Daewoo DTL- 25G6F Service Manual download pdf (Page 34)

(4) Pin Description

PIN SYMBOL DESCRIPTION

1,2,3,4 K0,K1,K2,K3 4 bit input port with built in pull up resistor

5,6,7,8,9,10 D0,D1,D2,D3,D4,D5 10 bit output port which can be set or reset pin

by pin independently.

The output structure is N-channel open drain.

11 REMOUT remote control signal output port which has

high current driving capability

12 OSC 2 oscillator output

13 OSC 1 oscillator input

14 Vdd 2-4V power supply

15 RESET reset signal input which is a low active

16 GND ground

17,18,19,20 R0,R1,R2,R3 4 bit programmable I/O port

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 57 58

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Daewoo DTL- 25G6F Service Manual Page 34