Maxim-integrated MAXQ Family Users Guide: MAXQ8913 Supplement Manuale Utente Scaricare il pdf (Pagina 40)

MAXQ Family User’s Guide:

MAXQ8913 Supplement

6-8

6.2 Port Pin Examples

6.2.1 Port Pin Example 1: Driving Outputs on Port 0

move PO0, #000h ; Set all outputs low

move PD0, #0FFh ; Set all P0 pins to output mode

6.2.2 Port Pin Example 2: Receiving Inputs on Port 0

move PO0, #0FFh ; Set weak pullups ON on all pins

move PD0, #000h ; Set all P0 pins to input mode

nop ; Wait for external source to drive P0 pins

move Acc, PI0 ; Get input values from P0 (will return FF if

; no other source drives the pins low)

Maxim Integrated

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 113 114

Nessun commento

Maxim-integrated MAXQ Family Users Guide: MAXQ8913 Supplement Manuale Utente Pagina 40