Data Sheet

1 PRODUCT OVERVIEW

1 Product overview

With the maximum CPU clock rate of 100MHz, CR3L also contains a low-power KM4

microcontroller unit (MCU), a WLAN MAC, a 1T1R WLAN module, 4-MB static random-

access memory (SRAM), 4-MB ﬂash memory, and extensive peripherals. CR3L is

an RTOS platform that integrates all function libraries of the WiFi MAC and TCP/IP

protocols. You can develop embedded WiFi products as required.

1.1 Features

• Embedded low-power KM4 MCU, which can also function as an application pro-

cessor; Clock rate: 100MHz

• Working voltage: 3.0 to 3.6 V

• Peripherals: 9 GPIOs, 1 universal asynchronous receiver/transmitter (UART),

and 1 log transmitter

• Wi-Fi/BT connectivity

– 802.11 B/G/N20

– Channels 1 to 14 at 2.4 Ghz (channels 1 to 11 for US/CA and channels 1 to

13 for EU/CN)

– Support WEP/WPA/WPA2/WPA2 PSK (AES) security modes

– Support BLE (Bluetooth Low Energy) 4.2

– Up to +20 dBm output power in 802.11b mode

– Support SmartConﬁg functions for Android and iOS devices

– Onboard PCB antenna

– Passed CE and FCC certiﬁcation

– Working temperature: -40℃ to 105℃

1.2 Applications

• Intelligent building

• Smart household and home appliances

• Smart socket and light

• Industrial wireless control

• Baby monitor

• Network camera

• Intelligent bus

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