LC86P6449

No.6689-9/22

Pin name

I/O

Function description

Option

PROM mode

CF1

I

Input pin for the ceramic resonator oscillation

-

-

CF2

O

Output pin for the ceramic resonator oscillation

-

-

♦ 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

Connect like the following figure to reduce noise into a VDD1 terminal.

*5

TA ! PROM control signal input

*6

S0/T0 to S6/T6 : not provided the pull-down resistor

*7

S7/T7 to S15/T15 : provided the pull-down resistor (fixed)

*8

S16 to S27 : provided the pull-down resistor (fixed)

*9

S28 to S31 : not provided the pull-down resistor

*10 S32 to S37 : not provided the pull-down resistor

[Notes]

When connecting to the power supply, the power pins must be connected like following figure.

For the LC866448B/44B/40B/36B

For the LC866432A/28A/24A/20A/16A/12A/08A

Power

Supply

VDD1

VDD2

(VFD power pin)

VSS1

VSS2

LSI

For back-up

Power

Supply

VDD1

VDD2

(VFD power pin)

VSS1

VSS2

LSI

For back-up