137 of 172
ZBasic Language Reference 130 ZX Microcontroller Family Simple ZX-24 Series Interconnection By default, the serial connection to the ZX-24 series devices is 19.2K baud. You can operate the serial channel at higher and lower speeds by explicitly opening the COM1 serial channel. See the description of OpenCom() in the ZBasic System Library Reference manual. The simple configuration shown above is limited by the capacity of the on-board regulator. Although it will work for simple systems, many users will benefit from powering the ZX-24 series device from an externally regulated source. A suggested connection for such a configuration is shown below. The output of the external regulator can also be used to power additional external circuitry up to the capacity of the regulator. Depending on the power dissipated by the regulator, it may need to be mounted on a heat sink to prevent it from getting too hot. ZX-24 Series Device Interconnection Using an External Regulator