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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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Using Sensors to Detect and Measure
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Using Sensors to Detect and Measure
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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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Using Sensors to Detect and Measure
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Using Sensors to Detect and Measure
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Using Sensors to Detect and Measure
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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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Control Circuits Listing 11-4. Cont
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Control Circuits Listing 11-5. Cont
- Page 209 and 210: Wireless Links 12 Wireless Links Wi
- Page 211 and 212: Wireless Links Figure 12-2. This in
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- Page 217 and 218: through the LEDs. If you prefer an
- Page 219 and 220: Wireless Links Figure 12-6. Using a
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- Page 223 and 224: Wireless Links IREDs emit energy at
- Page 225 and 226: In the infrared link, the amount of
- Page 227 and 228: Calling Assembly-language Routines
- Page 229 and 230: into memory in the 8052-BASIC syste
- Page 231 and 232: 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 241 and 242: Calling Assembly-language Routines
- Page 243 and 244: • BASIC-52’s ON EX1 instruction
- Page 245 and 246: Calling Assembly-language Routines
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- 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: Related Products Figure 15-3. Blue
- 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 277 and 278: Programs for Loading Files Listing
- Page 279 and 280: Programs for Loading Files Listing
- Page 281 and 282: Number Systems Appendix C Number Sy
- Page 283 and 284: Number Systems This table shows the
- Page 285 and 286: Index Index A ADC, 158 - 169 addres
- Page 287 and 288: Index S sample and hold, 169 SBC, 3