The Microcontroller Idea Book - Jan Axelson's Lakeview Research

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Index Input/Output, see I/O instruction set, 6 Intel Hex format, 220, 224 interface chips, 98 interfacing to a port, 93 - 96 interpreters, 9 interrupts assembly language, 232 - 233 in 8052, 22 types, 112 - 114 K keypad, 116 - 124 keywords BASIC-52, 72 - 86 defined, 65 kilobyte, 273 L languages, programming, 8 - 9 latch, octal transparent, 26 - 27 LCD, 135, 152 LED, 125 - 135 lenses, 215 - 216 level translating analog, 167 - 168 digital, 93 - 96 light-emitting diode, 125 - 135 liquid-crystal display, 135 - 152 logic families, 29 - 20 unused gates, 34 M machine code, 8 manuals, 14 - 15 matrix, switch, 187 - 189 Megabyte, 273 memory accessing external, 20 - 22, 42 check, 38 decoding, 91 - 91 8052’s, 6 map, 87 - 89 mercury switch, 155 microcontroller, defined, 1 276 microprocessor, 2 mnemonics, 8 modules, program, 66 - 67 motor control, 191 - 198 MTOP, 38, 53, 55 multiplexed address/data bus, 20 N NMOS compatible logic, 29 versus CMOS, 6 nonvolatile memory, 47 - 61 number systems, 271 - 272 NVRAM, 48 - 56 O object file, 219 OE, 29 on/off switch, 33 op amp, gain control, 189 - 191 orientation, component, 32 - 33 oscillator design, 203 See also crystal, XTAL output enable, 29 P pc boards, 248 - 249 PGM EN, 22, 58 - 60 PGM PULSE, 22, 52 photocell, 157 port See I/O Port 1, 40 - 41 power supply connections, 22 EPROM-programming, 61 - 62 for 8052-BASIC, 14 system, 30 wireless link’s, 207 powering up, 35 PPI, 98 - 108 printed-circuit boards, 248 - 249 Procomm Plus, 36 PROG commands about, 53 - 60 simulating, 243 - 244 programmable peripheral interface, 98 - 108 program assembly-language, 217 - 238 crashes, 231 documenting, 67 exiting, 44 - 45 saving, 47 - 64 storage, 6 - 7 program enable, 22, 58 - 60 program pulse, 22, 52 program status word, 231 program store enable, 21, 26 programming commands, 22, 53 - 60 environments, 247 - 248 languages, 8 - 9 tips, 66 - 68 PSEN, 21, 26 psw, 231 PWM, 195 - 198 R radio link, 216 RAM choices, 28 - 29 in 8052, 20 use, 7 RD, 21, 26 RDANY, 26 read cycle, 29 of port, 96 - 97 signal, 21 references, 14 - 15 relay, 187 - 189 reserved words defined, 65 BASIC-52’s, 72 - 86 reset, 22, 26 ROM about, 7 in 8052, 17 ROM command, 54 RS-232, 30, 34 - 35 run mode, 66
Index S sample and hold, 169 SBC, 3 schematic reading, 31 system, 24 - 30 sensors, 153 - 170 serial port 8052’s, 22 RS-232, 30, 34 - 35 7-segment display, 129 - 138 simulator, 10 sine-wave generator, 226 - 229 single-board computer, 3 single-stepping, 10 SmartSocket, 48 - 49 software for uploading programs, 221 terminal-emulation, 15 solar cell, 165 - 166 source code, BASIC-52, 250 stack, 231 stepper motor, 191 - 195 subroutines, 66 - 67 switch matrix, 187 - 189 power, 185 - 187 press, detecting, 45 sensor as, 155 toggle and slide, 109 - 115 V vendors, 255 - 262 W watchdog timekeeper, 174 - 184 Windows terminal accessory, 36 wireless link, 199 - 216 WR, 21 write cycle, 29 signal, 21 to a port, 97 X XFER, 54 XTAL, 38 See also crystal T target system, 3 task, defining, 4 - 5 temperature sensor, 163 - 165 Terminal Accessory, Windows, 36 terminal emulation, 15 test equipment, 16 timekeeper, watchdog, 174 - 184 timers and counters in 8052, 21 use of, 171 - 184 transducer, 153 troubleshooting, 9 - 10, 37, 70 - 71 TTL compatible logic, 29 277
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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
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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 and 284: Number Systems This table shows the
Page 285: Index Index A ADC, 158 - 169 addres
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