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Holtek has launched a new Flash MCU BA45F5660 for smoke detectors that integrates smoke detection AFE, LED constant current drive, temperature sensor and low-power Sub-1GHz RF transceiver. It is suitable for applications that require RF networking smoke detection products, such as collaborative alarm smoke detectors, RF communication smoke detection alarms.
BA45F5660 has 16K×16 Flash ROM, 2048×8 RAM, 256×8 EEPROM, multi-channel 12-bit ADC, 16-bit Voice DAC, multi-function Timer Module, 2 sets of UART and 1 set of SPI/I2C communication interface. The built-in smoke detection AFE integrates the filtering and amplifying circuit required by Photodiode, without any external components except Photodiode. The LED constant current drive circuit can provide two sets of maximum output currents of 360mA and 205mA, and the current can be adjusted in multiple stages. The built-in temperature sensor can adjust the sensitivity of the product according to the ambient temperature.
In the RF part, it is suitable for license-free ISM Band applications below Sub-1GHz (315/433/470/868/915MHz). The IC integrates high-power PA, GFSK frequency synthesizer and digital demodulation functions, streamlines peripheral circuits, and meets RF characteristics According to ETSI/FCC specification, the transmit power can be set by program, up to +13dBm, high receiving sensitivity -117dBm@2Kbps, ultra-low receiving power consumption 4.2mA@433MHz, and maximum transmission rate up to 250Kbps.
BA45F5660 is available in 48LQFP-EP package. Compared with the previously launched BA45F5640, BA45F5650 has the same core smoke detection and RF circuit, but also has a larger Flash ROM and RAM memory space, which can meet the requirements of more versatile RF networking smoke detection. Detect product demand.