LC86P5420

No.6730-9/22

Pin name I / O

Function description

Option

PROM mode

PORT8

P80 - P83

I

•4-bit input port

TA (*4)

P84 - P87 I / O •4-bit input / output port

Input / output can be specified in

bit unit

•Other function

AD input port (AN7 to AN0)

RES

I

Reset pin

XT1 / P74

I

•Input pin for the 32.768kHz cyrstal

oscillation

•Other function

XT1 : Input port P74

In case of non use, connect to VDD

XT2 / P75

O

•Output pin for the 32.768kHz

crystal oscillation

•Other function

XT2 : Input port P75

In case of non use, connect to VDD

at using as port or unconnect at using

as oscillation.

CF1

I

Input pin for the ceramic resonator

oscillation

CF2

O

Output pin for the ceramic resonator

oscillation

s All of port options except the pull-up resistor option of Port 0 can be specified in a bit unit.

*1

Memory select input for data security

*2

Output enable input

*3

Chip enable input

*4

TA---> PROM control signal input