UPD16314 View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

View to exact match

UPD16314

MOS INTEGRATED CIRCUIT DOT CHARACTER VFD CONTROLLER/DRIVER

NEC => Renesas Technology 

µ PD16314

3.3 Logic System (Other Logic)

Pin Symbol

OSCIN

OSCOUT

XOUT

DS0

DS1

Pin Name

Oscillator pin

Oscillator output

Duty selector

IM

Interface select

Pin No. I/O Output

6





5

4

CMOS

11

I



10

24

I



MPU

Interface select

25

I



DLS

Display line select

9

I

R,L1

R,L2

TEST

Anode output select

Test pin

27

I



28

8

I



TESTOUT

Test pin

33

O



Note N: Display line selection flag for function setting command.

Description

The resister for determining the oscillation frequency

is externally attached to this pin.

Oscillator signal output pin.

Sets the duty ratio. The duty ratio is determined by

the number of grids. The relationship between the

duty ratio and these pins is shown in 4 DUTY

RATIO SETTING.

Selects the interface mode: Serial transfer or parallel

transfer.

L: Selects serial data transfer

H: Selects parallel data transfer

(In Parallel data transfer mode, the word length

differs depending on the instruction.)

Selects the interface mode: i80-type CPU mode or

M68-type CPU mode.

L: Selects i80-type CPU mode.

H: Selects M68-type CPU mode.

Selects the number of display lines at power ON

reset or reset.

L: Selects 1 line (N Note = 0)

H: Selects 2 lines (N Note = 1)

Sets the anode outputs. The Ox pins are set by

these pins.

The relationship between Ox and Ax (anode) is

shown in 5 ANODE SETTING.

A pin for testing the IC.

L or open: Normal operation mode

H: Test mode

A pin for testing the IC. Leave this pin open.

3.4 Logic System (External Extension Driver)

Pin Symbol

Pin Name

Pin No. I/O

SDO

Serial data output

31

O

SLK

Serial clock output

32

O

/CL

Clear signal

29

O

LE

Latch enable

30

O

Output

CMOS

CMOS

CMOS

CMOS

Description

Serial data output for extension grid driver.

Shift clock pulse for extension grid driver.

Clear signal for extension grid driver.

The signal is active low. The grid data stored in the

latch of the extension driver is output when this

signal is H. If this signal is L, the extension driver

outputs L.

Latch enable signal for extension grid driver.

6

Data Sheet S13231EJ1V0DS00

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