
• Wi-Fi connectivity
– 802.11 b/g/n
– Channels 1 to
14@2.4 GHz
– Support WEP, WPA/WPA2, and WPA/WPA2 PSK (AES) security modes
– Up to +16 dBm output power in 802.11b mode
– Support STA/AP/STA+AP working mode
– Support SmartConfig and AP network configuration manners for Android
and iOS devices
– Onboard PCB antenna with a gain of 1.3 dBi
– Working temperature: -40℃ to 85℃
• Bluetooth connectivity
– Support the transmit power of 6 dBm in the Bluetooth mode
– Complete Bluetooth coexistence interface
– Onboard PCB antenna with a gain of 1.3 dBi
1.2 Applications
• Intelligent building
• Smart household and home appliances
2 / 27