Sanyo LC74711 Specifications

Ordering number : ENN*4245A

D2599TH (OT)/12993JN No. 4245-1/16

Preliminary

LC74711

SANYO Electric Co.,Ltd. Semiconductor Company

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

Controller LSI for On-screen Displays

CMOS LSI

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 LC74711 is a CMOS LSI for applications involving microcomputer control of on-screen character and graphics displays. Built-in character ROM supplies 128 alphanumerics and each character is generated in a 12 by 18 pixel format. The display is capable of supporting a maximum of 288 characters within a 24 characters by 12 line array.

Functions and Applications

(1) Screen construction:

24 characters X 12 lines

(2) Number of characters displayed:

Maximum 288 characters capacity

(3) Display control ROM (line ROM):

64 lines (line unit control: 24 character construction)

(4) Display RAM:

176 characters (supporting extended character selection)

(5) Character construction: 12 (horizontal) X 18

(vertical) pixels (6) Character set: 128 types of characters (7) Character size:

4 horizontal types and 4 vertical types (8) Display starting position: 64 types horizontally and

64 types vertically (9) Blinking: Character units (10) Blinking types: 2 types with approximate 1.0 s and

0.5 s cycles and 3-type selection for 25%, 50% and

75% duty (11) Blanking: Font complete blanking (12

X 18 pixels)

(12) Background color: 8 background tints (during

internal synchronizing operation: 4 fsc when using

crystal oscillator) (13) External control input: Serial data input (14) Synchronizing signal: Internal synchronizing,

supports external synchronizing changeover (15) Built-in synchronizing separator circuit (16) Video output: NTSC system composite video

output (17) Superimpose: Characters superimposed over

composite video output (18) Package: DIP-22S

21.2

0.95 0.48

1.71.78

3.9max

0.51min

6.4

7.62

3.3

3.25

0.25

111

22 12

SANYO: DIP22S

[LC74711]

Package Dimensions

unit : mm

3059-DIP22S

LC74711

No. 4245-2/16

Specifications

Absolute Maximum Ratings

Item Symbol Conditions/Pins Ratings Unit

Maximum supply voltage V

max V

DD1

, V

DD2

VSS–0.3 to VSS+7.0 V

Maximum input voltage V

max All input pins VSS–0.3 to VDD+0.3 V

Maximum output voltage V

OUT

max VSS–0.3 to VDD+0.3 V Allowable power dissipation Pd max Ta = 25°C 300 mW Operating temperature Topr –30 to +70 °C Storage temperature Tstg –40 to +125 °C

Allowable Operating Ranges at Ta = –30 to +70°C

Item Symbol Conditions/Pins

Ratings

Unit

min typ max

Supply voltage

DD1

pin 4.5 5.0 5.5 V

DD2

pin 4.5 5.0 1.27V

DD1

Input “H” level voltage V

CS, SIN, RST, SCLK, SEPIN pin 0.8V

DD1

+0.3 V

Input “L” level voltage V

CS, SIN, RST, SCLK, SEPIN pin VSS–0.3 0.2V

DD1

Composite video input voltage

IN1

CVINpin 2V

P-P

IN2

SYNI pin 2V

P-P

2.5V

P-P

Oscillation frequency

OSC1

Xtal oscillation pin (2 fsc) 7.159 MHz

OSC2

Xtal oscillation pin (4 fsc) 14.318 MHz

OSC3

LC oscillation pin (when using LC oscillation)

5 7 10 MHz

Electrical Characteristics at Ta = –30 to +70 °C, default of V

DD1

= 5 V

Item Symbol Pins Conditions

Ratings

Unit

min typ max

Output off leak current I

leak

CV OUT pin 10 µA

Output “H” level voltage V

OH1

SEP OUT pin V

DD1

= 4.5V, IOH= –1.0mA 3.5 V

Output “L” level voltage V

OL1

SEP OUT pin V

DD1

= 4.5V, IOL= 1.0mA 1.0 V

Input current

VIN= V

DD1

1 µA

OSCIN pin VIN= V

–1 µA

DD1

All output are OPEN

10 mA

Xtal = 14.318MHz, LC = 7MHz

DD2

pin V

DD2

= 5.0V 15 mA

Timing Characteristics at Ta = –30 to +70°C, V

DD1

= 5 ±0.5 V

Item Symbol Conditions/Pins

Ratings

Unit

min typ max

Input minimum pulse width

(SCLK) SCLK pin 200 ns

(CS) CS pin (with CS set to “H” period) 1 µs

Data setup time

(CS) CS pin 200 ns

(SIN) SIN pin 200 ns

Data hold time

(CS) CS pin 2 µs

(SIN) SIN pin 200 ns

Single word and write time

word

16-bit write time 10 µs

RAM data write time 1 µs

Current consumption during operation

CS, SIN, RST, SCLK, SEPIN pin

LC74711

No. 4245-3/16

Serial Data Input Timing

Pin Assignment

LC74711

No. 4245-4/16

Pin Functions

Pin No. Pin Symbol Pin name Functions

1 V

SS1

Ground pin Pin for connecting to ground (GND) (grounding pin for digital system).

2 Xtal IN

Xtal oscillation pin

Pin for connecting to capacitor or crystal of crystal oscillator for internal

3 Xtal OUT

synchronizing signal oscillation applications.

4 TEST Test output pin Pin for test data output. 5 RST Reset input pin Pin for system reset input (hysteresis input). 6 SCLK Clock input pin Pin for clock input using serial data input (hysteresis input). 7 SIN Data input pin Pin for serial data input (hysteresis input). Input in 16-bit units.

8 CS Enable input pin

Pin for enable input for serial data processing (hysteresis input). “L” serial data input switches to enable.

9 LVBK

Blanking level adjustment input pin

Pin for level input for blanking level adjusting.

10 LVCHA

Character level adjustment input pin

Pin for level input for character level adjusting.

11 V

DD2

Supply pin Pin for power supply for adjusting signal level of composite video (power

supply for analog system).

12 CV OUT Video signal output pin Pin for composite video signal output. 13 NC Non connection. 14 CV IN Video signal input pin Pin for composite video signal input. 15 V

DD1

Power supply pin Pin for power supply (+5V).

16 SYNI

Synchronizing separator circuit input pin

Pin for input of separator circuit composite synchronizing signal.

17 SEPC

Synchronizing separator circuit adjustment pin

Pin for adjusting synchronizing separator circuit (connecting capacitor).

18 SEP OUT Composite synchronizing

signal output pin

Pin for output of composite synchronizing signal for synchronizing separator circuit

19 SEP IN

Vertical synchronizing signal input pin

Pin for input of vertical synchronizing signal and integrating output signal of SEP OUT pin. Applied when connecting an integrating circuit to the SEP OUT pin.

20 OSC OUT

LC oscillation pin

Pin for connecting a capacitor or oscillator coil for pixel clock generation and

21 OSC IN

character output applications.

22 V

DD1

Power supply pin (+5V) Pin for power supply (+5V).

LC74711

No. 4245-5/16

System Block Diagram

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