NEC PD75402A - Manual (Page 55)

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CHAPTER 5. PERIPHERAL HARDWARE FUNCTIONS
Fig. 5-3 Configuration of Port 3
Remarks n = 0 to 3
Input Buffer PM 3 n=0
PM 3 n=1
M
P
X
Output Latch
PM 3 n
PMGA Bit n
Output
Buffer
POGA
Bit 3
PO3 P-ch
Pull-Up
Resistor
V DD
P 3 n
Internal Bus