# Open Debugger Uart use of STC microcontroller programming interface

To illustrate, here using the model for STC 89C516RD + microcontroller

1.Uart in the Open Debugger interface and connection with the STC microcontroller as STC microcontroller requires a cold start, do not use Open Debugger VCC supply to STC, and then open the STC-ISP software, select the model and serial microcontroller, as.

![](https://1339817493-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M2HWtRMO1SOVoE1wKC5%2F-M2HWuqfjq-tAqyjGf2g%2F-M2HX7YRTI_OOjIp63Tq%2Fuart%207.png?generation=1584080165723445\&alt=media)

2.Disconnect the power microcontroller, and then point detection MCU option, and then give the power microcontroller, the microcontroller will read out information.

![](https://1339817493-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M2HWtRMO1SOVoE1wKC5%2F-M2HWuqfjq-tAqyjGf2g%2F-M2HX7YTHiaiwOkCspa-%2Fuart%208.png?generation=1584080165299351\&alt=media)

3.Then point to open the program file, select STC microcontroller firmware to be programmed, then the microcontroller power, and then point to download / Programming.

![](https://1339817493-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M2HWtRMO1SOVoE1wKC5%2F-M2HWuqfjq-tAqyjGf2g%2F-M2HX7YVP73O_lORLCY4%2Fuart%209.png?generation=1584080165467151\&alt=media)

4.Download/programmed, to give the power microcontroller, programmed to be completed.

![](https://1339817493-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M2HWtRMO1SOVoE1wKC5%2F-M2HWuqfjq-tAqyjGf2g%2F-M2HX7YXNq4dRDtOov1a%2Fuart%2010.png?generation=1584080165928836\&alt=media)

5.If the power for a long time did not respond, check the cable is connected right, or attempt to re-power. Note: Open Debugger UART interface through RXD / TXD pin on the microcontroller power supply, causing power outages can not completely downloaded. TxD pins in microcontroller series with a diode (then positive), so that the microcontroller can be powered down completely cold start.