Rainbow-electronics ATmega3290P_V Manual de usuario descargar pdf (Pagina 77)

ATmega329/3210/649/6410

2552H–AVR–11/06

Note: 1. AIN0D and AIN1D is described in “DIDR1 – Digital Input Disable Register 1” on page

202.

Alternate Functions of Port F The Port F has an alternate function as analog input for the ADC as shown in Table 42.

If some Port F pins are configured as outputs, it is essential that these do not switch

when a conversion is in progress. This might corrupt the result of the conversion. If the

JTAG interface is enabled, the pull-up resistors on pins PF7(TDI), PF5(TMS) and

PF4(TCK) will be activated even if a reset occurs.

• TDI, ADC7 – Port F, Bit 7

ADC7, Analog to Digital Converter, Channel 7

TDI, JTAG Test Data In: Serial input data to be shifted in to the Instruction Register or

Data Register (scan chains). When the JTAG interface is enabled, this pin can not be

used as an I/O pin.

Table 41. Overriding Signals for Alternate Functions in PE3:PE0

Signal

Name

PE3/AIN1/

PCINT3

PE2/XCK/AIN0/

PCINT2

PE1/TXD/

PCINT1

PE0/RXD/PCINT

PUOE 0 XCK OUTPUT

ENABLE

TXEN RXEN

PUOV 0 XCK 0 PORTE0 • PUD

DDOE 0 0 TXEN RXEN

DDOV 0 0 1 0

PVOE 0 0 TXEN 0

PVOV 0 0 TXD 0

PTOE––––

DIEOE (PCINT3 •

PCIE0) +

AIN1D

(1)

(PCINT2 •

PCIE0) +

AIN0D

(1)

PCINT1 • PCIE0 PCINT0 • PCIE0

DIEOV PCINT3 • PCIE0 PCINT2 • PCIE0 1 1

DI PCINT3 INPUT XCK/PCINT2

INPUT

PCINT1 INPUT RXD/PCINT0

INPUT

AIO AIN1 INPUT AIN0 INPUT – –

Table 42. Port F Pins Alternate Functions

Port Pin Alternate Function

PF7 ADC7/TDI (ADC input channel 7 or JTAG Test Data Input)

PF6 ADC6/TDO (ADC input channel 6 or JTAG Test Data Output)

PF5 ADC5/TMS (ADC input channel 5 or JTAG Test mode Select)

PF4 ADC4/TCK (ADC input channel 4 or JTAG Test ClocK)

PF3 ADC3 (ADC input channel 3)

PF2 ADC2 (ADC input channel 2)

PF1 ADC1 (ADC input channel 1)

PF0 ADC0 (ADC input channel 0)

1 2 ... 72 73 74 75 76 77 78 79 80 81 82 ... 374 375

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