Guide to Programming KT148A Chip on User - Owned Boards

The KT148A chip supports programming on user - owned boards, which is highly suitable for simple sample - sending scenarios. When performing the programming operation, a 6 - pin "DOWN - PIN" interface socket needs to be reserved. The download function is achieved through the UART serial port, and this download method is common to both the one - wire serial port version and the button version. Moreover, the programming depends on the PC - side host - computer software.

Hardware Reference Circuit and External Interface

The hardware reference circuit is centered around the 6 - pin "DOWN - PIN" interface socket.

Regarding the specific connection method of this 6 - pin socket, users can build additional circuits according to relevant definitions.

Programming Methods and Conditions

1.Download Method: Both the one - wire serial port version and the button version use the method of passing through the serial port UART and opening the PC - side host - computer software for downloading.

2.Conditions Required to Enter Downloading:

• Condition 1: Pin 5 of the chip needs to be grounded for power - on. Only in this way can the chip smoothly enter the downloading state.

• Condition 2: The chip needs to be powered, and a power supply voltage of around 3.3V - 5V is feasible.

• Condition 3: Connect a USB - to - TTL chip similar to CH340G, and at the same time, open the PC - side host - computer software. At this point, the downloading operation can be carried out.

3.Minimum Peripheral System Circuit: The minimum peripheral system circuit of the KT148A does not require isolation treatment, and it will not affect the downloading process. For example, R1 and the indicator light can be retained normally.

4.Core Programming Logic: The core logic of the entire programming process is to first short - circuit pin 5 of the chip to the ground, and then perform the power - on operation. When connecting the UART port, special attention should be paid to the cross - connection. After completing these steps, you can click the PC - side software for downloading, thus achieving the programming of KT148A one by one on the board.

Other Programming Methods

In addition to the above - mentioned programming method on user - owned boards, we also provide a download board for programming. With this download board, the downloading operation can be completed first, and then the chip can be surface - mounted. The introduction document of the download board is as follows：

Finally, summarize the entire document using AI:

Tags: #KT148A #ChipProgramming #UARTSerialPort #PC - sideHostComputerSoftware