SN8P2711A
8-Bit Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 11
Version 0.1
1.4 PIN
DESCRIPTIONS
PIN NAME
TYPE
DESCRIPTION
VDD, VSS
P
Power supply input pins for digital circuit.
P0.4/RST/VPP I,
P
P0.4: Input only pin (Schmitt trigger) if disable external reset function.
P0.4 without build-in pull-up resister.
P0.4 is input only pin without pull-up resistor under P0.4 mode. Add the 100
ohm external resistor on P0.4, when it is set to be input pin.
Built-in wakeup function.
RST: System reset input pin. Schmitt trigger structure, low active, normal stay to
“high”.
VPP: OTP programming pin.
P0.3/XIN I/O
Port 0.3 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
Built-in wakeup function.
Oscillator input pin while external oscillator enable (crystal and RC).
P0.2/XOUT I/O
Port 0.2 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
Built-in wakeup function.
XOUT: Oscillator output pin while external crystal enable.
P0.0/INT0 I/O
Port 0.0 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
Built-in wakeup function.
INT0 trigger pin (Schmitt trigger).
TC0 event counter clock input pin.
P0.1/INT1 I/O
Port 0.1 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
Built-in wakeup function.
INT1 trigger pin (Schmitt trigger).
TC1 event counter clock input pin.
P4.0/AIN0/VREFH I/O
Port 4.0 bi-direction pin.
No Schmitt trigger structure.
Built-in pull-up resisters.
AIN0: ADC channel-0 input.
VREFH: ADC external high reference voltage input.
P4.[4:1]/AIN[4:1] I/O
Port 4 [4:1] bi-direction pins.
No Schmitt trigger structure.
Built-in pull-up resisters.
AIN[4:1]: ADC channel-1~4 input.
P5.3/BZ1/PWM1 I/O
Port 5.3 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
TC1 ÷ 2 signal output pin for buzzer or PWM1 output pin.
P5.4/BZ0/PWM0 I/O
Port 5.4 bi-direction pin. Schmitt trigger structure as input mode.
Built-in pull-up resisters.
TC0 ÷ 2 signal output pin for buzzer or PWM0 output pin.