SN8P1602A datasheet(12/76 Pages) SONIX

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SN8P1602B

8-Bit Micro-Controller

SONiX TECHNOLOGY CO., LTD

Page 12

Version 1.1

PIN DESCRIPTIONS

SN8P1602B

PAD NAME

TYPE

DESCRIPTION

VDD, VSS

Power supply input pins. Place the 0.1µF bypass capacitor between the VDD and VSS pin.

RST/VPP

I, P

RST: System reset input pin. Schmitt trigger structure, low active, normal stay to

“high”.

VPP: OTP programming pin.

XIN

External oscillator input pin. RC mode input pin.

XOUT/P1.4

I/O

External oscillator output pin. In RC mode is P1.4 I/O.

P0.0 / INT0

Port 0.0 and shared with INT0 trigger pin (Schmitt trigger) / Built-in pull-up resistors.

P1.0 ~ P1.4

I/O

Port 1.0~Port 1.4 bi-direction pins / Built-in pull-up resistors.

P2.0 ~ P2.7

I/O

Port 2.0~Port 2.7 bi-direction pins / Built-in pull-up resistors.

PIN CIRCUIT DIAGRAMS

SN8P1602B

Note: All of the latch output circuits are push-pull structures.

Port0 structure

PUR

PnM, PUR

PnM

Latch

Port1~Port2 structure

PnM

Int. bus

Port0 structure

PUR

PnM, PUR

PnM

Latch

Port1~Port2 structure

PnM

Int. bus

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