PT8A973L Datasheet | Pericom Semiconductor

Data Sheet PT8A9702/973/973L/974/974L 8-Direction Remote Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features - The PT8A9702 works as the encoder and the PT8A973/974/973L/974L works as the decoder - 8-direction control - Operation power supply for PT8A9702: 3V to 12V (with series resistor) - Auto power-off if no key pressed (PT8A9702) - Motor current limit to meet toy safety standard HD271 (PT8A973/974/973L/974L) - Low operating current - On-chip oscillator with an external resistor - On-chip reversing amplifiers - Built-in 3.8V Zener (9702), 3.7V Zener (Vz) (973/974) and 3.1V Zener (Vz) (973L/974L) - Few external ponents needed - Pin to pin patible with TX6/RX6 General Description The PT8A9702P works as encoder, it can provide 8direction remote control for toy car application with PT8A973/973L/PT8A974/974L together. Input 8direction named F, FL, L, BL, BR, R, FR, and B they are bined with F, L, B, and R four signals. In decoder side, use output signal Left & Right to drive Right Motor, and use For & Back to drive Left Motor. Their detail relations please see truth table. Ordering Information Device Na me Part No. Package E n cod er PT8A9702P 16-pin PDIP PT8A973P PT8A973LP Decod er PT8A974P PT8A974LP 20-pin PDIP 18-pin PDIP Block Diagram Block Diagram of PT8A9702 f0/2 OSCI OSCO f0 Oscillator Timing Generator SC MUX SO m o c . u 4 t e e h s a t a .d w w w Forward Backward Left Right F1 F2 F3/F4 PT0097(11/02) Latch Circuit Logic Control...