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LC74789JM の電気的特性と機能

LC74789JMのメーカーはSanyo Semicon Deviceです、この部品の機能は「On-Screen Display Controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 LC74789JM
部品説明 On-Screen Display Controller
メーカ Sanyo Semicon Device
ロゴ Sanyo Semicon Device ロゴ 




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LC74789JM Datasheet, LC74789JM PDF,ピン配置, 機能
Ordering number : EN5732A
CMOS IC
LC74789, 74789M, 74789JM
On-Screen Display Controller
Overview
The LC74789, LC74789M, and LC74789JM 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: 256 (254 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
[LC74789]
unit: mm
3045B-MFP24
[LC74789M]
unit: mm
3112-MFP24S
[LC74789JM]
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. 5732-1/23

1 Page





LC74789JM pdf, ピン配列
LC74789, 74789M, 74789JM
Continued from preceding page.
Pin No. Pin Name
Function
Notes
13 CVOUT
14 VSS2
15 CVIN
16 CVCR
17 VDD1
18 SYNIN
Video signal output
Ground
Video signal input
Video signal input
Power supply
Sync separator circuit input
Composite video signal output
Ground connection (analog system ground)
Composite video signal input
SECAM chrominance signal input
Power supply (+5 V: digital system power supply)
Video signal input to the internal sync separator circuit (Used as either the horizontal
synchronizing signal or the composite synchronizing signal input when the internal sync
separator circuit is not used.)
19 SEPC
Sync separator circuit bias
voltage
Internal sync separator circuit bias voltage monitor
20 SEPOUT
Composite synchronizing
signal output
Internal sync separator circuit composite synchronizing signal output. Can be switched to
function as a signal (high, low, or ST. pulse) output by the SEL0 and MOD0 setting.
Inputs the vertical synchronizing signal created by integrating the SEPOUT pin output signal.
21
SEPIN
Vertical synchronizing signal input
An integration circuit must be connected to the SEPOUT pin. This pin must be tied to VDD1 if
unused. This pin can be switched to function as the frame signal input mode by setting SEL1
high. This is valid when CTL3 is set high. This input has hysteresis characteristics.
22 CDLR
Background color phase
adjustment
Background color phase adjustment. Connect a resistor between this pin and ground.
23 RST
Reset input
System reset input.
A pull-up resistor is built in and the input has hysteresis characteristics.
24 VDD1
Power supply (+5 V)
Power supply (+5 V: digital system power supply)
Note: Both VDD1 pins must be connected to the power supply.
No. 5732-3/23


3Pages


LC74789JM 電子部品, 半導体
LC74789, 74789M, 74789JM
Timing Characteristics at Ta = –30 to +70°C, VDD1 = 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 when CS is high)
CS
SIN
CS
SIN
The time to write 8 bits of data
The RAM data write time
Serial Data Input Timing
min
200
1
200
200
2
200
4.2
1
Ratings
typ
max
Unit
ns
µs
ns
ns
µs
ns
µs
µs
First byte
Second byte
A08697
No. 5732-6/23

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
LC74789JM

On-Screen Display Controller

Sanyo Semicon Device
Sanyo Semicon Device


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