NEC PD75P402 Manual do Utilizador descarregar pdf (Página 56)

CHAPTER 5. PERIPHERAL HARDWARE FUNCTIONS

Fig. 5-4 Configuration of Ports 2 and 6

* Input/output mode specification is performed by bit 2 (PM2) of PMGB for port 2 and by bits 4 to 7 (PM60 to 63)

of PMGA for port 6.

Remarks m = 2 or 6

Internal Bus

Output Latch

PM2/

PM60 to

63

Input Buffer

POGA

Bit m

POm

PMm = 0

PMm = 1

P-ch

Pull-up

Resistors

DD

P m 0

P m 1

P m 2

P m 3

Output

Buffer

PMGB Bit 2,

PMGA bits

4 to 7

M

P

X

*

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 194 195

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NEC PD75P402 Manual do Utilizador Página 56