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Teknik Mikroprosesor(1)

Sarana Pendidikan Teknologi Aceh 2016-2020

Sarana Pendidikan Teknologi Aceh 2016-2020

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TEKNIK MIKROPROSESOR<br />

Gambar 3.37. Rangkaian uji baca tulis PPI 8255<br />

3. Jalan Operasi Dasar PPI 8255 :<br />

a. Proses Inisialisasi PPI 8255<br />

Tentukan data kata kendali pada Bus Data (S D7 - S D0)<br />

Contoh : 82H (Port A=Keluaran, Port B=Masukan ).<br />

<br />

<br />

SRS dibuka<br />

SA0 dan SA1 ditutup (Alamat Register Kontrol)<br />

S ditutup<br />

S dibuka<br />

S ditutup - dibuka (Operasi Menulis).<br />

Hasil LED PA7 - PA0 = Padam<br />

166

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