NEC PD750008 - Manual (Page 89)

69
CHAPTER 5 PERIPHERAL HARDWARE FUNCTIONS
Figure 5-2. Configurations of Ports 0 and 1
Internal bus
8 CSIM
Selector Selector
P01
output
latch
Internal
SCK
SI SCK SO INT4
V DD
Pull-up
resistor
P-ch
P00/INT4
P01/SCK
P02/SO/SB0
P03/SI/SB1
Bit 0 of
POGA
Input buffer Output buffer which can
be switched to either
push-pull output or N-ch
open-drain output
Pull-up
resistor
V
DD
P-ch
P10/INT0
P11/INT1
P12/INT2
P13/ TI0
Bit 1 of
POGA
Input buffer
Φ
or f X /64
Input buffer with hysteresis
TI0 INT2 INT1 INT0
Noise
eliminator
Selector
N-ch
open drain