PIC16LF628AT-I/SO

Embedded - Microcontrollers

The PIC16LF628AT-I/SO is a microcontroller from the PIC16 L Family of the Precision Integrated Circuit Series by Microchip Technology. It is a low-power 8-bit CMOS microcontroller with Flash Memory, a timer for multiplexing and creating low-power applications. It has a voltage range of 2 – 5.5 Volts, 16K Flash Memory Program Memory, 13 I/O pins, and a watchdog timer among other features.

The PIC16LF628AT-I/SO is mainly used in embedded applications including automotive applications, appliances, home automation, healthcare, and security and industrial applications. This device is ideal for controlling audio, visual and motors, managing and monitoring data and analog controls. It is also suitable for applications where inverted logic, interrupts, port interrupt-on-change, operating temperature ranges and a full-duplex serial port is required.

Working Principles

The PIC16LF628AT-I/SO contains a central processing unit (CPU), memory for data and program storage, I/O and communication ports, a watchdog timer (WDT), and additional hardware for data manipulation functions. It has an 8-bit RISC processor which ROM, RAM, and NVR (non-volatile RAM). It also contains an instruction set with 33 different instructions, allowing software development using assembly languaeg, plus modular and structured programming.

The PIC16LF628AT-I/SO\'s CPU executes instructions stored in Flash memory. The instructions are either transferred directly to the CPU by the control logic, or by sending instructions through the data bus. The program counter (PC) can point to an address of the memory, telling the CPU to retrieve instructions from that address and execute them. The instructions are loaded into the instruction register (IR) and decoded by the control logic.

The CPU interfaces with the various I/O and communication ports through the programmable peripheral interface (PPI) and the system memory. The PPI provides the interfacing between the CPU and the peripherals, allowing for transfer of data and control signals. The system memory is used to store the data and instructions, which can be accessed by the CPU. The system memory also contains a data stack, allowing the CPU to rapidly access data stored in memory.

The PIC16LF628AT-I/SO also has an on-chip watchdog timer (WDT), which is used to monitor the system and reset the CPU if the system is not functioning correctly. The WDT has an adjustable prescale value, allowing for very accurate timing. It is used to detect events in the system, such as power failure or system errors, and can be used to quickly perform a system reset if necessary.

In addition to the on-chip peripherals and WDT, the PIC16LF628AT-I/SO also includes a wide range of protection features, such as power-on reset, brown-out reset, clock-edge sampling, and tested wake-up from sleep mode. These protection features ensure that the system is always operating within safe parameters.

The PIC16LF628AT-I/SO is an ideal microcontroller for applications requiring low power consumption, powerful performance and features. With its advanced features and low cost, it is well-suited for a wide range of embedded applications.