SN8P2604A
8-Bit Micro-Controller
1.4 PIN DESCRIPTIONS
PIN NAME
VDD, VSS
TYPE
P
DESCRIPTION
Power supply input pins for digital circuit.
P0.2: Input only pin (Schmitt trigger) if disable external reset function.
P0.2 without build-in pull-up resister
P0.2 is input only pin without pull-up resistor under P0.2 mode. Add the 100 ohm
external resistor on P0.2, when it is set to be input pin.
RST: System reset input pin. Schmitt trigger structure, low active, normal stay to “high”.
VPP: OTP programming pin.
P0.2/RST/VPP
I, P
XIN
I
Oscillator input pin while external oscillator enable (crystal and RC).
XOUT: Oscillator output pin while external crystal enable.
Fcpu: Signal output pin while external RC mode enable.
Port 0.0 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
INT0 trigger pin (Schmitt trigger).
Port 0.1 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
INT1 trigger pin (Schmitt trigger).
TC1 event counter clock input pin.
Port 1.0, P1.1 bi-direction pin and open-drain pin. Schmitt trigger structure as input
mode.
XOUT/Fcpu
I/O
P0.0/INT0
P0.1/INT1
P1.0~P1.1
I/O
I/O
I/O
Built-in pull-up resisters.
Port 1.2~P1.7 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
Bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
Port 5 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
P1.2~P1.7
P2.0~P2.7
I/O
I/O
I/O
P5.0~P5.2, P5.4
Port 5.3 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
P5.3/BZ1/PWM1
I/O
TC1 ÷ 2 signal output pin for buzzer or PWM1 output pin.
SONiX TECHNOLOGY CO., LTD
Page 11
Version 0.3
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