LC866448B/44B/40B/36B/32B/28B/24B/20B/16B/12B/08B

No.6699-8/21

Pin name

I/O

Function description

Option

PORT8

P80 to 87

I

•8-bit input port

•Other function

AD input port (8 Port pins)

-

S0/T0 to

S6/T6

O

Output for VFD display controller

segment/timing in common

Pull-down resistor :

Provided/Not provided (each nibble)

S7/T7 to

S15/T15

O

•Output for VFD display controller

segment/timing with internal pull-down resistor in

common

•Internal pull-down resistor output

S16 to S31

I/O

•Output for VFD display controller segment

•Other function

S16 : High voltage input port PC0

S17 : High voltage input port PC1

S18 : High voltage input port PC2

S19 : High voltage input port PC3

S20 : High voltage input port PC4

S21 : High voltage input port PC5

S22 : High voltage input port PC6

S23 : High voltage input port PC7

S24 : High voltage input port PD0

S25 : High voltage input port PD1

S26 : High voltage input port PD2

S27 : High voltage input port PD3

S28 : High voltage input port PD4

S29 : High voltage input port PD5

S30 : High voltage input port PD6

S31 : High voltage input port PD7

Pull-down resistor :

Provided/Not provided (each nibble)

S32 to S37

I/O

•Output for VFD display controller Segment

•Other function

S32 : High voltage I/O port PE0

S33 : High voltage I/O port PE1

S34 : High voltage I/O port PE2

S35 : High voltage I/O port PE3

S36 : High voltage I/O port PE4

S37 : High voltage I/O port PE5

Pull-down resistor :

Provided/Not provided (each nibble)

RES

I

Reset pin

-

XT1/ P74

I

•Input pin for 32.768kHz crystal oscillation

•Other function

P74 for input port

•In case of non use, connect to VDD1.

-

XT2/P75

O

•Output pin for 32.768kHz crystal oscillation

•Other function

P75 for input port

•In case of non use,

At using as oscillator, should be left opened.

At using as a port, connect to VDD1.

-

CF1

I

Input pin for the ceramic resonator oscillation

-

CF2

O

Output pin for the ceramic resonator oscillation

-

*

All of port options (except pull-up resistor of port 0) can be specified in bit unit.