PT8A978BLWE

PT8A978BLWE Datasheet

PT8A977B/978B/978BL 5-Function Remote Controller

Part	Datasheet
PT8A978BLWE	PT8A978BLWE (pdf)

Related Parts	Information
PT8A977BUWF	PT8A977BUWF
PT8A977BPE	PT8A977BPE
PT8A978BPE	PT8A978BPE
PT8A978BUWF	PT8A978BUWF
PT8A977BDE	PT8A977BDE
PT8A977BWEX	PT8A977BWEX
PT8A977BWE	PT8A977BWE

PDF Datasheet Preview
PT8A977B/978B/978BL 5-Function Remote Controller • PT8A977B works as encoder and PT8A978B/ 978BL works as decoder • Five pins for five control functions • Operating power-supply voltage 2.5V to 5.0V 978B , 2.0V to 5.0V 978BL , 1.8V to 5.0V 977B • Auto-power-off and oscillation-off if no press on any button 977B • Press on any button to wake up 977B • One output pin used for external power control , 16-pin SOIC, die form and wafer form The PT8A977B and PT8A978B or 978BL provide complete control functions to the remote-controlled toy. The PT8A977B has five input pins corresponding with the five function buttons i.e, forward, backward, rightward, leftward and turbo. The encoding circuit in the PT8A977B 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. The PT8A978B or 978BL has five output pins corresponding with the five actions. The received signals are amplified by the three-stage amplifier, and then the appropriate amplified signals are sampled, fault-tolerantly checked and decoded to control the actions of the remotecontrolled toy. Ordering Information Pa ck a ge PT8A977BPE Lead free 14-pin DIP PT8A977BWE PT8A977BDE Lead free and Green 14-pin SOIC Die Form PT8A977BUWF Wafer Form PT8A978BPE Lead free 16-pin DIP PT8A978BLWE Lead free and Green 16-pin SOIC PT8A978BDE Die Form PT8A978BUWF Wafer Form Note: Adding E= Pb-free or Pb-free and Green Adding X suffix=Tape/Reel There is an internal oscillator in the PT8A977B and 978B/ 978BL respectively. 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 PT8A977B and PT8A978B/978BL must be less than The auto-power-off function is achieved by an internal counter 977B . The PC output is used to control on/off state of the external power supply. Press on any function button will wake up the chip promptly. 12-07-0007 PT0085-10 07/06/2012 Block Diagram Block Diagram of 977B OSCI OSCO Right Left Turbo Forward Backward Oscillator Input Circuit PT8A977B/978B/978BL 5-Function Remote Controller Timing Generator Encoding Output Circuit Circuit SC Block Diagram of 978B/978BL OSCI OSCO

PDF Datasheet Preview

PT8A977B/978B/978BL 5-Function Remote Controller
• PT8A977B works as encoder and PT8A978B/ 978BL works as decoder
• Five pins for five control functions
• Operating power-supply voltage 2.5V to 5.0V 978B ,
2.0V to 5.0V 978BL , 1.8V to 5.0V 977B
• Auto-power-off and oscillation-off if no press on
any button 977B
• Press on any button to wake up 977B
• One output pin used for external power control
, 16-pin SOIC, die form and wafer form

The PT8A977B and PT8A978B or 978BL provide complete control functions to the remote-controlled toy. The PT8A977B has five input pins corresponding with the five function buttons i.e, forward, backward, rightward, leftward and turbo. The encoding circuit in the PT8A977B 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.

The PT8A978B or 978BL has five output pins corresponding with the five actions. The received signals are amplified by the three-stage amplifier, and then the appropriate amplified signals are sampled, fault-tolerantly checked and decoded to control the actions of the remotecontrolled toy.
Ordering Information

Pa ck a ge

PT8A977BPE

Lead free 14-pin DIP

PT8A977BWE PT8A977BDE

Lead free and Green 14-pin SOIC

Die Form

PT8A977BUWF

Wafer Form

PT8A978BPE

Lead free 16-pin DIP

PT8A978BLWE

Lead free and Green 16-pin SOIC

PT8A978BDE

Die Form

PT8A978BUWF

Wafer Form

Note:

Adding E= Pb-free or Pb-free and Green

Adding X suffix=Tape/Reel

There is an internal oscillator in the PT8A977B and 978B/ 978BL respectively. 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 PT8A977B and PT8A978B/978BL must be less than

The auto-power-off function is achieved by an internal counter 977B . The PC output is used to control on/off state of the external power supply. Press on any function button will wake up the chip promptly.
12-07-0007

PT0085-10 07/06/2012

Block Diagram

Block Diagram of 977B

OSCI

OSCO

Right Left

Turbo Forward Backward

Oscillator

Input Circuit

PT8A977B/978B/978BL 5-Function Remote Controller

Timing

Generator

Encoding

Output

Circuit

Circuit SC

Block Diagram of 978B/978BL

OSCI OSCO

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Datasheet ID: PT8A978BLWE 510164