ATmega32A Datasheet - Sunrom Technologies

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<strong>ATmega32A</strong>The Comparator need not be used for pure connectivity testing, since all analog inputs areshared with a digital port pin as well.Figure 24-8.Analog ComparatorBANDGAPREFERENCEACBGACOAC_IDLEACMEADCENADC MULTIPLEXEROUTPUTFigure 24-9.General Boundary-scan Cell used for Signals for Comparator and ADCShiftDRToNextCellEXTESTFrom Digital Logic/From Analog Ciruitry01D Q D QG01To Analog Circuitry/To Digital LogicFromPreviousCellClockDRUpdateDR8155C–AVR–02/11242
<strong>ATmega32A</strong>Table 24-4.SignalNameBoundary-scan Signals for the Analog ComparatorDirection as Seen fromthe Comparator24.5.6 Scanning the ADCFigure 24-10 shows a block diagram of the ADC with all relevant control and observe signals. The Boundary-scan cell fromFigure 24-9 is attached to each of these signals. The ADC need not be used for pure connectivity testing, since all analoginputs are shared with a digital port pin as well.Figure 24-10. Analog to Digital ConverterDescriptionAC_IDLE Input Turns off Analogcomparator when trueACO Output Analog ComparatorOutputACME Input Uses output signal fromADC mux when trueACBG Input Bandgap ReferenceenableRecommended Inputwhen Not in UseWill become input to µCcode being executedOutput Values whenRecommended Inputs are Used1 Depends upon µC code beingexecuted00 Depends upon µC code beingexecuted0 Depends upon µC code beingexecutedVCCRENAREFIREFENTo Comparator2.56VrefMUXEN_7ADC_7MUXEN_6ADC_6MUXEN_5ADC_5MUXEN_4ADC_4SCTESTADCBGENPASSENEXTCHMUXEN_3ADC_3MUXEN_2ADC_2MUXEN_1ADC_1MUXEN_0ADC_0G10+G20+1.22VrefACTENPRECHDAC_9..0ADCENPRECHAREFAREF10-bit DAC +-DACOUTCOMPCOMPNEGSEL_2ADC_210x-20x-HOLDNEGSEL_1NEGSEL_0ADC_1ADC_0STACLKAMPENGNDENThe signals are described briefly in Table 24-5.8155C–AVR–02/11243
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ATmega32A2. OverviewThe Atmel ® AV
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ATmega32Ametrical drive characteris
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ATmega32A6.3.1 SREG - AVR Status Re
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ATmega32A6.4.1 The X-register, Y-re
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ATmega32AFigure 6-5.Single Cycle AL
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ATmega32AA return from an interrupt
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ATmega32AFigure 7-2.Data Memory Map
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ATmega32AEEPROM data corruption can
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ATmega32ASupport - Read-While-Write
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ATmega32AThe next code examples sho
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ATmega32A8.1.3 Flash Clock - clk FL
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ATmega32AThe CKSEL0 Fuse together w
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ATmega32A8.7 Calibrated Internal RC
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ATmega32A8.10 Register Description8
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ATmega32Aface, Timer/Counters, Watc
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ATmega32A9.8.4 Internal Voltage Ref
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ATmega32A10. System Control and Res
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ATmega32AFigure 10-3.MCU Start-up,
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ATmega32AADC is used. To reduce pow
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ATmega32AThe WDP2, WDP1, and WDP0 b
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ATmega32Athe case if the Reset Vect
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ATmega32A$382D out SPL,r16$382E sei
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ATmega32A12. I/O Ports12.1 Overview
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ATmega32AIf PORTxn is written logic
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ATmega32AThe following code example
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ATmega32AFigure 12-5. Alternate Por
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ATmega32ATable 12-3.Table 12-4 and
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ATmega32A• MOSI - Port B, Bit 5MO
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ATmega32A12.3.3 Alternate Functions
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ATmega32ATable 12-11. Overriding Si
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ATmega32A12.4 Register Description1
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ATmega32A12.4.13 PIND - Port D Inpu
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ATmega32Alow level interrupt is sel
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ATmega32A14. 8-bit Timer/Counter0 w
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ATmega32ASignal description (intern
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ATmega32Athe OCR0 value, the compar
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ATmega32AFigure 14-5.CTC Mode, Timi
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ATmega32AThe PWM resolution for the
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ATmega32AFigure 14-9. Timer/Counter
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ATmega32ATable 14-2. Waveform Gener
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ATmega32AThe Output Compare Registe
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ATmega32AFigure 15-1.T1/T0 Pin Samp
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ATmega32A16. 16-bit Timer/Counter11
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ATmega32Aput Compare Units” on pa
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ATmega32Athe main code and the inte
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ATmega32A16.5 Counter UnitThe main
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ATmega32AThe ICR1 Register can only
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ATmega32ARegister to either TOP or
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ATmega32AA change of the COM1x1:0 b
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ATmega32AThe PWM resolution for the
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ATmega32AUsing the ICR1 Register fo
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ATmega32ATable 16-3 shows the COM1x
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ATmega32A• Bit 7 - ICNC1: Input C
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ATmega32AThe Input Capture is updat
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ATmega32A17. 8-bit Timer/Counter2 w
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ATmega32AFigure 17-2.DATA BUSCounte
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ATmega32AThe setup of the OC2 shoul
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ATmega32AFigure 17-5.CTC Mode, Timi
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ATmega32A17.7.4 Phase Correct PWM M
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ATmega32AFigure 17-9. Timer/Counter
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ATmega32A• If Timer/Counter2 is u
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ATmega32AA FOC2 strobe will not gen
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ATmega32A17.11.2 TCNT2 - Timer/Coun
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ATmega32A17.11.7 SFIOR - Special Fu
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ATmega32Acommunication cycle when p
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ATmega32AAssembly Code Example (1)S
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ATmega32A18.3 SS Pin Functionality1
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ATmega32A18.3.4 SPSR - SPI Status R
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ATmega32A19. USART19.1 Features19.2
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ATmega32A19.2.1 AVR USART vs. AVR U
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ATmega32ATable 19-1.Operating ModeA
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ATmega32AThe frame format used by t
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ATmega32AThe Transmit Complete (TXC
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ATmega32AAssembly Code Example (1)U
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ATmega32AThe PE bit is set if the n
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ATmega32AFigure 19-7.Stop Bit Sampl
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ATmega32AIf the receiver is set up
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ATmega32A• Bit 0 - MPCM: Multi-pr
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ATmega32ATable 19-6.USBS Bit Settin
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ATmega32ATable 19-9.BaudRate(bps)Ex
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ATmega32ATable 19-11.BaudRate(bps)E
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ATmega32A20. Two-wire Serial Interf
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ATmega32Acondition is issued betwee
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ATmega32AFigure 20-6.Typical Data T
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ATmega32AFigure 20-9.Overview of th
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ATmega32A20.6 Using the TWIThe AVR
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ATmega32AAssembly code example C ex
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ATmega32ATable 20-2.Status Code(TWS
Page 191 and 192: ATmega32AFigure 20-12. Formats and
Page 193 and 194: ATmega32ATable 20-3.Status Code(TWS
Page 195 and 196: ATmega32AThe upper seven bits are t
Page 197 and 198: ATmega32AFigure 20-16. Formats and
Page 199 and 200: ATmega32ATable 20-5.Status Code(TWS
Page 201 and 202: ATmega32A4. The transfer must be fi
Page 203 and 204: ATmega32A20.9.2 TWCR - TWI Control
Page 205 and 206: ATmega32A20.9.5 TWAR - TWI (Slave)
Page 207 and 208: ATmega32A21.3 Register Description2
Page 209 and 210: ATmega32A22. Analog to Digital Conv
Page 211 and 212: ATmega32AIf differential channels a
Page 213 and 214: ATmega32Ain ADCSRA. The prescaler k
Page 215 and 216: ATmega32ATable 22-1.ConditionADC Co
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Page 219 and 220: ATmega32AFigure 22-9.ADC Power Conn
Page 221 and 222: INLATmega32AFigure 22-12. Integral
Page 223 and 224: ATmega32ATable 22-2.Correlation bet
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Page 227 and 228: ATmega32A22.9.4 SFIOR - Special Fun
Page 229 and 230: ATmega32A• TMS: Test Mode Select.
Page 231 and 232: ATmega32AThe TMS input must be held
Page 233 and 234: ATmega32A23.8 Using the JTAG Progra
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Page 237 and 238: ATmega32AThe active states are:•
Page 239 and 240: ATmega32AFigure 24-4. General Port
Page 241: ATmega32AFigure 24-7.Boundary-scan
Page 245 and 246: ATmega32ATable 24-5.SignalNameBound
Page 247 and 248: ATmega32ATable 24-6.Algorithm for U
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Page 265 and 266: ATmega32A25.9 Register Description2
Page 267 and 268: ATmega32A26. Memory Programming26.1
Page 269 and 270: ATmega32ATable 26-4.Fuse Low ByteFu
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Page 289 and 290: ATmega32AFigure 26-14. Programming
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ATmega32AFigure 26-17. Virtual Flas
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ATmega32A26.10.18 Reading the Flash
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ATmega32A27. Electrical Characteris
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ATmega32A27.3 Speed GradesFigure 27
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ATmega32Aantees that a Brown-out Re
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ATmega32ATable 27-3. SPI Timing Par
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ATmega32ATable 27-5. ADC Characteri
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ATmega32A28. Typical Characteristic
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ATmega32AFigure 28-4.Active Supply
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ATmega32AFigure 28-8.Idle Supply Cu
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ATmega32AFigure 28-12. Idle Supply
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ATmega32A28.5 Standby Supply Curren
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ATmega32AFigure 28-20. Reset Pull-u
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ATmega32AFigure 28-24. I/O Pin Sink
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ATmega32AFigure 28-28. Reset Input
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ATmega32AFigure 28-32. BOD Threshol
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ATmega32AFigure 28-36. Calibrated 8
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ATmega32AFigure 28-48. ADC Current
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ATmega32A28.12 Current Consumption
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ATmega32A29. Register SummaryAddres
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ATmega32A30. Instruction Set Summar
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ATmega32AMnemonics Operands Descrip
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ATmega32A32. Packaging Information3
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ATmega32A32.3 44M1DMarked Pin# 1 ID
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ATmega32A34. Datasheet Revision His
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ATmega32A8.9 Timer/Counter Oscillat
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ATmega32A18.2 Overview ............
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ATmega32A26 Memory Programming ....
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Atmel Corporation2325 Orchard Parkw
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ATmega32A Datasheet - Sunrom Technologies

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