SN8P1829
8-Bit MCU build-in 12-bit ADC + PGIA + Charge-pump Reg 128 dots LCD driver
SONiX TECHNOLOGY CO., LTD
Page 105
Version 1.0
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I/O PORT
OVERVIEW
The SN8P1829 provides up to four ports for users’ application, consisting of two input only ports (P0, P2), two I/O ports
(P1, P5). The direction of I/O port is selected by P
N
M register.
Figure 11-1. The I/O Port Block Diagram
Note: All of the latch output circuits are push-pull structures.
Port0 structure
PUR
P0UR
Pin
Int. bus
PUR
P2UR
Pin
Port2 structure
Int. bus
LCD wave form
P2SEG
PUR
P2UR
Pin
Port2 structure
Int. bus
LCD wave form
P2SEG
PUR
PnM, PnUR
Pin
Int. bus
PnM
Latch
Port1, 5 structure
PnM
PUR
PnM, PnUR
Pin
Int. bus
PnM
Latch
Port1, 5 structure
PnM