First introduce what is MCU? MCU Microcontroller Unit (MCU), also known as Single Chip Microcomputer (Single Chip Microcomputer) or Single Chip Microcomputer, is to make the frequency and specifications of the Central Processing Unit (CPU) appropriate Reduce and integrate the peripheral interfaces such as memory, counter (Timer), USB, A/D conversion, UART, PLC, DMA, and even LCD drive circuit on a single chip to form a chip-level computer, which is different Do different combinations of control in applications. Such as mobile phones, PC peripherals, remote controls, to automotive electronics, industrial stepping motors, robotic arm control, etc., you can see the MCU.
Touch ic touch here specifically refers to single-point or multi-point touch technology; IC, that is, integrated circuit, is a general term for semiconductor component products. Including: 1. Integrated circuit board (integrated circuit, abbreviation: IC); 2. Second, triode; 3. Special electronic components, etc.; Touch IC refers to the touch chip.
Compare the differences between the two from the workload and debugging difficulty of first creating a touch application. Use the schematic diagram of the software and hardware components in the touch IC and touch MCU application scheme.
In the application scheme using the touch IC, the data exchange between the master MCU and the touch IC is usually realized through a serial interface (for example, I2C, SPI).
Therefore, users need to develop corresponding communication programs to perform data exchange. Whether it is using the hardware serial interface of the master MCU or using software to simulate the serial protocol to realize data transmission, it increases the load of software development.
Especially in the early stage of debugging, if the main control MCU cannot correctly detect the touch action, it is necessary to determine whether the source of the fault is an abnormal touch IC, or an abnormal communication program, or an error in the main control MCU side detection program. Therefore, the difficulty of software debugging is greatly increased.
2. Refined touch parametersFrom the perspective of refinement of touch parameters (for example, sensitivity), compare the differences between the two. The touch IC usually has built-in default parameters. If the detection program and communication program of the master MCU are correct, then after the MCU and the touch IC are connected, it can be judged whether there is a touch or not.
From this point of view, the touch IC has advantages. However, the default parameters are determined, and the user's application scheme is very different. Therefore, in many cases, it is necessary to fine-tune the touch parameters to optimize the touch performance of the application solution. The working environment of the optimized touch IC is shown in Figure 2.
As shown in Figure 2, Tuning software uses a serial interface to adjust the touch parameters, and writes the optimized parameters to the touch IC through the serial interface.
In order to verify the overall performance of the updated parameters in the application system, it is necessary to connect the main control MCU and the touch IC, and run the control program in the MCU.
However, the debugging tool and the master MCU share the serial interface of the touch IC. Therefore, it is necessary to cut off the connection with the debugging tool and switch the serial interface to the master MCU.
In other words, when verifying the overall performance of the parameters, the GUI of the debugging tool cannot be used to visually monitor the effects of parameter adjustments.
3. The cost of programmingFrom the cost of programming, compare the differences between the two. As shown in Figure 4, if the user does not use the default parameters of the touch IC, but uses the parameters optimized in conjunction with the specific application scheme, the latest parameters need to be solidified to the touch IC through the programmer.
Especially during mass production, the additional cost of programming the touch IC is increased. In the Rx130 solution shown on the right, only the application program needs to be burned into the Rx130.
4. LED driverFrom the perspective of LED drive, compare the similarities and differences between the two. Usually, the touch IC has a built-in LED Driver. If the application scheme needs to use an LED to indicate the presence/absence of touch action, and the structural design of the application product, the LED is required to be close to the touch electrode.
However, not all application products need to use LEDs to indicate the presence/absence of touch actions, such as simple touch pads.
VEIIK Vape is so convenient, portable, and small volume, you just need to take them out of your pocket and take a puff, feel the cloud
of smoke, and the fragrance of fruit surrounding you. It's so great.
We are the distributor of the VEIIK Vape brand, we sell veiik e cigarette, veiik vape pen, veiik disposable vaporizer, and so on.
We are also China's leading manufacturer and supplier of Disposable Vapes puff bars, disposable vape kit, e-cigarette, vape pens, and e-cigarette kit,
and we specialize in disposable vapes, e-cigarette vape pens, e-cigarette kits, etc.
veiik vape disposable,veiik vape pen,veiik e cigarette,veiik vape kit,veiik disposable vaporizer
Ningbo Autrends International Trade Co.,Ltd. , https://www.ecigarettevapepods.com