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PDF LC74786JM Data sheet ( Hoja de datos )

Número de pieza LC74786JM
Descripción On-Screen Display Controller
Fabricantes Sanyo Semicon Device 
Logotipo Sanyo Semicon Device Logotipo



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No Preview Available ! LC74786JM Hoja de datos, Descripción, Manual

Ordering number : EN5729A
CMOS IC
LC74786, 74786M, 74786JM
On-Screen Display Controller
Overview
The LC74786, LC74786M, and LC74786JM are on-
screen display controller CMOS ICs that display
characters and patterns on the TV screen under
microprocessor control. These ICs support 12 × 18-dot
characters and can display 12 lines by 24 characters of
text.
Features
• Display format: 24 characters by 12 rows (Up to 288
characters)
• Character format: 12 (horizontal) × 18 (vertical) dots
• Character sizes: Three sizes each in the horizontal and
vertical directions
• Characters in font: 128 (128 characters, one spacing
character, and one transparent spacing character)
• Initial display positions: 64 horizontal positions and 64
vertical positions
• Blinking: Specifiable in character units
• Blinking types: Two periods supported: About 1.0
second and about 0.5 second
• Blanking: Over the whole font (12 × 18 dots)
• Background color: 8 colors (internal synchronization
mode): 2fSC and 4fSC
• Line background color
— Can be set for 3 lines
— Line background color: 8 colors (internal
synchronization mode): 2fSC and 4fSC
• External control input: 8-bit serial input format
• On-chip sync separator circuit
• Video outputs - NTSC, PAL, PAL-N, PAL-M, NTSC
4.43, and PAL60 format composite video outputs
• Package
— 24-pin plastic DIP-24S (300 mil)
— 24-pin plastic MFP-24 (375 mil)
— 24-pin plastic MFP-24S (300 mil)
Package Dimensions
unit: mm
3067-DIP24S
[LC74786]
unit: mm
3045B-MFP24
[LC74786M]
unit: mm
3112-MFP24S
[LC74786JM]
SANYO: DIP24S
SANYO: MFP24
SANYO: MFP24S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
30698HA (OT) No. 5729-1/23

1 page




LC74786JM pdf
LC74786, 74786M, 74786JM
Electrical Characteristics at Ta = –30 to +70°C. VDD1 = 5 V unless otherwise specified.
Parameter
Symbol
Pin
Conditions
Input off leakage current
Output off leakage current
Output high-level voltage
Output low-level voltage
Ileak1
Ileak2
VOH1
VOL1
CVIN
CVOUT
HFTONOUT, SYNCJDG, and SEPOUT
HFTONOUT, SYNCJDG, and SEPOUT
VDD1 = 4.5 V,
IOH = –1.0 mA
VDD1 = 4.5 V,
IOL = –1.0 mA
H
Three-value output voltage
VO CHABLK
VDD1 = 5.0 V M
L
Input current
Operating mode current drain
RST, CS, SIN, SCLK, CTRL1,
IIH SEPIN, and MUTE
IIL CTRL1 and OSCIN
IDD1 VDD1
VIN = VDD1
VIN = VSS1
All outputs: open
Xtal:7.159 MHz
LC:8 MHz
IDD2 VDD2
VDD2 = 5 V
(1)
SYNC level
VSN
(2)
(3)
(1)
Pedestal level
VPD
(2)
(3)
(1)
Color burst low level
VCBL
(2)
(3)
(1)
Color burst high level
VCBH
(2)
(3)
(1)
Background color low level (other than blue)
VRSL0
(2)
(3)
(1)
Background color high level (other than blue)
Blue background 1 low level
VRSH0
VRSL1
CVOUT
(1): When the sync level = 0.8 V
(2): When the sync level = 1.0 V
(3): When the sync level = 1.3 V
(2)
VDD1 = 5.0 V (3)
VDD2 = 5.0 V (1)
(2)
(3)
(1)
Blue background 2 low level
VRSL2
(2)
(3)
(1)
Blue background 1 and 2 high level
VRSH1, 2
(2)
(3)
(1)
Frame level 0
VBK0
(2)
(3)
(1)
Frame level 1
VBK1
(2)
(3)
(1)
Character level
VCHA
(2)
(3)
Note: Blue background 1 or 2 are option settings.
Ratings
min typ max
1
1
3.5
1.0
3.3 5.0
1.8 2.3
0 0.8
1
–1
15
0.70
0.89
1.18
1.32
1.52
1.81
0.98
1.17
1.46
1.63
1.83
2.11
1.17
1.36
1.65
2.33
2.52
2.81
1.08
1.27
1.56
1.49
1.68
1.97
1.97
2.17
2.46
1.40
1.60
1.89
1.97
2.17
2.46
2.55
2.75
3.04
0.82
1.01
1.30
1.44
1.64
1.93
1.10
1.29
1.58
1.75
1.95
2.23
1.29
1.48
1.77
2.45
2.64
2.93
1.20
1.39
1.68
1.61
1.80
2.09
2.09
2.29
2.58
1.52
1.72
2.01
2.09
2.29
2.58
2.67
2.87
3.16
20
0.94
1.13
1.42
1.56
1.76
2.05
1.22
1.41
1.70
1.87
2.07
2.35
1.41
1.60
1.89
2.57
2.76
3.05
1.32
1.51
1.80
1.83
1.92
2.21
2.21
2.41
2.70
1.64
1.84
2.13
2.21
2.41
2.70
2.79
2.99
3.28
Unit
µA
µA
V
V
V
V
V
µA
µA
mA
mA
V
V
V
V
V
V
V
V
V
V
V
V
No. 5729-5/23

5 Page





LC74786JM arduino
LC74786, 74786M, 74786JM
COMMAND2: Vertical display start position and vertical character size setup command
• First byte
DA
Register
0 to 7
7—
6—
5—
4—
3 VS21
2 VS20
1 VS11
0 VS10
Contents
State
Function
1
0 Command 2 identification code.
1 Sets the vertical display start position and the vertical character size.
0
0
1 VS21
VS20
00
11
0
1H/dot
3H/dot
1
2H/dot
1H/dot
0
1 VS11
VS10
00
11
0
1H/dot
3H/dot
1
2H/dot
1H/dot
Notes
Second line vertical character size
First line vertical character size
• Second byte
DA
0 to 7
7
6
5
4
3
2
1
0
Register
FS
VP5
(MSB)
VP4
VP3
VP2
VP1
VP0
(LSB)
Contents
State
Function
0 Second byte identification bit
0 Crystal oscillator frequency: 2fsc
1 Crystal oscillator frequency: 4fsc
0 If VS is the vertical display start position then:
5
1 VS = α + H × (2Σ 2n VPn)
n=0
0 H: the horizontal synchronization pulse period
1 α = 20 H (in 525-line systems)
0 = 25 H (in 625-line systems)
1
0
1
0
1 Character
0 display area
1
Note: All registers are set to 0 when the LC74786/M/JM is reset by the RST pin.
Notes
The vertical display start position is set by the 6 bits
VP0 to VP5.
The weight of bit 1 is 2H.
No. 5729-11/23

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