Introduction to commonly used MCU chips at home and abroad

Single chip microcomputer STM32L151CCU6

Introduction to common single chip analysis

HT: The tool is easy to use. DEMO is difficult. The cost is medium.

PIC: The tool is difficult to use, DEMO is easy to engage. The cost is high.

FREESCALE: The tool is difficult to use, DEMO is easy to engage. The cost is high.

STC/51: The tool is easy to use, DEMO is easy to engage. The cost is low.

AVR: The tool is easy to use, DEMO is easy to engage. The cost is medium.

MSP430: The tool is very easy to use, DEMO is easy to engage. The cost is high.

EMC: Tools are easy to use, DEMO is difficult to do. The cost is low.

SUNPLUS: Tools are difficult to use, DEMO is difficult. The cost is low.

TENX: Tools are difficult to use, DEMO is difficult. The cost is low.

OKI: The tool is difficult to use, DEMO is difficult to do. The cost is low.

EPSON: The tool is difficult to use, DEMO is easy to engage. The cost is low.

PHILIPS: The tool is easy to use, DEMO is easy to engage. The cost is high.

WINBOND: The tool is easy to use, DEMO is easy to engage. The cost is medium.

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A brief introduction of several commonly used single-chip chips in China:

PIC microcontroller:

It is a product of MICROCHIP company. Its outstanding features are small size, low power consumption, reduced instruction set, good anti-interference, high reliability, strong analog interface, good code confidentiality, and most chips have compatible. FLASH program memory chip.

EMC microcontroller:

It is a product of Taiwan Yilong Company. A large part of it is compatible with PIC 8-bit MCU, and the resources of compatible products are relatively more than PIC. The price is cheap, there are many series available, but the anti-interference is poor.

ATMEL MCU (51 MCU):

ATMEl's 8-bit MCU has two series of AT89 and AT90. AT89 series is 8-bit Flash MCU, compatible with 8051 series MCU, static clock mode; AT90 series MCU is enhanced RISC structure, full static working mode, internal load online Programming Flash microcontroller, also called AVR microcontroller.

PHLIPIS 51PLC series MCU (51 MCU):

PHILIPS's single-chip microcomputer is based on the 80C51 core microcontroller, embedded with power-down detection, analog and on-chip RC oscillator, which makes 51LPC meet many aspects in high-integration, low-cost, low-power application design. Performance requirements.

HOLTEK microcontroller:

Taiwan's Shengyang Semiconductor's single-chip microcomputer is cheap and has many types, but it has poor anti-interference and is suitable for consumer products.

TI company microcontroller (51 single chip):

Texas Instruments offers two series of general-purpose MCUs, TMS370 and MSP430. The TMS370 series MCUs are 8-bit CMOS MCUs with multiple memory modes and multiple peripheral interface modes for complex real-time control applications. MSP430 series MCUs are ultra-low 16-bit low-power microcontroller with high power consumption and high functional integration, especially suitable for applications requiring low power consumption

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International Electronics Corporation's microcontroller chip products:

(According to the company's instructions, readers can read the contents of Building 2, not too well to write together, write separately)

1. MOTOROLA microcontroller

MOTOROLA is the world's largest microcontroller manufacturer. There are more varieties, more choices, and more new products. In terms of 8-bit machines, there are 68HC05 and 68HC08, and 68HC05 has more than 30 series, more than 200 varieties, and the output has exceeded 2 billion. The 8-bit enhanced single-chip microcomputer 68HC11 also has more than 30 varieties, with an annual output of more than 100 million pieces. The grade product has 68HC12. The 16-bit machine 68HC16 also has more than ten varieties. The 683XX series of 32-bit single-chip microcomputers also has dozens of varieties. In recent years, with PowerPC, Coldfire, M.CORE, etc. as the CPU, the microcontrollers that DSP has not integrated for the auxiliary modules have also been introduced, and it is still the preferred brand of the single-chip microcomputer. One of the characteristics of the MOTOROLA microcontroller is that the clock frequency used at the same speed is much lower than that of the Intel-based microcontroller, which makes the high-frequency noise low and strong anti-interference ability, and is more suitable for industrial control and harsh environments. The past strategy of MOTOROLA 8-bit MCU is based on mask. Recently, OTP plan was introduced to adapt to the development trend of MCU. On 32-bit machine, M.CORE outperformed ARM7 in performance and power consumption.

2. Microchip Microcontroller

Microchip microcontrollers are the single-chip microcontrollers with the largest market share growth. Its main product is 16C series 8-bit single-chip microcomputer, CPU adopts RISC structure, only 33 instructions, running fast, and known as low price, the average price of single-chip microcomputer is less than one dollar. Microchip microcontrollers have no mask products, all of which are OTP devices (FLASH microcontrollers have been introduced in recent years - Editor's Note). Microchip emphasizes cost-optimized design, high volume, low grade, and price sensitive products.

3. Scenix microcontroller

The I/O module of the Scenix microcontroller is new. The integration and combination of I/O modules is an indispensable aspect of microcontroller technology. In addition to traditional I/O function modules such as parallel I/O, URT, SPI, I2C, A/D, PWM, PLL, DTMF, etc., new I/O modules are constantly appearing, such as USB, CAN, J1850, the most representative The MOTOROLA 32-bit microcontroller integrates I/O modules including various communication protocols, while the Scenix microcontroller introduces a new concept of virtual I/O in the processing of I/O modules. Scenix uses a RISC-based CPU that allows the CPU to operate up to 50MHz. The operating speed is close to 50 MIPS. With a powerful CPU, various I/O functions can be simulated in software. The package of the microcontroller is 20/28 pins. The company provides a variety of I / O library functions for implementing the functions of various I / O modules. These software-completed modules include multiple UARTs, multiple A/D, PWM, SPI, DTMF, FSK, LCD drivers, etc. These are modules that are usually implemented in hardware and are quite complex.

4. NEC microcontroller

NEC MCU self-contained system, with the highest output of 8-bit single-chip 78K series, also has 16-bit, 32-bit MCU. More than 16-bit MCUs use internal frequency multiplication technology to reduce the external clock frequency. Some microcontrollers use a built-in operating system. NEC's sales strategy focuses on serving large customers and investing considerable technical force to help large customers develop products.

5. Toshiba MCU

Toshiba MCU features four-bit machines to 64-bit devices. The 4-bit machine still has a large market in the field of home appliances. The 8-bit machine mainly has 870 series, 90 series, etc. This type of single-chip microcomputer allows the use of slow mode, and the power consumption is as low as 10uA when using 32K clock. The use of multiple sets of registers inside the CPU makes interrupt response and processing faster. Toshiba's 32-bit microcontrollers use the MIPS3000ARISC CPU architecture for VCD, digital cameras, image processing and other markets.

6. Fujitsu MCU

Fujitsu also has 8-bit, 16-bit and 32-bit microcontrollers, but 8-bit machines use the CPU core of a 16-bit machine. That is to say, the instructions used by the 8-bit machine and the 16-bit machine are the same, making development easier. The 8-bit MCU has the famous MB8900 series, and the 16-bit machine has the MB90 series. Fujitsu focuses on serving large companies and large customers to help large customers develop products.

7. Epson microcontroller

Epson is known for its expertise in manufacturing liquid crystal displays, so Epson microcontrollers are mainly used for the LCDs produced by the company. The characteristics of its MCU are that the LCD driver part is particularly well done. It is also very characteristic in terms of low voltage and low power consumption. At present, a 0.9V-powered single-chip microcomputer has been put on the market. In the near future, LCD-displayed watch-type single-chip microcomputers will use 0.5V power supply.

8.8051 single chip microcomputer

The 8051/31 type of single-chip microcomputer first introduced by Intel Corporation is also one of the largest single-chip microcomputers in the world. Because Intel Corporation focuses on the development of high-end chips compatible with PCs such as 186, 386, Pentium, etc. in the embedded application, the 8051-type MCUs are mainly produced by Philips, Samsung, Winbond and other companies. These companies have improved many features of the 8051 (such as timing characteristics) while maintaining compatibility with the 8051 microcontroller. Increased speed, reduced clock frequency, relaxed dynamic range of supply voltage, and reduced product price.

8. Zilog microcontroller

Z8 MCU is a product of Zilog Company. It adopts multi-accumulator structure and has strong interrupt processing capability. The product is OTP type, and the development tools of Z8 MCU can be cheap and good. Z8 MCUs are designed for low-end applications with low-cost advantages, mainly in 18-pin packages, with a ROM of 0.5-2k. Recently, Zilog has introduced the Z86 series of microcontrollers, which integrates inexpensive DSP units.

9. NS microcontroller

The COP8 microcontroller is a product of National Semiconductor Corporation. The company is known for producing advanced analog circuits and can produce high-level digital-analog hybrid circuits. The COP8 MCU integrates 16-bit A/D on-chip, which is rare in MCUs. The COP8 MCU uses an anti-EMI circuit internally, which is unique in the watchdog circuit and the wake-up mode of the MCU in the STOP mode. In addition, COP8's program encryption control is also doing a particularly good job.

10. Samsung MCU

Samsung MCU has KS51 and KS57 series 4-bit MCU, KS86 and KS88 series 8-bit MCU, KS17 series 16-bit MCU and KS32 series 32-bit MCU. Samsung MCU is an OTP-type ISP in-chip programming function. Samsung is known for producing memory chips, and is involved in the competition of microcontrollers in the form of oversupply in the memory market. Samsung introduced and digested the technology of developed countries in the technology of MCU, and produced compatible products, and then won by price advantage. For example, NEC technology is adopted on a 4-bit machine, Zilog Z8 technology is introduced on an 8-bit machine, ARM7 core is purchased on a 32-bit machine, and DEC technology and Toshiba technology are also available. The price of its single-chip die is quite competitive.

11. Winbond MCU

Winbond MCU is an 8051-class MCU. Their W78 series is compatible with the standard 8051, and the W77 series-enhanced 51 series has improved the timing of the 8051. At the same clock frequency, the speed is increased by 2.5 times, the FLASH capacity is from 4k to 64k, and there is an ISP function. In terms of 4-bit microcontrollers, Winbond has 921 series 741 series with LCD driver. In terms of 32-bit machines, Winbond uses HP's PA-RISC microcontroller technology to produce low-level 32-bit RISC microcontrollers.