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LC74775M Dataheets PDF



Part Number LC74775M
Manufacturers Sanyo Semicon Device
Logo Sanyo Semicon Device
Description On-Screen Display Controller
Datasheet LC74775M DatasheetLC74775M Datasheet (PDF)

Ordering number : EN*5919 CMOS IC LC74775, 74775M On-Screen Display Controller IC Preliminary Overview The LC74775/M is an on-screen display controller CMOS IC that displays characters and patterns on the TV screen under microprocessor control. This IC includes a built-in PDC/VPS/UDT interface circuit. Package Dimensions unit: mm 3196-DIP30SD [LC74775] Functions • Display format: 24 characters by 12 rows (Up to 288 characters) • Character format: 12 (horizontal) × 18 (vertical) dots • Charac.

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Ordering number : EN*5919 CMOS IC LC74775, 74775M On-Screen Display Controller IC Preliminary Overview The LC74775/M is an on-screen display controller CMOS IC that displays characters and patterns on the TV screen under microprocessor control. This IC includes a built-in PDC/VPS/UDT interface circuit. Package Dimensions unit: mm 3196-DIP30SD [LC74775] Functions • 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 (Of the 128 characters, one is a space character (7E hexadecimal) and one is a transparent space character (7F hexadecimal)) • Initial display positions: 64 horizontal positions and 64 vertical positions • Blinking: Specifiable in character units • Blinking types: Two periods supported: 1.0 second and 0.5 second • Blanking: Over the whole font (12 × 18 dots) • Background color: 8 colors (internal synchronization mode): 4fSC and 2fSC Blue background only: NTSC • Line background color: Three lines can be set up. 8 line background colors (in internal synchronization mode): 4fSC and 2fSC • External control input: 8-bit serial input format • On-chip sync separator circuit • Video outputs: PAL and NTSC format composite video outputs • On-chip PDC/VPS/UDT interface circuit supporting I2C • Package: DIP30SD MFP30S SANYO: DIP30SD unit: mm 3216A-MFP30S [LC74775M] SANYO: MFP30S 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 Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN N1198RM(OT) No. 5919-1/35 LC74775, 74775M Pin Assignment No. 5919-2/35 LC74775, 74775M Pin Functions Pin no. 1 2 Pin VSS1 XtalIN XtalOUT (MUTE) Crystal oscillator input switching (CHABLK) I2C clock input LC oscillator connections Crystal oscillator (MUTE input) Ground Function Ground connection (digital system ground) These pins are used either to connect the crystal and capacitors used to form an external crystal oscillator circuit to generate the internal synchronizing signals, or to input an external clock signal (2fsc or 4fsc). As a mask option, the XtalOUT pin can be set to function as the MUTE input pin. When this pin is set low, the video output is held at the pedestal level. (A pull-up resistor is built in and the input has hysteresis characteristics.) Switches the mode between external clock input and crystal oscillator operation. A low level selects crystal oscillator operation and a high level selects external clock input. As a mask option, the CTRL1 input pin can be set to function as the CHABLK (character . frame) output. This is a 3-value output. Clock input for the PDC/VPS data output. I2C bus. Connection for the external coil and capacitor for the oscillator used to generate the character output dot clock Outputs the state of the external synchronizing signal presence/absence judgment. Outputs a high level when synchronizing signals are present. Outputs either the crystal oscillator clock if CS and RST are low, or the VCO clock if CS and RST are high. (This signal is not output after a command reset.) Enable input for the OSD serial data input. Serial data input is enabled when this pin is low. A pull-up resistor is built in and the input has hysteresis characteristics. Serial data input enable pin. A pull-up resistor is built in and the input has hysteresis characteristics. Serial data input. A pull-up resistor is built in and the input has hysteresis characteristics. Composite video signal level adjustment power supply (analog system power supply) Charge pump output. Connect a low-pass filter to this pin. VCO oscillator control voltage input. (For data slicing) Ground (VCO ground) VCO oscillator range adjustment resistor connection This pin must either be connected to ground or left open Power supply (+5 V) Video signal output Ground Video signal input Video signal input Power supply (+5 V) Sync separator circuit input Slice level output Composite synchronizing signal output I2C bus data I/O Background color phase adjustment Reset input Power supply (+5 V) Power supply (+5 V: VCO power supply) Composite video signal output Grou.


LC74775 LC74775M LC74776


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