EET 430 - Micro-Controllers
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A micro-controller is:
a computer on a chip
A typical MCU applications reads inputs to control outputs by:
Reading inputs from the sensors, and adjusting the control signal accordingly
How many bits does the 68HC11 use for an address?
How many bits does the 68HC11 use for data?
The difference between the single chip and expanded multiplexed mode of MCU is:
Use expanded multiplexed mode, a MCU may have less I/O (input/output) ports, but more memory.
Why is the 68HC11 not able to address more than 64 K bytes?
Because it uses 16 bit for memory address.
What does a reset line do for a MCU?
It will bring the MCU to the initial condition.
What are the control and status registers of an MCU?
They are dedicated memory locations used for I/O controls and monitoring.
What is used for conditioning I/O signal levels?
A circuit called buffers and converters.
What is an address range?
The maximum number if bytes of memory that an MCU can handle.
What is a memory map?
A diagram that shows an MCU's total memory and how it is configured.
What is an MCU's I/O port?
A collection of pins on a MCU used to connect to external devices.
What would you like to do?
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