Проектирование микропроцессорной системы контроля и управления объектом. Общие принципы проектирования микропроцессорных систем, страница 20

                                                                                      A     DC      0                   SELOPORT1

                                                    A2                            0                  1                   SELOPORT2

                                                    A3                            1                  2                   SELOPORT3

                                                     A4                            2                  3                   SELOPORT4

                                                                                                          4                   SELOPORT5

                                                    A5         1                                     5                   SELOPORT6

                                                     A6                           &                  6                   SELOPORT7

                                                     A7                                                7                    SELOPORT8

Рис. 3.16. ДешифраторадресовпортовдляПУ

                                +5B

 

                                                                                                DI       RG

   “W1”           SA1                                                                0

   “W2”           SA2                                                                1

   “W3”           SA3                                                                2                              +5B

   “W4”           SA4                                                                3                                                 

                                                                                                4                                                              R      T    INT1

   “Останов”  SA5                                                                5                                       SB3

                                                                                                6

   “Пуск”        SB2                                                                7                                                              S

 

                                                                                “1”         C

                                            IOR                                                                                 “Прерывание”

                                                                          1                    OE

                                 SELIPORT

Рис. 3.17. Схемы подключения переключателей и кнопок на ПУ

                                                             U7

                                    PT

    F2_ТТЛ            CLK0                                 &                              1                                                +5В

                                        OUT0

“1”           GATE0                                                                                VD1

+U_ИП

                                                                                                                                                   

 

BA1

                                    PT

                                                                                                                       VT1

                           CLK1                                &

                                        OUT1

        “1”            GATE1                                                                                                                  VT2