MC68HC711E20CFN3

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Introduction

The MC68HC711E20CFN3 is an 8-bit wall-mounted low-voltage microcontroller integrated circuit (IC) designed and developed by Motorola Semiconductor Products Sector.[1] The MC68HC711E20CFN3 is built on a metal gate CMOS process and packaged in a 48-pin plastic dual inline package (PDIP). This low-voltage microcontroller is based on the MC68HC11 family and includes integrated features, such as 1K*14 or 512*14 RAM, 256 bytes of nonvoltage-maintained EEPROM, watchdog timer and a real-time clock. The MC68HC711E20CFN3 is suitable for a wide range of industrial and consumer control applications, and is compatible with existing software tools for the MC68HC11 family.[2]

Application Field of MC68HC711E20CFN3

The MC68HC711E20CFN3 is an 8-bit microcontroller suitable for various applications. It has been used in a wide range of application fields such as:

• System monitoring and control
• Factory automation
• Building control
• Industrial machines
• Motor control systems
• Home appliances
• Automotive systems, such as ABS and traction control
• Entertainment systems
• Voice recognition systems

The MC68HC711E20CFN3 has a wide range of features like low power consumption, interrupt capability, low reset-power operation, and dual real-time clock (RTC) inputs. These features make it suitable for a multitude of tasks in industry and consumer control applications.

Working Principle of MC68HC711E20CFN3

The MC68HC711E20CFN3 is a low-voltage 8-bit CMOS microcontroller. It is based on the MC68HC11 family and is capable of operating at voltages as low as 1.8 V. This microcontroller is designed to perform a variety of tasks, such as control of motors, relays, and appliances, logging data, and communicating with external devices. It also has an integrated 1K*14 or 512*14 RAM and 256 bytes of EEPROM.

The MC68HC711E20CFN3 includes features such as I/O multiplexer, 8-channel 8-bit timer, Serial Communications Interface (SCI), and 2-channel Input Capture/Output Compare (IC/OC) module. The 711E20 has a core instruction set which includes 16 arithmetic instructions, 7 logic instructions, 2 move instructions, 8 bit manipulation instructions, 14 branch instructions, 11 subroutine instructions, and 7 stack instructions.

The MC68HC711E20CFN3 also has a separate I/O bus which can be used for communication or byte-wide memory access. On power-up, the microcontroller will enter an idle state until it is reset, at which point it will execute instructions from the start of the main program. Instructions can be executed sequentially, or branches can be made using Jump and Branch instructions.

The MC68HC711E20CFN3 has an integrated Real-Time Clock/Calendar (RTC) module which can be used for keeping track of time or for data logging. The clock/calendar includes a register which stores alarm time and a flag bit which is set or reset when the alarm time matches the system time. This feature can be used to generate an interrupt or a signal which can be used to perform tasks.

The MC68HC711E20CFN3 also includes an integrated watchdog timer, which can be configured to reset the microcontroller if it is not able to complete its tasks within a specified period of time. This is useful in systems which require reliable operation.

Conclusion

The MC68HC711E20CFN3 is an 8-bit microcontroller suitable for various industrial and consumer control applications. It features low power consumption and a wide range of integrated features like 1K*14 or 512*14 RAM, 256 bytes of nonvoltage-maintained EEPROM, watchdog timer and a real-time clock. These features make it suitable for a multitude of tasks in industry and consumer control applications.

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