ATmega32A Datasheet - Sunrom Technologies

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<strong>ATmega32A</strong>Table 12-3.Table 12-4 and Table 12-5 relate the alternate functions of Port A to the overriding signalsshown in Figure 12-5 on page 56.Table 12-4.Port PinPort A Pins Alternate FunctionsAlternate FunctionPA7 ADC7 (ADC input channel 7)PA6 ADC6 (ADC input channel 6)PA5 ADC5 (ADC input channel 5)PA4 ADC4 (ADC input channel 4)PA3 ADC3 (ADC input channel 3)PA2 ADC2 (ADC input channel 2)PA1 ADC1 (ADC input channel 1)PA0 ADC0 (ADC input channel 0)Overriding Signals for Alternate Functions in PA7:PA4Signal Name PA7/ADC7 PA6/ADC6 PA5/ADC5 PA4/ADC4PUOE 0 0 0 0PUOV 0 0 0 0DDOE 0 0 0 0DDOV 0 0 0 0PVOE 0 0 0 0PVOV 0 0 0 0DIEOE 0 0 0 0DIEOV 0 0 0 0DI – – – –AIO ADC7 INPUT ADC6 INPUT ADC5 INPUT ADC4 INPUT8155C–AVR–02/1158
<strong>ATmega32A</strong>Table 12-5.Overriding Signals for Alternate Functions in PA3:PA0Signal Name PA3/ADC3 PA2/ADC2 PA1/ADC1 PA0/ADC0PUOE 0 0 0 0PUOV 0 0 0 0DDOE 0 0 0 0DDOV 0 0 0 0PVOE 0 0 0 0PVOV 0 0 0 0DIEOE 0 0 0 0DIEOV 0 0 0 0DI – – – –AIO ADC3 INPUT ADC2 INPUT ADC1 INPUT ADC0 INPUT12.3.2 Alternate Functions of Port BThe Port B pins with alternate functions are shown in Table 12-6.Table 12-6.Port PinPB7PB6PB5PB4PB3PB2PB1PB0Port B Pins Alternate FunctionsAlternate FunctionsSCK (SPI Bus Serial Clock)MISO (SPI Bus Master Input/Slave Output)MOSI (SPI Bus Master Output/Slave Input)SS (SPI Slave Select Input)AIN1 (Analog Comparator Negative Input)OC0 (Timer/Counter0 Output Compare Match Output)AIN0 (Analog Comparator Positive Input)INT2 (External Interrupt 2 Input)T1 (Timer/Counter1 External Counter Input)T0 (Timer/Counter0 External Counter Input)XCK (USART External Clock Input/Output)The alternate pin configuration is as follows:• SCK – Port B, Bit 7SCK: Master Clock output, Slave Clock input pin for SPI. When the SPI is enabled as a Slave,this pin is configured as an input regardless of the setting of DDB7. When the SPI is enabled asa Master, the data direction of this pin is controlled by DDB7. When the pin is forced by the SPIto be an input, the pull-up can still be controlled by the PORTB7 bit.• MISO – Port B, Bit 6MISO: Master Data input, Slave Data output pin for SPI. When the SPI is enabled as a Master,this pin is configured as an input regardless of the setting of DDB6. When the SPI is enabled asa Slave, the data direction of this pin is controlled by DDB6. When the pin is forced by the SPI tobe an input, the pull-up can still be controlled by the PORTB6 bit.8155C–AVR–02/1159
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ATmega32A2. OverviewThe Atmel ® AV
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ATmega32Ametrical drive characteris
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Page 11 and 12: ATmega32A6.4.1 The X-register, Y-re
Page 13 and 14: ATmega32AFigure 6-5.Single Cycle AL
Page 15: ATmega32AA return from an interrupt
Page 18 and 19: ATmega32AFigure 7-2.Data Memory Map
Page 20 and 21: ATmega32AEEPROM data corruption can
Page 22 and 23: ATmega32ASupport - Read-While-Write
Page 24 and 25: ATmega32AThe next code examples sho
Page 26 and 27: ATmega32A8.1.3 Flash Clock - clk FL
Page 28 and 29: ATmega32AThe CKSEL0 Fuse together w
Page 30 and 31: ATmega32A8.7 Calibrated Internal RC
Page 32 and 33: ATmega32A8.10 Register Description8
Page 34 and 35: ATmega32Aface, Timer/Counters, Watc
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Page 38 and 39: ATmega32A10. System Control and Res
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Page 46 and 47: ATmega32Athe case if the Reset Vect
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Page 50 and 51: ATmega32A12. I/O Ports12.1 Overview
Page 52 and 53: ATmega32AIf PORTxn is written logic
Page 54 and 55: ATmega32AThe following code example
Page 56 and 57: ATmega32AFigure 12-5. Alternate Por
Page 60 and 61: ATmega32A• MOSI - Port B, Bit 5MO
Page 62 and 63: ATmega32A12.3.3 Alternate Functions
Page 64 and 65: ATmega32ATable 12-11. Overriding Si
Page 66 and 67: ATmega32A12.4 Register Description1
Page 68 and 69: ATmega32A12.4.13 PIND - Port D Inpu
Page 70 and 71: ATmega32Alow level interrupt is sel
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Page 75 and 76: ATmega32ASignal description (intern
Page 77 and 78: ATmega32Athe OCR0 value, the compar
Page 79 and 80: ATmega32AFigure 14-5.CTC Mode, Timi
Page 81 and 82: ATmega32AThe PWM resolution for the
Page 83 and 84: ATmega32AFigure 14-9. Timer/Counter
Page 85 and 86: ATmega32ATable 14-2. Waveform Gener
Page 87 and 88: ATmega32AThe Output Compare Registe
Page 89 and 90: ATmega32AFigure 15-1.T1/T0 Pin Samp
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Page 93 and 94: ATmega32Aput Compare Units” on pa
Page 95 and 96: ATmega32Athe main code and the inte
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Page 99 and 100: ATmega32AThe ICR1 Register can only
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Page 103 and 104: ATmega32AA change of the COM1x1:0 b
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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 following code example
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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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ATmega32AThe following code example
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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
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ATmega32AFigure 20-12. Formats and
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ATmega32AThe upper seven bits are t
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ATmega32AFigure 20-16. Formats and
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ATmega32A4. The transfer must be fi
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ATmega32A20.9.2 TWCR - TWI Control
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ATmega32A20.9.5 TWAR - TWI (Slave)
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ATmega32A21.3 Register Description2
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ATmega32A22. Analog to Digital Conv
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ATmega32AIf differential channels a
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ATmega32Ain ADCSRA. The prescaler k
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ATmega32ATable 22-1.ConditionADC Co
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ATmega32AIf the user has a fixed vo
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ATmega32AFigure 22-9.ADC Power Conn
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INLATmega32AFigure 22-12. Integral
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ATmega32ATable 22-2.Correlation bet
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ATmega32ATable 22-4.MUX4:011010 ADC
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ATmega32A22.9.4 SFIOR - Special Fun
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ATmega32A• TMS: Test Mode Select.
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ATmega32AThe TMS input must be held
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ATmega32A23.8 Using the JTAG Progra
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ATmega32A24.3.1 Bypass RegisterThe
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ATmega32AThe active states are:•
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ATmega32AFigure 24-4. General Port
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ATmega32AFigure 24-7.Boundary-scan
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ATmega32ATable 24-4.SignalNameBound
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ATmega32ATable 24-5.SignalNameBound
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ATmega32ATable 24-6.Algorithm for U
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ATmega32ATable 24-7. ATmega32A Boun
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ATmega32ATable 24-7. ATmega32A Boun
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ATmega32A25. Boot Loader Support -
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ATmega32AFigure 25-1.Read-While-Wri
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ATmega32Amemory by SPM instruction.
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ATmega32ANotes: 1. The different va
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ATmega32A25.8.8 EEPROM Write Preven
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ATmega32Asbiw loophi:looplo, 2brne
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ATmega32A25.9 Register Description2
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ATmega32A26. Memory Programming26.1
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ATmega32ATable 26-4.Fuse Low ByteFu
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ATmega32ATable 26-7.Signal Name inP
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ATmega32Achanged. A Chip Erase must
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ATmega32AFigure 26-3. Programming t
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ATmega32A3. Set BS1 to “0” and
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ATmega32A26.7.14 Parallel Programmi
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ATmega32A26.9 SPI Serial Programmin
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ATmega32Awithout chip erasing the d
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ATmega32A26.9.4 SPI Serial Programm
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ATmega32A• Update-DR: The program
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ATmega32AFigure 26-14. Programming
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ATmega32AFigure 26-15. JTAG Program
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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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