ATTINY24A_08 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

ATTINY24A_08

8-bit Microcontroller with 2K/4K Bytes In-System Programmable Flash

Atmel Corporation 

ATtiny24A/44A

1.1.4

1.1.5

Port B also serves the functions of various special features of the ATtiny24A/44A as listed in

Section 10.2 “Alternate Port Functions” on page 57.

RESET

Reset input. A low level on this pin for longer than the minimum pulse length will generate a

reset, even if the clock is not running and provided the reset pin has not been disabled. The min-

imum pulse length is given in Table 20-4 on page 176. Shorter pulses are not guaranteed to

generate a reset.

The reset pin can also be used as a (weak) I/O pin.

Port A (PA7...PA0)

Port A is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The

Port A output buffers have symmetrical drive characteristics with both high sink and source

capability. As inputs, Port A pins that are externally pulled low will source current if the pull-up

resistors are activated. The Port A pins are tri-stated when a reset condition becomes active,

even if the clock is not running.

Port A has alternate functions as analog inputs for the ADC, analog comparator, timer/counter,

SPI and pin change interrupt as described in “Alternate Port Functions” on page 57.

3

8183AS–AVR–12/08

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