Daewoo 21Q1, 21Q2, 14T2, 21Q4, 14Q2, 20Q1, 14Q1, 21T2 PCA84C 122AIC Remocon, PIN Signal Description

PCA84C 122A(IC REMOCON)

(1)Features

•ROM, RAM and I/O is device dependent

•Two test inputs T0, T1

•3 Single-level vectored interrupt sources

•8 bit programmable timer/counter with 5-bit pre-scaler

•Single supply voltage from 2.0V to 5.5V

•On-board oscillator 1MHz to 5MHz

•Operating temperature range -20 to +50 C

(2)General Description

The PCA84C122A is a stand-alone micro controller designed for use in remote control unit for a wide range of applications.

(3) Pin Description

PIN	SIGNAL	DESCRIPTION
3	P00
2	P01
23	P02
		Standard I/O Port lines, generally used for keypad scanning
22	P03
10	P04
11	P05
14	P06
15	P07
19	P10
18	P11
17	P12
16	P13	Standard I/O Port lines, generally used for keypad scanning
1	P14
24	P15
12	P16
13	P17
4	TP/INT	Test T0 and external interrupt input
5	T1	Test T1
6	RESET	Active HIGH reset, normally tied to Vss because internal
		Power-on reset can serve the same function
8	XTAL 1	Crystal or ceramic resonator
9	XTAL 2
21	OUT	Pulse train output pin, capable of sinking 27mA
7	VDD	Power supply
20	Vss	Ground

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