SN8P2200 Series
USB 1.1 Low-Speed 8-Bit Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 13
Version 1.7
1.4
PIN DESCRIPTIONS
PIN NAME
TYPE
DESCRIPTION
VDD, VSS
P
Power supply input pins for digital circuit.
P0.0/INT0 I/O
P0.0: Port 0.0 bi-direction pin.
Schmitt trigger structure and built-in pull-up resisters as input mode.
Built wakeup function.
INT0: External interrupt 0 input pin.
P0.1/T1IN I/O
P0.1: Port 0.1 bi-direction pin.
Schmitt trigger structure and built-in pull-up resisters as input mode.
Built wakeup function.
T1IN: T1 timer capture input pin.
P0.2/T2IN I/O
P0.2: Port 0.1 bi-direction pin.
Schmitt trigger structure and built-in pull-up resisters as input mode.
Built wakeup function.
T2IN: T2 timer capture input pin.
P0[6:3] I/O
P0: Port 0 bi-direction pin.
Schmitt trigger structure and built-in pull-up resisters as input mode.
P1.0 I/O
P1.0: Port 1.0 bi-direction pin.
Schmitt trigger structure and built-in pull-up resisters as input mode.
Open-Drain function controlled by “P1OC” register.
Built wakeup function.
P1.1 I/O
P1.1: Port 1.1 bi-direction pin.
Schmitt trigger structure and built-in pull-up resisters as input mode.
Open-Drain function controlled by “P1OC” register.
Built wakeup function.
P1.2/XOUT I/O
XOUT: Oscillator output pin while external crystal enable.
P1.2: Port 1.2 bi-direction pin under internal 16M RC and external RC.
Schmitt trigger structure and built-in pull-up resisters as input mode.
Built wakeup function.
P1.3/XIN I/O
XIN: Oscillator input pin while external oscillator enable (crystal and RC).
P1.3: Port 1.3 bi-direction pin under internal 16M RC.
Schmitt trigger structure and built-in pull-up resisters as input mode.
P1.4/RST/VPP I,
P
RST is system external reset input pin under Ext_RST mode.
Schmitt trigger structure, active “low”, normal stay to “high”.
P1.4 is input only pin without pull-up resistor under P1.4 mode. Add the 100
ohm external resistor on P1.4, when it is set to be input pin.
Built wakeup function.
OTP 12.3V power input pin in programming mode.
P1[7:5] I/O
P1: Port 1 bi-direction pin.
Schmitt trigger structure and built-in pull-up resisters as input mode.
P5.0 I/O
P5.0: Port 5.0 bi-direction pin.
Schmitt trigger structure and built-in pull-up resisters as input mode.
P5.1 I/O
P5.1: Port 5.1 bi-direction pin.
Schmitt trigger structure and built-in pull-up resisters as input mode.
P5.4/BZ0/PWM0 I/O
P5.4: Port 5.4 bi-direction pin.
Schmitt trigger structure and built-in pull-up resisters as input mode.
BZ0: 1/2 TC0 counter output pin.
PWM0: PWM0 output.
P5[7:2] I/O
P5: Port 5 bi-direction pin.
Schmitt trigger structure and built-in pull-up resisters as input mode.
VREG
O
3.3V voltage output from USB 3.3V regulator.
D+, D-
I/O
USB differential data line.
SCLK, SDATA
I/O
PS/2 clock and data lines.