NEC PD75P402 Manual do Utilizador descarregar pdf (Página 186)

175

CHAPTER 9. INSTRUCTION SET

9.4.12 Input/Output Instructions

IN A, PORTn

Function: A ← PORTn; n = N3 to N0 : 0 to 3, 5, 6

Transfers the contents of the port specified by PORTn (n = 0 to 3, 5, 6) to the A register.

Note Only 0 to 3, 5 or 6 can be specified at n.

Output latch data (output mode) or pin data (input mode) is fetched according to input/output mode

specification.

OUT PORTn, A

Function: PORTn ← A; n = N3 to N0 : 2, 3, 5, 6

Transfers the contents of the A register to the output latch of the port specified by PORTn (n = 2, 3, 5, 6)

Note Only 2, 3, 5, or 6 can be specified at n.

1 2 ... 181 182 183 184 185 186 187 188 189 190 191 ... 194 195

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NEC PD75P402 Manual do Utilizador Página 186