Domestic chip list: New recommendations from netizens, the few cents of Puran PY32F002A and Qinheng ch32v003, welcome to post and discuss

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Domestic chip list: New recommendations from netizens, the few cents of Puran PY32F002A and Qinheng ch32v003, welcome to post and discuss [Copy link]

 

 

The domestic chip list has received two new recommendations for MCUs. Netizens mainly focus on the principle of cheap and easy to use . Netizens are welcome to post comments and chat.

It should have been used more frequently in Qin Heng Tan, and I have roughly heard of Pu Ran.

Recommended product model: ch32v003
Recommended reason: Cheap is enough. It is said that it only costs 50 cents a piece. It is very popular on the Internet. It has RISC-V architecture, SPI, I2C, GPIO, etc. If this chip can meet the requirements, why not choose it?
Category: MCU/MPU (RISC-V architecture)
Manufacturer: WCH

Recommended product model: PY32F002A
Recommended reason: Same as ch32v003, cheap is enough reason, cortex-m0+ architecture, i2c, spi, gpio are all available, it is also a favorite of electronic engineers
Category: MCU/MPU (arm architecture)
Manufacturer: Pu Ran

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tsingkou

ch32v003, has anyone used it in a real project? How is its stability?

尹小舟

Used Puran

尹小舟

Lingdong has a 001 and Pengpai Y003

chejia12

Overview

The CH32V003 series is an industrial-grade general-purpose microcontroller designed based on the Qingke RISC-V2A core.

This series has the characteristics of wide voltage, single-line debugging, low power consumption, and ultra-small package. It provides commonly used peripheral functions and has a built-in DMA

Controller, 1 set of 10-bit analog-to-digital conversion ADC, 1 set of op amp comparators, multiple sets of timers, standard communication interfaces such as USART, I2C, SPI, etc.

The product's rated operating voltage is 3.3V or 5V, and the operating temperature range is -40℃～85℃ industrial grade.

Product Features

l Core:

- Qingke 32-bit RISC-V core, RV32EC instruction set

- Fast programmable interrupt controller + hardware interrupt stack

- Support 2-level interrupt nesting

- Support system frequency 48MHz

Memory:

- 2KB volatile data storage area SRAM

- 16KB program storage area CodeFlash

- 1920B system boot program storage area BootLoader

- 64B system non-volatile configuration information storage area

- 64B user-defined information storage area

l Power management and low power consumption:

- System power supply VDD nominal: 3.3V or 5V

- Low power modes: sleep, standby

l System clock, reset

- Built-in factory-trimmed 24MHz RC oscillator

- Built-in 128kHz RC oscillator

- External support 4~25MHz high speed oscillator

- Power-up/power-down reset, programmable voltage monitor

l 1 group 1 channel general purpose DMA controller

- 7 channels, support ring buffer management

- Support TIMx/ADC/USART/I2C/SPI

l 1 group of op amps and comparators: connect ADC and TIM2

l 1 set of 10-bit analog-to-digital conversion ADC

- Analog input range: 0～VDD

- 8 external signal channels + 2 internal signal channels

- Support external delay trigger

l Multiple timers

- 1 16-bit advanced timer with dead-band control and emergency

Brake, providing PWM complementary output for motor control

- One 16-bit general purpose timer with input capture/output ratio

Comparison/PWM/pulse counting and incremental encoder input

- 2 watchdog timers (independent and windowed)

- System time base timer: 32-bit counter

l Standard communication interface:

- 1 USART interface

- 1 I2C interface

- 1 SPI interface

GPIO port:

- 3 groups of GPIO ports, 18 I/O ports

- Image 1 external interrupt

l Security features: 64-bit chip unique ID

l Debug mode: Serial single-wire debug interface

l Package type: SOP, TSSOP, QFN

尹小舟

Both are cheap

damiaa

It should be good. It's so cheap. Good!

小生意

ch32v003, has anyone used it in a real project? How is its stability?

xhackerustc

The ch32v003 is very popular among enthusiasts and electronics hobbyists because of its extremely low price. Some people even made a special ch32v003fun for developing corresponding software (to be honest, it works very well), and made a variety of things like handheld game consoles. I have only used the official development board of wch and did a lot of experiments, but I have never used it in actual projects. Stability is a big topic, which is related to board-level design, software, and the chip itself. I will leave it to friends who have used it in actual mass production projects to answer.

hjl2832

To be honest, I used a cheap domestic chip for a project and found that the IO driving ability was very poor. The internal pull-up method would drive the IIC bus incorrectly. An external resistor within 10K was required to make the waveform normal (actually measured waveforms within 4.7K were the most normal). There is no such problem when using those big brands.

This product was originally made by a big brand, but there was a chip shortage for a period of time, so we switched to domestic products. Unexpectedly, the PCB could not be used due to IO problems, and we manually added pull-up resistors to hundreds of boards one by one.

chejm

Has anyone used the domestic chip provided by the OP? Can you share your experience and chip performance?

尹小舟

hjl2832 posted on 2024-3-21 07:59 To be honest, I used a cheap domestic chip for a project and found that the IO driving capability was very poor. The internal pull-up method to drive the IIC bus would cause errors, and an external 10K ...

Don't you want to reserve it?

尹小舟

Yin Xiaozhou posted on 2024-3-31 21:15 Don't you want to reserve it?

If the situation is the same, it should be obvious during the evaluation.

hjl2832

Yin Xiaozhou posted on 2024-3-31 21:16 If the situation is the same, it should be able to be seen during the evaluation

Because it is a very mature product that has been in production. It was only for some reasons that it was changed to a domestic product. As we all know, many domestic products can be directly replaced by P2P, so there was no change in the hardware. The results of the subsequent tests also found that the problem was caused by the lengthening of the line, but the original microcontroller read the data of the sensor with the same line length normally. For the test waveform of the domestic problem, it was found that the waveform was not beautiful, so we knew to add a pull-up resistor. After adding the resistor, the square wave was very positive. And this problem is also related to the connected sensor. Different IIC sensors, some brands can work normally, and some are not normal, which also reflects the problem of load capacity from the side.