SX20AC/SS-G

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SX20AC and SS-G are two kinds of microcontrollers that are used in many electronic applications. The main difference between them is the amount of memory and the number of input/output pins. SX20AC has 64-pin package with up to 512K of Flash memory while the SS-G comes with 96-pin package with up to 1MB of Flash memory. Both microcontrollers have on-chip oscillators, internal voltage regulation, timers, interrupt logic and power-saving features.

The SX20AC/SS-G contain both the ARM core and the 8051 core. On the ARM core, users can create programs in the Cortex-A8 ISA which is an instruction set for x86-based computing architecture. On the 8051 core, programs can also be written in the 8051 proprietary instruction set. This allows the microcontroller to support both 8-bit and 16-bit applications.

The SX20AC/SS-G can be used for embedded applications such as industrial, automotive and consumer products. They are ideal for applications that require embedded control and can interface with other peripherals. The low power consumption and the ability to perform fast processor operations make them ideal for energy-efficient and rugged applications.

The SX20AC/SS-G also have advanced features such as a power-saving mode, built-in ADC/DAC converters, multiple clock sources, embedded RTC, LCD controller and an interrupt controller. They also have a wide range of serial communication protocols such as I2C, SPI, UART, USB and CAN.

The working principle of the SX20AC/SS-G can be described as follows:

The microcontroller starts by executing the reset vector that is specified in memory. It then reads the flash memory and loads the instructions that are associated with the reset vector into the instruction register. It then executes these instructions one by one. The microcontroller will keep executing the instructions until it encounters an interrupt signal or when it reaches the end of the program. It then jumps to the corresponding interrupt vector and starts executing the instructions associated with it.

The SX20AC/SS-G use an embedded Event Detector module to detect external events and generate interrupt signals. The events can be detected by the processor when they occur. These events can include an input signal, a timer interrupt, a serial communication event, a memory access and an event from an external sensor.

The SX20AC/SS-G also feature a power management controller (PMC) that can detect when the device is not in use and switches to a low power mode. This saves power and increases the battery life of applications. The PMC allows for complex power management configurations that can be individually tailored for each application.

The SX20AC/SS-G are widely used in embedded applications due to their low power consumption, robust architecture, fast processor performance and wide range of communication protocols. They are ideal for applications that require reliable embedded control and a high level of integration.

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