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ATtiny167-15XZ Datasheet(PDF) 6 Page - ATMEL Corporation |
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ATtiny167-15XZ Datasheet(HTML) 6 Page - ATMEL Corporation |
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6 / 282 page  6 7728D–AVR–07/09 ATtiny87/ATtiny167 1.7 Pin Description 1.7.1 Vcc Supply voltage. 1.7.2 GND Ground. 1.7.3 AVcc Analog supply voltage. 1.7.4 AGND Analog ground. 1.7.5 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. 1.7.6 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. 1.8 Resources A comprehensive set of development tools, application notes and datasheets are available for download on http://www.atmel.com/avr. 1.9 About Code Examples This documentation contains simple code examples that briefly show how to use various parts of the device. These code examples assume that the part specific header file is included before compilation. Be aware that not all C compiler vendors include bit definitions in the header files and interrupt handling in C is compiler dependent. Please confirm with the C com- piler documentation for more details. |
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Similar Description - ATtiny167-15XZ |
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