SC73P1601

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

REV:1.4

2009.08.03

Http: www.silan.com.cn

Page 4 of 22

PIN DESCRIPTIONS

Normal mode

Symbol

Description

Power Supply (2.0V~4.0V)

GND

Ground

XT1

Oscillator output pin

XT2

Oscillator input pin

P00~P03

4-bit I/O pin.

In input mode, it is used as the keyboard-scan input port (with internal pull-down resistor).

In output mode, it is used as the keyboard-scan output port.

P10~P13

4-bit I/O pin.

In input mode, it is used as the keyboard-scan input port (with internal pull-down resistor).

In output mode, it is used as the keyboard-scan output port.

P20~P23

4-bit I/O pin.

In input mode, it is used as the keyboard-scan input port (with internal pull-down resistor).

In output mode, it is used as the keyboard-scan output port.

P50

1-bit input pin with pull-down resistor, used for keyboard-scan input.

P51

1-bit I/O pin.

In input mode, it is used as the keyboard-scan input port (with internal pull-down resistor).

In output mode, it is used as the keyboard-scan output port.

P52

1-bit I/O pin.

In input mode, it is used as the keyboard-scan input port (with internal pull-down resistor).

In output mode, it is used as the keyboard-scan output port,

P53

Outputs remote control signal with carrier or without carrier.

Programming mode:

Symbol

Description

D0-D8

9-bit data when EPROM write in/ verify

Otp_clk

Address increment clock when EPROM write in/ verify

Ceb

EPROM program enable, and high active

Oeb

EPROM output enable, and high active

Progb

EPROM program enable, and high active

Power supply of +6.5 V

GND

Ground

Vpp

In program mode, provide 12.5V to this pin

Otp_res

Clear eprom address pointer, and high active