RCT02

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. 

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 

规格书RCT02