74923 - 20-key encoder

pinout

1 Y1 20 VCC 2 Y2 19 A 3 Y3 18 B 4 Y4 17 C 5 Y5 16 D 6 OSC 15 E 7 KBM 14 OE 8 X4 13 DA 9 X3 12 X1 10 GND 11 X2 74923 www.nanobob.com

description

KBM : keybounce mask

(connect 10nF capacitor to ground)

OSC : oscillator

(connect 100nF capacitor to ground)

DA : data available

pin types

0 digital input (inverted) 0 digital output (inverted) 0 digital input-output (bidir) 0 analog (input or output) 0 positive power 0 ground 0 negative power