PT8A978BLWE

PT8A978BLWE Datasheet


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

Part Datasheet
PT8A978BLWE PT8A978BLWE PT8A978BLWE (pdf)
Related Parts Information
PT8A977BUWF PT8A977BUWF PT8A977BUWF
PT8A977BPE PT8A977BPE PT8A977BPE
PT8A978BPE PT8A978BPE PT8A978BPE
PT8A978BUWF PT8A978BUWF PT8A978BUWF
PT8A977BDE PT8A977BDE PT8A977BDE
PT8A977BWEX PT8A977BWEX PT8A977BWEX
PT8A977BWE 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
More datasheets: TARQ335M006 | TARQ104M035 | ASMT-UAB4-PU802 | ASMT-URB4-PU802 | ELSS-405SYGWA/S530-E2 | SEN0134 | PT8A977BUWF | PT8A977BPE | PT8A978BPE | PT8A978BUWF


Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived PT8A978BLWE Datasheet file may be downloaded here without warranties.

Datasheet ID: PT8A978BLWE 510164