Pericom Semiconductor PT8A977P
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 combinations.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 components 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 complete control functions to the remotecontrolled toy. 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 t...