SN8P1602B
8-Bit Micro-Controller
10I/O PORT
OVERVIEW
The SN8P1602B provides 3 ports for users’ application, consisting one input only port (P0) and two I/O ports (P1, P2,).
Each port consists input pull-up resistors. The direction of I/O port can be selected by PnM register. When the system
resets, these ports will then be set as input port without pull up resistors.
The pull-up resistor can be set up by PUR register.
ꢀ
SN8P1602B
Port1~Port2 structure
Port0 structure
PUR
PUR
PnM
PnM, PUR
PUR
Pin
Int. bus
Pin
Latch
PnM
ꢀ
.
Note: All of the latch output circuits are push-pull structures.
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