PT8A973 Datasheet, PDF (1/13 Pages) Pericom Semiconductor Corporation – 7-Function Remote Controller

Data Sheet
PT8A9701/973/973L
7-Function Remote Controller
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Features
• The PT8A9701 works as the encoder and the
PT8A973/973L works as the decoder
• Seven output pins, 5 for forward, backward, left,
right and turbo functions, and 2 functional keys
• Operation power supply for PT8A9701: 3V to 12V
(with series resistor)
• Auto power-off if no key pressed (PT8A9701)
• Motor current limit to meet toy safety standard
HD271 (PT8A973/973L)
• Low operating current
• On-chip oscillator with an external resistor
• On-chip reversing amplifiers
• Built-in 3.7V Zener (Vz) (PT8A973) and 3.1V
Zener (Vz) (PT8A973L)
• Few external components needed
• Pin to pin compatible with TX6/RX6
General Description
The PT8A9701 and PT8A973/973L is a pair of
CMOS LSIs designed for remote controlled toy car
application. They have seven control keys for
controlling the corresponding motion (forward,
backward, left, right, turbo and 2 functional keys) of
the remote controlled car. They also have ‘Forward
(Backward)’ and ‘Turbo’ combination application.
Ordering Information
Device Name
Encoder
Part No.
PT8A9701P
Package
16-pin PDIP
Decoder
PT8A973P
PT8A973LP
PT8A973DE
PT8A973LDE
18-pin PDIP
Die Form
Block Diagram
Figure 1. Block Diagram of PT8A9701
f₀/2
OSCI
OSCO
Oscillator ^f0
Timing
Generator
MUX
SC
SO
Forward
Backward
Left
Right
Turbo
F1
F2
F3/F4
Latch
Circuit
Logic
Control
V_CC
PC
Counters
PT0089(09/02)
1
Ver:2