HT6523
Features
- patible with IBM PS/2 mouse
- Integrated oscillator circuit with external resistor
- 6MHz clock frequency
- Minimal external ponents
- Three key-switches and four photo-coupler inputs
- Supports test mode operation
- 16-pin DIP package
General Description
The HT6523 is a PS/2 patible mouse controller IC. Capable of driving up to 3 key-switches and 4 photo-couplers directly into a 6-pin connector line.
Pin Assignment
N C 1 2 3 4 5 6 7 8 T E S T R E S E T O S C N C C L K D A T A V S S 1 6 1 5 1 4 1 3 1 2 1 1 1 0 9 V D D Y 2 Y 1 X 2 X 1 L B M B R B
H T 6 5 2 3 1 6 D IP -A
Pin Description
Pin No. 1, 5 2 3 4 6 7 8 9 10 11 12 13 14 15 16 Pin Name NC TEST RESET OSC CLK DATA VSS RB MB LB X1 X2 Y1 Y2 VDD I/O ¾ I I I I/O I/O ¾ No connection If TEST is floating or connected to VSS, then the chip is under normal operation. If TEST is connected to VDD, it will operate under the TEST mode. Input to reset internal LSI OSC is connected to an external resistor then to VDD to generate a...
