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AT90S2313 Datasheet(PDF) 55 Page - ATMEL Corporation |
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AT90S2313 Datasheet(HTML) 55 Page - ATMEL Corporation |
55 / 92 page 55 AT90S2313 0839I–AVR–06/02 Figure 43. Port B Schematic Diagram (Pin PB7) Port D Three I/O memory address locations are allocated for the Port D: one each for the Data Register – PORTD, $12($32), Data Direction Register – DDRD, $11($31) and the Port D Input Pins – PIND, $10($30). The Port D Input Pins address is read-only, while the Data Register and the Data Direction Register are read/write. Port D has seven bi-directional I/O pins with internal pull-up resistors, PD6..PD0. The Port D output buffers can sink 20 mA. As inputs, Port D pins that are externally pulled low will source current if the pull-up resistors are activated. Some Port D pins have alternate functions as shown in Table 19: When the pins are used for the alternate function, the DDRD and PORTD Registers have to be set according to the alternate function description. Table 19. Port D Pin Alternate Functions Port Pin Alternate Function PD0 RXD (Receive data input for the UART) PD1 TXD (Transmit data output for the UART) PD2 INT0 (External interrupt 0 input) PD3 INT1 (External interrupt 1 input) PD4 TO (Timer/Counter0 external input) PD5 T1 (Timer/Counter1 external input) PD6 ICP (Timer/Counter1Input Capture pin) |
Similar Part No. - AT90S2313_02 |
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Similar Description - AT90S2313_02 |
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