PT8A977B Datasheet, PDF (1/11 Pages) Pericom Semiconductor Corporation – PT8A977B/9781 5-Function Remote Controller for 1V Micro Cars

Data Sheet
PT8A977B/9781 5-Function Remote
Controller for 1V Micro Cars
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Features
General Description
• PT8A977B works as encoder and PT8A9781
works as decoder
• Four control functions
• Operating power-supply voltage: 1.8V to 5.0V(977B)
1.0V to 1.5V (9781)
• Auto-power-off and oscillation-off if no press on
any button (977B)
• Press on any button to wake up (977B)
• On-chip oscillator with an external resistor (977B)
• On-chip oscillator with an external resistor and
capacitor (9781)
• On-chip amplifiers (9781)
• Low operating current
• Few external components needed
Ordering Information
Part No.
PT8A977BP
PT8A977BW
PT8A977BDE
PT8A9781W
PT8A9781DE
Package
14-pin DIP
14-pin SOIC
Die Form
16-pin SOIC
Die Form
The PT8A977B and PT8A9781 provide a complete
control functions to the remote-controlled toy. The
PT8A9781 has four output pins corresponding with
the four actions i.e, forward, backward, right, left.
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 remote-controlled toy.
There is an internal oscillator in the PT8A9781. By
adding an external resistor and capacitor conveniently,
the oscillator will be constructed. The external resistor
and capacitor can adjust the oscillator frequency. The
relative error between the frequencies of the two on-
chip oscillators in the PT8A977B and PT8A9781 must
be less than ±25%.
PT0118(02/04)
1
Ver:3