PT8A977W Datasheet | Pericom Semiconductor

.. Data Sheet PT8A977P/977W/978P/978LW 5-Function Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features - PT8A977P/977W works as encoder and PT8A978P/978LW works as decoder - Five pins for five control functions - Operating power-supply voltage: 2.5V to 5.0V (977P, 977W, 978P), 2.0V to 5.0V (978LW) - Auto-power-off if no press on any button in 8s or continuously press on any button over 4 minues - Press on any button as wake up (977P, 977W) - Manual-power-off with OFF button - One output pin used for external power control (977P, 977W) - On-chip oscillator with an external resistor - On-chip reversing amplifiers (978P, 978LW) - Low operating current - Few external ponents needed - Package: 14-pin DIP, 14-pin SOIC, 16-pin DIP and 16-pin SOIC General Description The PTA977P (or 977W) and PT8A978P (or 978LW) provide a plete control functions to the remotecontrolled toy. The PT8A977P/977W has five input pins corresponding with the five function buttons i.e, forward, backward, rightward, leftward and turbo. The encoding circuit in the PT8A977P/977W sends digital codes to the two output pins SO and SC. The digital codes correspond to the definite function buttons or their binations. The SO and SC outputs are used in wireless and infra-red applications respectively. The PT8A978P (or 978LW) 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 Data Shee actions of the remote-controlled toy. There is an internal oscillator in the PT8A977P/977W Ordering Information Pa r t No. PT8A977P PT8A977W PT8A978P PT8A978LW Pa ck a ge...