ATtiny48 datasheet(61/266 Pages) ATMEL

61 / 266 page

8008C–AVR–03/09

ATtiny48/88

Figure 10-6. Alternate Port Functions

(1)

Note:

1. WRx, WPx, WDx, RRx, RPx, and RDx are common to all pins within the same port. clk

I/O,

SLEEP, and PUD are common to all ports. All other signals are unique for each pin.

clk

RPx

RRx

WRx

RDx

WDx

PUD

SYNCHRONIZER

WDx:

WRITE DDRx

WRx:

WRITE PORTx

RRx:

READ PORTx REGISTER

RPx:

READ PORTx PIN

PUD:

PULLUP DISABLE

clk

I/O:

I/O CLOCK

RDx:

READ DDRx

SET

CLR

DIxn

AIOxn

DIEOExn

PVOVxn

PVOExn

DDOVxn

DDOExn

PUOExn

PUOVxn

PUOExn:

Pxn PULL-UP OVERRIDE ENABLE

PUOVxn:

Pxn PULL-UP OVERRIDE VALUE

DDOExn:

Pxn DATA DIRECTION OVERRIDE ENABLE

DDOVxn:

Pxn DATA DIRECTION OVERRIDE VALUE

PVOExn:

Pxn PORT VALUE OVERRIDE ENABLE

PVOVxn:

Pxn PORT VALUE OVERRIDE VALUE

DIxn:

DIGITAL INPUT PIN n ON PORTx

AIOxn:

ANALOG INPUT/OUTPUT PIN n ON PORTx

RESET

CLR

PINxn

PORTxn

DDxn

DIEOVxn

SLEEP

DIEOExn: Pxn DIGITAL INPUT-ENABLE OVERRIDE ENABLE

DIEOVxn: Pxn DIGITAL INPUT-ENABLE OVERRIDE VALUE

SLEEP:

SLEEP CONTROL

Pxn

I/O

PTOExn

PTOExn:

Pxn, PORT TOGGLE OVERRIDE ENABLE

WPx:

WRITE PINx

WPx

ATtiny48 Datasheet(PDF) 61 Page - ATMEL Corporation

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