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HOLTEK Introduces New BA45F5660 RF Smoke Detector MCU

From: Date:2022-6-22

Holtek introduces the new smoke detector Flash MCU BA45F5660, which integrates smoke detection AFE, LED constant current driver, temperature sensor and low power Sub-1GHz RF transceiver. Ideal for applications requiring RF networked smoke detection products, such as collaborative alarm smoke detectors and 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 groups of UART and 1 group of SPI/I2C communication interface. The built-in smoke detection AFE integrates the filtering and amplification circuitry required by the photodiode and does not require any external components other than the 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 product sensitivity according to the ambient temperature.

In the radio frequency part, it is suitable for license-exempt ISM frequency band applications (315/433/470/868/915MHz) below Sub-1GHz. This IC integrates high-power PA, GFSK frequency synthesizer and digital demodulation function, which simplifies the peripheral circuit. ETSI/FCC specification, programmable transmit power, up to +13dBm, high receive sensitivity -117dBm@2Kbps, ultra-low receive power consumption 4.2mA@433MHz, maximum transmission rate up to 250Kbps.

The BA45F5660 is available in a 48LQFP-EP package. Compared with the previously launched BA45F5640, the BA45F5650 has larger Flash ROM and RAM memory space except for the same core smoke detector and RF circuit, which can meet the needs of more functional RF network smoke detectors. Check product requirements.