Sanyo LC74711 Specifications

Ordering number : ENN*4245A

CMOS LSI

LC74711

Controller LSI for On-screen Displays

Preliminary

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

Package Dimensions

unit : mm

3059-DIP22S
		[LC74711]
22		12
			7.62	6.4
				0.25
1		11
	21.2
			3.25	3.9max
			0.51min	3.3
0.95	0.48	1.78	1.7
				SANYO: DIP22S

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.

SANYO Electric Co.,Ltd. Semiconductor Company

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

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

LC74711

Specifications

Absolute Maximum Ratings

Item	Symbol	Conditions/Pins	Ratings	Unit
Maximum supply voltage	VDD max	VDD1, VDD2	VSS–0.3 to VSS+7.0	V
Maximum input voltage	VIN max	All input pins	VSS–0.3 to VDD+0.3	V
Maximum output voltage	VOUT 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

VDD1

VDD1 pin

4.5

5.0

5.5

V

VDD2

VDD2 pin

4.5

5.0

1.27VDD1

V

Input “H” level voltage

VIH

SCLK, SEPIN pin

0.8VDD1

VDD1+0.3

V

CS,

SIN,

RST,

Input “L” level voltage

VIL

SIN,

SCLK, SEPIN pin

VSS–0.3

0.2VDD1

V

CS,

RST,

Composite video input voltage

VIN1

CVIN pin

2VP-P

V

VIN2

SYNI pin

2VP-P

2.5VP-P

Oscillation frequency

FOSC1

Xtal oscillation pin (2 fsc)

7.159

MHz

FOSC2

Xtal oscillation pin (4 fsc)

14.318

MHz

FOSC3

LC oscillation pin (when using LC oscillation)

5

7

10

MHz

Electrical Characteristics at Ta = –30 to +70 °C, default of VDD1 = 5 V

Item

Symbol

Pins

Conditions

Ratings

Unit

min

typ

max

Output off leak current

Ileak

CV OUT pin

10

µA

Output “H” level voltageVOH1

SEP OUT pin

VDD1 = 4.5V, IOH = –1.0mA

3.5

V

Output “L” level voltage VOL1

SEP OUT pin

VDD1 = 4.5V, IOL = 1.0mA

1.0

V

SIN,

VIN = VDD1

IIH

CS,

RST,

1

µA

Input current

SCLK, SEPIN pin

IIL

OSCIN pin

VIN = VSS

–1

µA

Current consumption

IDD1

VDD1 pin

All output are OPEN

10

mA

Xtal = 14.318MHz, LC = 7MHz

during operation

IDD2

VDD2 pin

VDD2 = 5.0V

15

mA

Timing Characteristics at Ta = –30 to +70°C, VDD1 = 5 ± 0.5 V

Item

Symbol

Conditions/Pins

Ratings

Unit

min

typ

max

Input minimum pulse width

tw (SCLK)

SCLK pin

200

ns

tw (CS)

CS pin (with CS set to “H” period)

1

µs

tsu (CS)

pin

200

ns

Data setup time

CS

tsu (SIN)

SIN pin

200

ns

th (CS)

pin

2

µs

Data hold time

CS

th (SIN)

SIN pin

200

ns

Single word and write time

tword

16-bit write time

10

µs

twt

RAM data write time

1

µs

No. 4245-2/16

LC74711

Serial Data Input Timing

Pin Assignment

No. 4245-3/16

							LC74711
Pin Functions
	Pin No.		Pin Symbol			Pin name	Functions
	1		VSS1			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
							synchronizing signal oscillation applications.
	3		Xtal OUT
	4		TEST			Test output pin	Pin for test data output.
	5					Reset input pin	Pin for system reset input (hysteresis input).
			RST
	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.
							Pin for enable input for serial data processing (hysteresis input). “L” serial data
	8		CS			Enable input pin
							input switches to enable.
	9		LVBK			Blanking level adjustment	Pin for level input for blanking level adjusting.
						input pin
	10		LVCHA			Character level adjustment	Pin for level input for character level adjusting.
						input pin
	11		VDD2			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		VDD1			Power supply pin	Pin for power supply (+5V).
	16		SYNI			Synchronizing separator	Pin for input of separator circuit composite synchronizing signal.
						circuit input pin
	17		SEPC			Synchronizing separator	Pin for adjusting synchronizing separator circuit (connecting capacitor).
						circuit adjustment pin
	18		SEP OUT			Composite synchronizing	Pin for output of composite synchronizing signal for synchronizing separator circuit.
						signal output pin
	19		SEP IN			Vertical synchronizing	Pin for input of vertical synchronizing signal and integrating output signal of SEP OUT
						signal input pin	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
							character output applications.
	21		OSC IN
	22		VDD1			Power supply pin (+5V)	Pin for power supply (+5V).

No. 4245-4/16

LC74711

System Block Diagram

No. 4245-5/16