Scheme introduction：

At present, many applications of wireless 315/433MHz remote control require more keys, lower cost and more stable performance. HS23P6846 as a low-cost, high-speed, high anti-interference and OTP-ROM RF transmitter chip has obvious advantages in this field.

This scheme uses HS23P6846 RF transmitting circuit. The chip package is SOP16, support triangular keyboard, up to 44 keys, can meet the vast majority of the market application key demand. Chip peripheral matching circuit is simple, only a few components, for remote control distance requirements are not particularly high occasions, can save the peripheral components to save costs.

Function description：

HS23P6846 chip adopts 3.3 V power supply, the transmitting frequency is 300-450 mhz, the maximum transmitting power can reach + 13 dbm, the standby power consumption is 1 UA, including 1K * 14-bit OTP-ROM, which can support 1527/2240 codes commonly used in the market, custom code types and features are also supported. Chip is more suitable for the number of keys required for more applications.

PCB diagram:

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