Rainbow-electronics ATmega103L Manual do Utilizador descarregar pdf (Página 91)

ATmega603/103

Figure 70. Port E Schematic Diagram (Pins PE4, PE5, PE6 and PE7)

Port F

Port F is an 8-bit input port.

One I/O memory location is allocated for Port F, the Port F Input Pins - PINF, $00 ($20).

All Port F pins are connected to the analog multiplexer which further is connected to the A/D converter. The digital input

function of Port F can be used together with the A/D converter, allowing the user to use some pins of Port F and digital

inputs and other as analog inputs, at the same time.

Port F Input Pins Address - PINF

The Port F Input Pins address - PINF - is not a register, and this address enables access to the physical value on each Port

F pin.

Bit 76543210

$00 ($20) PINF7 PINF6 PINF5 PINF4 PINF3 PINF2 PINF1 PINF0 PINF

Read/WriteRRRRRRRR

Initial value Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z

DATA BUS

RESET

MOS

PULL-

PEn

WP:

WD:

RL:

RP:

RD:

WRITE PORTE

WRITE DDRE

READ PORTE LATCH

READ PORTE PIN

READ DDRE

4, 5, 6, 7

DDEn

PORTEn

SENSE CONTROL INTn

ISCn1 ISCn0

1 2 ... 86 87 88 89 90 91 92 93 94 95 96 ... 125 126

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Rainbow-electronics ATmega103L Manual do Utilizador Página 91