PT8A9701P Datasheet | Pericom Semiconductor

Features - The PT8A9701P works as the encoder and the PT8A974P/974LP works as the decoder - Nine output pins, 5 for forward, backward, left, right and turbo functions, and 3 functional keys - Operation power supply for PT8A9701: 3V to 12V (with series resistor) - Auto power-off if no key pressed (PT8A9701P) - Motor current limit to meet toy safety standard HD271 (PT8A974P/974LP) - Low operating current - On-chip oscillator with an external resistor - On-chip reversing amplifiers - Built-in 3.7V Zener (Vz) (PT8A974P) and 3.1V Zener (Vz) (PT8A974LP) - Few external ponents needed General Description The PT8A9701P and PT8A974P/974LP is a pair of CMOS LSIs designed for remote controlled toy car application. They have eight control keys for controlling the corresponding motion, i.e., forward, backward, left, right, turbo and 3 functional keys, of the remote controlled car. They also have ‘Forward (Backward)’ and ‘Turbo’ bination application. Ordering Information Device Na m e Part No. Package E n cod er PT8A9701P 16-pin PDIP Decod er PT8A974P PT8A974LP 20-pin PDIP Block Diagram Figure 1. Block Diagram of PT8A9701P f0/2 OSCI OSCO Oscillator Timing Generator Forward Backward Left Right Turbo F1 F2 F3/F4 Latch Circuit Logic Control Counters PT0090(09/02) Ver:2 .. ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Data Sheet PT8A9701P/974P/974LP 8-Function Remote Controller Figure 2. Block Diagram of PT8A974P/974LP OSCI OSCO SI Oscillator Timing Generator Decoding Circuit Counter Amp...