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  ON Semiconductor Electronic Components Datasheet  

LC74772V Datasheet

On-Screen Display LSI

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Ordering number : EN5159B
LC74772V
CMOS LSI
On-Screen Display LSI
for Camcorder
http://onsemi.com
Overview
The LC74772V is a CMOS LSI that implements on-screen display for camcorders. It displays characters and
patterns in a camcorder viewfinder under microprocessor control. The LC74772V displays a 12 18 dot font with
256 characters.
Functions
Screen format: 12 lines 24 characters (up to 288 characters)
Number of characters displayed: Up to 288 characters
Character format: 12 (horizontal) 18 (vertical) dots
Number of characters in font: 256 characters
Character sizes: Normal and double, specified in line units
Display start position
— Horizontal: 64 positions
— Vertical: 64 positions
Character reverse video function: Individual characters can be displayed in reverse video.
Types of blinking: Two types with periods of 1.0 and 0.5 seconds, specifiable on a per character basis.
(Blinking has a 60% display on duty.)
(Four divisors: 1/25, 1/30, 1/50, 1/60)
Outputs: R, G, B plus 2 output systems
Or: 4 output systems (character data and blanking data: 4 outputs each)
External control input: 8-bit serial data input format.
Specifications
Absolute Maximum Ratings
Parameter
Supply voltage
Input voltage
Output voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VDD
VIN
VOUT
Pd max
Topr
Tstg
Conditions
VDD
All input pins
CKOUT, CHA4, BLK4, CHA3, BLK3, B, G, R, BLANK
Ta = 25°C
Ratings
VSS – 0.3 to VSS + 7.0
VSS – 0.3 to VDD + 0.3
VSS – 0.3 to VDD + 0.3
300
–30 to +70
–40 to +125
unit
V
V
V
mW
C
C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed,
damage may occur and reliability may be affected.
Package Dimensions
unit : mm
SSOP24(275mil)
7.8
24 13
1
0.65
(0.33)
12
0.22
0.15
Semiconductor Components Industries, LLC, 2013
July, 2013
23099HA(OT)/O3096HA(OT)/D3095HA (OT) No.5159-1/17


  ON Semiconductor Electronic Components Datasheet  

LC74772V Datasheet

On-Screen Display LSI

No Preview Available !

LC74772V
Allowable Operating Ranges at Ta = –30 to +70°C
Parameter
Supply voltage
Input high-level voltage
Input low-level voltage
Oscillator frequency
Symbol
Conditions
VDD
VIH
VIL
FOSC
VDD
CTRL1, TESTIN, CS, SCLK, SIN, OUTMOD, HSYNC,
VSYNC, RST
CTRL1, TESTIN, CS, SCLK, SIN, OUTMOD, HSYNC,
VSYNC, RST
OSCIN, OSCOUT (LC oscillator)
min
2.7
0.8 VDD
VSS – 0.3
6
Ratings
typ
5.0
max
5.5
VDD + 0.3
Unit
V
V
0.2 VDD
V
(8) 10 MHz
Electrical Characteristics at Ta = –30 to +70°C, unless otherwise specified VDD = 5 V
Parameter
Output high-level voltage
Output low-level voltage
Input current
Operating current drain
Symbol
Conditions
CKOUT, CHA4, BLK4, CHA3, BLK3, B, G, R, BLANK:
VOH VDD = 5.5 to 4.5 V (VDD = 4.4 to 2.7 V), IOH = –1.0 mA
(–0.5 mA)
CKOUT, CHA4, BLK4, CHA3, BLK3, B, G, R, BLANK:
VOL VDD = 5.5 to 4.5 V (VDD = 4.4 to 2.7 V), IOL = 1.0 mA
(0.5 mA)
IIH
CTRL1, TESTIN, CS, SCLK, SIN, OUTMOD, HSYNC,
VSYNC: VIN = VDD
IIL CTRL1, TESTIN, HSYNC, VSYNC: VIN = VSS
IDD VDD pin; all outputs open, LC oscillator: 8 MHz
min
0.9 VDD
–1
Ratings
typ
Unit
max
V
0.1 VDD
V
1 µA
µA
10 mA
Timing Characteristics at Ta = –30 to +70°C, VDD = 5 ± 0.5 V
Parameter
Minimum input pulse width
Data setup time
Data hold time
One-word write time
Symbol
Conditions
tW (SCLK)
tW (CS)
tSU (CS)
tSU (SIN)
th (CS)
th (SIN)
tword
twt
SCLK
CS (the period that CS is high)
CS
SIN
CS
SIN
The time to write 8 bits of data
The RAM data write time
min
200
1
200
200
2
200
4.2
1
Ratings
typ
max
Unit
ns
µs
ns
ns
µs
ns
µs
µs
No. 5159-2/17


Part Number LC74772V
Description On-Screen Display LSI
Maker ON Semiconductor
Total Page 17 Pages
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