UNISONIC TECHNOLOGIES CO., LTD

RCT02

CMOS IC

www.unisonic.com.tw

1 of 11

Copyright © 2013 Unisonic Technologies Co., Ltd.

QW-R502-002. D

ENCODER FOR REMOTE

CONTROLLER WITH FIVE

FUNCTIONS



DESCRIPTION

The chip can be used with the decoder UTC RCR02 to provide a

complete control functions to the remote-controlled toy. The UTC

RCT02

has five input pins corresponding with the five function

buttons i.e, forward, backward, rightward, leftward and turbo. The

encoding circuit in the UTC RCT02 sends digital codes to the two

output pins SO and SC. The digital codes correspond to the definite

function buttons or their combinations. The SO and SC outputs are

used in wireless and infra-red applications respectively.

DIP-14

SOP-14

There is an internal oscillator in the UTC RCT02. By adding an external resistor conveniently, the oscillator will be

constructed. The oscillator frequency can be adjusted by the external resistor. The relative error between the

frequencies of the two on chip oscillators in the UTC RCT02 and UTC RCR02 must be less than ±25%.

The auto-power-off function is achieved by an internal counter. When the UTC RCT02 is powered on, the counter

is reset and begin to count. Any action of push down or release the function button also reset the counter. The PC

pin will keep on a high level until the counter counts up to about 4 minutes. The PC output is used to control on/off

state of the external power supply. Pressing OFF button can also shut down the power supply. Press on any function

button will wake up the chip promptly.



FEATURES

*Five input pins used for five control buttons

*Operating power-supply voltage range: 2.5 ~ 5.0V

*Auto-power-off if no press on any button in 4 minutes or

continuously press on any button over 4 minutes

*Manual-power-on/off with ON/OFF button

*One output pin used for external power control

*Press on any button as wake up

*On-chip oscillator with an external resistor

*Low operating current

*Few external components needed



ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

RCT02L-D14-T

RCT02G-D14-T

DIP-14

Tube

RCT02L-S14-T

RCT02G-S14-T

SOP-14

Tube

RCT02L-S14-R

RCT02G-S14-R

SOP-14

Tape Reel