ST72F32AK1T6

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The ST72F32AK1T6 microcontroller is an 8-bit microcontroller within the STMicroelectronics ST7 family. It comes with an architecture that allows users to write fast and powerful code in C/C++. It belongs to the class of embedded controllers, as defined in article 5 of the European Standardization Organization (ESO) directive on Embedded systems, and includes a wide range of features and development configurations that make it suitable for a variety of usage scenarios. This article discusses the application field and working principle of the ST72F32AK1T6 microcontroller.

System Architecture

The ST72F32AK1T6 microcontroller provides its users with a powerful 8-bit CPU architecture. Its core consists of a 90nm CMOS 8-bit 8051-based microprocessor with an embedded 16-bit single-cycle vectoring instruction set, which is capable of executing most popular 8051 instructions and interrupt vectors, and with an integrated 1.8V band gap regulator and an onboard voltage regulator. This makes it suitable for low-power applications that are powered by a 3V or lower source. The system also includes an 8-bit address bus, 8-bit data bus, and 8-bit interrupt request lines. Its memory map ranges from 32Kbytes of Flash, 2Kbytes of RAM and 256Kbytes of EEPROM. It includes 16- and 8-bit timer/capture/compare circuits, allowing to generate a number of interrupts and to measure short intervals of time. It features two enhanced UARTs, two 8051 compliant 8-bit PWMs, and an internal RTC with alarm and periodic wakeup functionality.

Power Consumption

The ST72F32AK1T6 microcontroller provides a low power consumption rate, with its power consumption levels ranging from 0.10 mA @ 3.3V in stand by mode to 2.6 mA @ 3.3V in clock active operation mode. Its low power consumption rate makes it suitable for a variety of applications, such as those that require long operating periods, those that require a low-power budget, or those that require a low average current consumption. Additionally, its clock active power consumption can be reduced using the integrated voltage regulator.

Input/Output

The ST72F32AK1T6 microcontroller is equipped with an extensive range of I/O communications, which include an extensive range of control and communication serial interfaces, such as I2C, SPI, and UART, as well as 12 general-purpose I/O port pins, 8 commonly used logic inputs, and 6 interrupts. Additionally, it provides an 8-bit A/D converter and a PWM module, making it suitable to interface various non-volatile memories and other external logic devices. Its I/O interfaces provide programmable input threshold, hysteresis, noise filter, and push-pull/ pull-up feature, allowing flexibility of experiment and fast design cycles.

Application Field

Due to its features and capabilities, the ST72F32AK1T6 microcontroller is suitable for applications that require a low power budget and flexibility when it comes to input and output options. These include applications such as portable hand-held device control, HVAC systems, home and industrial automation, building surveillance systems, and medical instrumentation. In addition, as it is an 8051 core-based processor, it is also suitable for a wide range of applications that require the 8051 instruction set, such as some embedded controllers and embedded systems, automotive systems, and board level products.

Working Principle

The ST72F32AK1T6 microcontroller follows the basic principle of a microcontroller, which is to execute instructions given to it by a program. It does so by reading the instructions stored in its memory, which can be in either PROM, EEPROM, or flash memory, and executing them one by one. During execution, the processor reads the data stored in its various memory locations and then performs various operations on the data. After execution of the instructions, any output is sent to the relevant I/O ports. The process is then repeated, allowing the microcontroller to control various external devices and execute user programmes.

Conclusion

In conclusion, the ST72F32AK1T6 microcontroller is an 8-bit microcontroller that provides its users with a powerful 8-bit CPU architecture, low power consumption levels, and extensive range of I/O communications. It is suitable for applications that require a low power budget and flexibility for input/output communication, such as portable hand-held device control, HVAC systems, and home and industrial automation. Additionally, its 8051 core-based processor makes it suitable for a wide range of applications that require the 8051 instruction set. It follows the basic principle of a microcontroller, where it executes instructions given to it by a program and then sends output to relevant I/O ports.

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