Jameco-electronics Rabbit 3000 Manual do Utilizador Página 146

  • Descarregar
  • Adicionar aos meus manuais
  • Imprimir
  • Página
    / 349
  • Índice
  • MARCADORES
  • Avaliado. / 5. Com base em avaliações de clientes
Vista de página 145
Users Manual 137
9.5 Parallel Port E
Parallel Port E, shown in Figure 9-2, has eight I/O pins that can be individually pro-
grammed as inputs or outputs. PE7 is used as the slave port chip select when the slave port
is enabled. Each of the port E outputs can be configured as an I/O strobe. In addition, four
of the port E lines can be used as interrupt request inputs. The output registers are cas-
caded and timer-controlled, making it possible to generate precise timing pulses.
Figure 9-2. Parallel Port E Block Diagram
PE7
PE4
I/O Data
perclk/2
Timer A1
Timer B1
Timer B2
perclk/2
Timer A1
Timer B1
Timer B2
PE3
PE0
I6
/scs
Inputs
I4
I7
I5
I2
I0
I3
I1
INT1
INT0
INT1
INT0
Vista de página 145
1 2 ... 141 142 143 144 145 146 147 148 149 150 151 ... 348 349

Comentários a estes Manuais

Sem comentários