ATTINY48-PU datasheet(4/26 Pages) ATMEL

Part #	ATTINY48-PU

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

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Manufacturer	ATMEL [ATMEL Corporation]

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4

8008HS–AVR–04/11

ATtiny48/88

minimum pulse length is given in Table 22-3 on page 209. Shorter pulses are not guaranteed to

generate a reset.

The various special features of Port C are elaborated in “Alternate Functions of Port C” on page

72.

1.1.8

Port D (PD7:0)

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

PD[7:4] output buffers have symmetrical drive characteristics with both sink and source capabil-

ities, while the PD[3:0] output buffers have high sink capabilities. As inputs, Port D pins that are

externally pulled low will source current if the pull-up resistors are activated. The Port D pins are

tri-stated when a reset condition becomes active, even if the clock is not running.

The various special features of Port D are elaborated in “Alternate Functions of Port D” on page

75.

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