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ATTINY87 Datasheet(PDF) 5 Page - ATMEL Corporation |
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ATTINY87 Datasheet(HTML) 5 Page - ATMEL Corporation |
5 / 292 page 5 8265A–AVR–08/10 ATtiny87/ATtiny167 1.5 Pin Description 1.5.1 VCC Supply voltage. 1.5.2 GND Ground. 1.5.3 AVCC Analog supply voltage. 1.5.4 AGND Analog ground. 1.5.5 Port A (PA7:PA0) Port A is an 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 also serves the functions of various special features of the ATtiny87/167 as listed on Section 9.3.3 “Alternate Functions of Port A” on page 76. 1.5.6 Port B (PB7:PB0) Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port B output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port B pins that are externally pulled low will source current if the pull-up resistors are activated. The Port B pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port B also serves the functions of various special features of the ATtiny87/167 as listed on Section 9.3.4 “Alternate Functions of Port B” on page 81. |
Similar Part No. - ATTINY87_10 |
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Similar Description - ATTINY87_10 |
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