Sanyo LC75754M Specifications

Ordering number : EN5950

101698RM (OT) No. 5950-1/10

LC75754M

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

1/3 Duty VFD Driver

CMOS IC

Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.

Overview

The LC75754M is a 1/3 duty VFD driver that can be used
for electronic tuning frequency display and other
applications under the control of a microcontroller. This
product can directly drive VFDs with up to 72 segments.

Features

• 72 segment outputs.

• Noise reduction circuits are built into the output drivers.

• Serial data input supports CCB format communication
with the system controller.

• Dimmer can be controlled by serial data input.

• High generality since display data is displayed without
the intervention of a decoder.

• All segments can be turned off with the BLK pin.

Package Dimensions

unit: mm

3129-MFP36S

SANYO: MFP36S

[LC75754M]

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage

V

DD

max V

DD

–0.3 to +6.5 V

V

FL

max V

FL

–0.3 to +21.0 V

Input voltage

V

IN

1 DI, CL, CE, BLK –0.3 to +6.5 V

V

IN

2 OSCI –0.3 to VDD+0.3 V

Output voltage

V

OUT

1 S1 to S24, G1 to G3 –0.3 to VFL+0.3 V

V

OUT

2 OSCO –0.3 to VDD+0.3 V

Output current

I

OUT

1 S1 to S24 6 mA

I

OUT

2 G1 to G3 60 mA
Allowable power dissipation Pd max Ta = 85°C 300 mW
Operating temperature Topr –40 to +85 °C
Storage temperature Tstg –50 to +150 °C

Specifications

Absolute Maximum Ratings at Ta = 25°C, VSS= 0V

• CCB is a trademark of SANYO ELECTRIC CO., LTD.

• CCB is SANYO’s original bus format and all the bus
addresses are controlled by SANYO.

No. 5950-2/10

LC75754M

Allowable Operating Ranges at Ta = –40 to +85°C, VDD= 4.5 to 5.5V, VSS= 0V

Parameter Symbol Conditions

Ratings

Unit

min typ max

Supply voltage

V

DDVDD

4.5 5.0 5.5 V

V

FL

V

FL

8 12 18 V

Input high-level voltage

V

IH

1 DI, CL, CE, BLK 0.8 V

DD

5.5 V

V

IH

2 OSCI 0.8 V

DD

V

DD

V

Input low-level voltage V

IL

DI, CL, CE, BLK, OSCI 0 0.2 V

DD

V

Guaranteed oscillator range f

OSC

OSCI, OSCO 0.9 2.4 3.7 MHz

Recommended external resistance R

OSC

OSCI, OSCO 2.2 12 47 KΩ

Recommended external capacitance C

OSC

OSCI, OSCO 15 33 100 pF

Low level clock pulse width t

øL

CL : Figure 1 160 ns

High level clock pulse width t

øH

CL : Figure 1 160 ns

Data setup time t

ds

DI, CL : Figure 1 160 ns

Data hold time t

dh

DI, CL : Figure 1 160 ns

CE wait time t

cp

CE, CL : Figure 1 160 ns

CE setup time t

cs

CE, CL : Figure 1 160 ns

CE hold time t

ch

CE, CL : Figure 1 160 ns

BLK switching time t

c

BLK, CE : Figure 3 10 µs

Electrical Characteristics in the Allowable Operating Ranges

• When CL is stopped at the low level

Parameter Symbol Conditions

Ratings

Unit

min typ max

Input high-level current

I

IH

1 DI, CL, CE, BLK : VIN= 5.5V 5 µA

I

IH

2 OSCI : VIN= V

DD

5 µA

Input low-level current I

IL

DI, CL, CE, BLK, OSCI : VIN= 0 V –5 µA

V

OH

1 S1 to S24 : IO= –2 mA VFL– 0.6 V

Output high-level voltage V

OH

2 G1 to G3 : IO= –50 mA VFL– 1.3 V

V

OH

3 OSCO : IO= –0.5 mA VDD– 2.0 V

Output low-level voltage

V

OL

1 S1 to S24, G1 to G3 : IO= 50 µA 0.5 V

V

OL

2 OSCO : IO= 0.5 mA 2.0 V

Oscillator frequency f

OSCROSC

= 12kΩ, C

OSC

= 33 pF 2.4 MHz

Hysteresis voltage V

H

DI, CL, CE, BLK 0.1 V

DD

V

Current drain I

DD

Output open : f

OSC

= 2.4MHz 10 mA

• When CL is stopped at the high level

Figure 1

No. 5950-3/10

LC75754M

Pin Assignment

Block Diagram

Pin Functions

Pin No. Pin Function I/O Handling when unused

4 V

FL

Driver block power supply. A voltage of between 8.0 and 18.0 V must be supplied. — —

32 V

DD

Logic block power supply. A voltage of between 4.5 and 5.5 V must be supplied. — —

29 V

SS

Power supply. Must be connected to the system ground. — —
31 OSCI Oscillator connection. An oscillator circuit is formed by connecting an external resistor and I GND
30 OSCO capacitor to these pins. O OPEN

Display off control input.
33 BLK

BLK = L (V

SS

) ...........Display off (S1 to S24, G1 to G3 = L)

I GND

BLK = H (V

DD

) ..........Display on

Note that serial data can be transferred while the display is turned off.
35 CL

Serial data transfer inputs. These pins must be connected to the system microcontroller.
36 DI

CL : Synchronization clock DI : Transfer data CE : Chip enable

I GND

34 CE

1 to 3 G1 to G3 Digit outputs. The frame frequency fo is (f

OSC

/6144)Hz. O OPEN

28 to 5 S1 to S24 Segment outputs for displaying the display data transferred by serial data input O OPEN