The Microcontroller Idea Book - Jan Axelson's Lakeview Research

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Appendix C 274 The Microcontroller Idea Book
Index Index A ADC, 158 - 169 address bus, 27 - 28 address latch disable, 22 address latch enable, 21, 29 alarm circuit, 178 - 184 ALE, 21, 29 ALEDIS, 22 algorithms, programming, 56 - BASIC, 246 - 247 57 Altair 8800, 2 analog-to-digital converter, 158 - 169 ASCII Hex format, 223 assembly language defined, 8 interfacing, 217 - 238 B BASIC compilers, 247 BASIC-52 booting, 35 - 38 customizing, 233 - 235 enhanced versions, 245 - 246 in external memory, 239 - 244 keywords, 72 - 86 manuals, 14 - 15, 251 - 252 programming tips, 65 - 71 running programs, 39 - 40 source code, 250 Basikit, 247 BBS’s, 254 binary file format, 223 numbers, 272 books, 251 - 253 bootup options, 54 - 55 breakpoint, 10 bus See address, data C calendar functions, 174 - 184 capacitors, decoupling, 30 chip, choosing, 5 - 6 clock, real-time, 42, 171 - 184 CMOS compatible logic, 29 versus NMOS, 6 code memory, 21, 88 COM port, 36 command mode, 66 companies, 255 - 262 comparator, 157 - 158 compilers defined, 9 computer, host, 3, 15 - 16 construction materials, 14 tips, 31 - 32 CONTROL+C, 40, 44 - 45 control circuits, 185 - 198 CPU, 17 crashes, program, 40 cross assembler, 219 crystal accuracy, 172 choosing, 26 See also XTAL D DAC, 227 - 228 data bus, 27 data memory, 21 debugging, 9 - 10, 37, 70 - 71 decimal numbers, 271 - 272 detector, 153 development system, 9 - 10 digital-to-analog converter, 227 - 228 disk storage, 63 - 64 displays, 125 - 152 E EA, 22, 25 EEPROM, 7, 49 - 56 8051 family, 15 - 16 8052-BASIC about, 11 - 26 NMOS versus CMOS, 6 8255, 98 - 108 embedded controller, 1 emulator, 10 environments, programming, 247 - 248 EPROM about, 6 - 7 adding, 56 - 60 programming, 236 - 238 testing programs in, 9 erasing NVRAM, EEPROM, 55 errors, finding program, 9 - 10, 70 - 71 executable file, 219 external memory accessing, 21 - 22, 42 circuits, 25 - 29 F Flash EPROM, 7 formats, file, 222 - 224 FPROG using, 53, 55 circuits, 60 - 61 simulating, 243 - 244 G gain control, op amp, 189 - 191 GET, 44 - 45 H HEX2RAM.BAS, 264 - 265 hexadecimal numbers, 70, 272 - 273 HEXLOAD.BAS, 266 - 269 history of microcomputers, 2 - 3 host computer, 3 I I/O ports adding, 89 - 108 in 8052, 20 - 22 Port 1, 40 - 41 infrared, 199 - 215 275
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The Microcontroller Idea Book Circu
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Table of Contents Chapter 1 Microco
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Chapter 11 Control Circuits 185 Swi
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Introduction Introduction This book
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A chapter on assembly-language inte
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Microcontroller Basics 1 Microcontr
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But along with cheap, powerful, and
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makes sense. For simpler designs, a
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Microcontroller Basics Several tech
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Interpreters and compilers are two
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Inside the 8052-BASIC 2 Inside the
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Inside the 8052-BASIC • You can a
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hardware manuals. For programming,
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Inside the 8052-BASIC Figure 2-2 Pi
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Inside the 8052-BASIC Table 2-2. (p
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Inside the 8052-BASIC Code and data
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Powering Up 3 Powering Up This chap
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Powering Up Table 3-1. Parts list f
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Powering Up Figure 3-2. Truth table
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Powering Up Jumper J3 chooses the c
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Powering Up Figure 3-3. This is the
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Powering Up Construction Tips These
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Powering Up Serial Connectors Conne
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You’re now ready to power up the
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Powering Up PRINT XTAL Line Editing
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Powering Up PORT 1 Bit Values: Bit
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Powering Up Listing 3-3. Allows use
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10 CLOCK 1:TIME=0:SEC=0 20 A=0 30 P
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Saving Programs 4 Saving Programs I
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guaranteed for at least ten years.
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Saving Programs Figure 4-3. Circuit
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Jumper J4 is optional. It enables y
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memory on bootup. This is what allo
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This is the recommended algorithm f
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Saving Programs Figure 4-5. Additio
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problems with EPROMs that have a 10
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supply. The chip requires an additi
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Programming 5 Programming When you
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Subroutines have two advantages. Fi
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Programming • Hexadecimal numbers
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Programming It can be hard to find
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Programming Math Operators = + - *
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Programming expression / expression
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Programming DO: [program statements
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Programming LOG(expression) Returns
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Programming PH0.@ Same as PRINT@, b
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Programming RCAP2 Retrieves or assi
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Programming PRINT TAB(2) “hello
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Inputs and Outputs 6 Inputs and Out
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Unassigned space remains in the mem
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U11 is a 74HCT138 3-to-8-line decod
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If you wish, you can wire U14’s i
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Inputs and Outputs Figure 6-4. Outp
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Inputs and Outputs Listing 6-2. Set
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The 82C55 also has CMOS-compatible
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Inputs and Outputs Pin Symbol Input
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Inputs and Outputs An 8255 Interfac
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Inputs and Outputs XBY(0FC03h)=9BH
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To set or clear a different bit, de
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Switches and Keypads 7 Switches and
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Switches and Keypads Figure 7-2. Us
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exact value depending on the switch
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Switches and Keypads Figure 7-4. Tw
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Switches and Keypads Figure 7-6. A
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Switches and Keypads Custom Keypads
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Switches and Keypads • A single c
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Switches and Keypads Listing 7-3. T
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Displays 8 Displays In addition to
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Displays Figure 8-1. LED interfaces
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Displays Figure 8-2. Ways to connec
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Displays Figure 8-4. Four output po
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Displays Figure 8-5. The ICM7218D c
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In Figure 8-5’s circuit, an 82(C)
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Displays Figure 8-7. With the TC721
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Displays Figure 8-8. With a charact
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Table 8-1. LCD modules containing t
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Each character in the CG ROM and CG
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Displays Interfacing Full control o
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Displays Listing 8-4 (page 2 0f 2).
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Displays Listing 8-5. Displays key
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Displays Listing 8-6 (page 2 of 2).
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Using Sensors to Detect and Measure
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• What power supplies are availab
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different ground symbols for the tw
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10 REM use single-ended mode 20 REM
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Clocks and Calendars 10 Clocks and
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Listing 10-1. Uses BASIC-52’s rea
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Clocks and Calendars Figure 10-1. P
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Clocks and Calendars Table 10-1. Re
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If you want an alarm frequency othe
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Clocks and Calendars Listing 10-3 (
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Clocks and Calendars Listing 10-3 (
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Control Circuits 11 Control Circuit
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the LSTTL part, and wire the desire
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Control Circuits Listing 11-1. Cont
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Control Circuits Listing 11-2. Demo
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Control Circuits disables the outpu
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Wireless Links 12 Wireless Links Wi
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Wireless Links Figure 12-2. This in
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Wireless Links Because there are th
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Wireless Links Figure 12-4. The GP1
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through the LEDs. If you prefer an
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Wireless Links Figure 12-6. Using a
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Wireless Links Figure 12-7. Using a
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Wireless Links IREDs emit energy at
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In the infrared link, the amount of
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Calling Assembly-language Routines
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into memory in the 8052-BASIC syste
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2048h in code memory. This is becau
Page 233 and 234: Binary value 1100 0101 Hex equivale
Page 235 and 236: Successful assembly is a good sign,
Page 237 and 238: statement must match the address in
Page 239 and 240: Calling Assembly-language Routines
Page 243 and 244: • BASIC-52’s ON EX1 instruction
Page 249 and 250: Running BASIC-52 from External Memo
Page 251 and 252: 14-1 for longer delays between writ
Page 253 and 254: In Figure 3-1, tie pin 31 of U2 (EA
Page 255 and 256: Related Products 15 Related Product
Page 257 and 258: Finally, a compiled BASIC program u
Page 259 and 260: Related Products Figure 15-3. Blue
Page 261 and 262: Sources Appendix A Sources This App
Page 263 and 264: Programming and Interfacing the 805
Page 265 and 266: Sources Product Vendors The followi
Page 267 and 268: Sources Electronics 123 17921 Rowla
Page 269 and 270: Sources Micro Future 40944 Cascado
Page 271 and 272: Sources Siemens Components 2191 Lau
Page 273 and 274: Programs for Loading Files Appendix
Page 275 and 276: Programs for Loading Files Listing
Page 281 and 282: Number Systems Appendix C Number Sy
Page 283: Number Systems This table shows the
Page 287 and 288: Index S sample and hold, 169 SBC, 3
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The Microcontroller Idea Book - Jan Axelson's Lakeview Research

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