1. Microcontrollers and Microprocessors
Prepared by:
Greg Brownell
11/19/2018

2. Definitions Micro: Tiny Controller: Control – Decision-based Action
Processor: Process Data (crunch numbers)
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3. Z80 8-bit Microprocessor
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4. 68HC11 8-bit Microcontroller
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5. Embedded Controls: Examples
Microcontrollers
ASICs (Application-Specific Integrated Circuits)
PGAs (Programmable Gate Arrays)
PLDs (Programmable Logic Devices)
SOCs (System On a Chip)
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6. Microprocessors: Examples
Intel 8086, 80286, 80386, 80486, 80586
Zilog Z80, Z8, Z8000
AMD K6
Intel Pentium, Xeon, Itanium
Motorola 6800
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7. Comparison: 8-Bit Microcontroller 8-Bit Microprocessor Atribute Text
68HC11 (MicroStamp)
8-Bit Microprocessor
Z80
8-Bit Microcontroller
8-Bit Microprocessor
Atribute
Control/Monitor
Process Data
Function
Instructions
External
Application
Performance
Data Handling
Programming
Connections
Support
RISC: 145
Full Set: 158
Text
Text
Digital/Analog
Peripherals
Text
Embedded Logic
CPU Core
Text
Text
Text
Instructions/second
MFLOPS
I/O Pins
Bus-oriented
Text
Text
Internal ROM
External RAM
Text
20 pins
40 pins
Stand-alone
External Chipset
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8. Programming the MicroStamp
Create a Project using Integrated Development Environment
Write the Source Code using the built-in text editor
Include Links to Definition (header) files needed
Add your Files to the Project
Build the Project (compile programs)
Download Compiled Code to MicroStamp
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9. Creating a Project Open the IDE Application: ICC
Select “Project”, “New”
Enter a unique Name for your Project
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10. Write the Code Various Language Compilers Available
C Language is Versatile and Popular
MicroStamp uses a limited Subset of ANSI C
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11. Include Header Files Some Standard Functions from KERNEL.C
Other Library Routines from VECTOR.C
Use Standard #INCLUDE directives
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12. Adding Files to the Project
Simple Menu-driven Procedure
Select Files from the List
Pick “Project”, “Add Files”
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13. Building the Project Files can be Compiled Individually, or
Click the “Build Project” Button
Automatically Compiles Programs
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14. Download Code to Stamp Connect Serial Cable from PC Port
Run the program: MicroLoad.EXE
Under “Options” select MicroStamp 11
Hit “Load” and open your .S19 file
Follow the on-screen instructions
Click the Download button
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15. Running the Finished Program
Switch the MicroStamp from “boot” to “run” and from “load” to “code protect”
Press the Master Reset button
Return switches to “load” position to download another program
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16. Code Example: IFLAB.C #include"kernel.c" void _HC11Setup(){
*(unsigned char volatile*)(0x3D) = 0x01;
OPTION = 0x04; }
void main(void){
int ilevel;
int istep;
init();
ilevel=0 ;
display_digit(ilevel);
while(1){
istep=butcontrol();
ilevel=(ilevel+istep)%8;
#include"vector.c"
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17. Display Decoder Function
void display_digit(int data){
int i;
for(i=1;i<8;i++) clear_pin(i);
switch (data){
case 0:
set_pin(1);set_pin(2);set_pin(3);
set_pin(4);set_pin(5);set_pin(6);
break;
case 1:
set_pin(2);set_pin(3);
case 2:
set_pin(1);set_pin(2);set_pin(7);
set_pin(5);set_pin(4);
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18. 7-Segment LED: Numeric
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19. LED Display: Detail
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20. Hexadecimal Display (base 16)
Hexadecimal is used to represent numbers with a radix of 16.
It consists of the numeric digits 0-9 plus alpha characters A-F.
This “shorthand” notation is commonly used when writing binary computer code because fewer digits are required.
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21. Schematic Diagram
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22. Assignment Create and Build your own project
Modify the existing code: IFLAB.C
Change the Display output from 0-7
to A-H or define your own character set
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23. Special Notes Put the .c files in your own project folder
After demonstrating that your program runs, reload the original program from C:\ICC\learn_1\learn_1.s19
Leave your project folder on the laptop as evidence that you have completed lab
Back up your files and then delete them
If the serial port becomes unplugged, re-insert it matching the black pin to the dot
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