MAX7456
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MAX7456EVKIT+ (pdf) |
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EVALUATION KIT AVAILABLE AVAILABLE MAX7456 Single-Channel Monochrome On-Screen Display with Integrated EEPROM The MAX7456 single-channel monochrome on-screen display OSD generator lowers system cost by eliminating the need for an external video driver, sync separator, video switch, and EEPROM. The MAX7456 serves all national and international markets with 256 user-programmable characters in NTSC and PAL standards. The MAX7456 easily displays information such as company logo, custom graphics, time, and date with arbitrary characters and sizes. The MAX7456 is preloaded with 256 characters and pictographs and can be reprogrammed in-circuit using the SPITM port. The MAX7456 is available in a 28-pin TSSOP package and is fully specified over the extended -40°C to +85°C temperature range. Security Switching Systems Security Cameras Industrial Applications In-Cabin Entertainment Consumer Electronics Pin Configuration appears at end of data sheet. SPI is a trademark of Motorola, Inc. 256 User-Defined Characters or Pictographs in Integrated EEPROM 12 x 18 Pixel Character Size Blinking, Inverse, and Background Control Character Attributes Selectable Brightness by Row Displays Up to 16 Rows x 30 Characters Sag Compensation On Video-Driver Output LOS, VSYNC, HSYNC, and Clock Outputs Internal Sync Generator NTSC and PAL Compatible SPI-Compatible Serial Interface Delivered with Preprogrammed Character Set Ordering Information PART MAX7456EUI+ PIN-PACKAGE 28 TSSOP-EP* LANGUAGE English/ Japanese *EP = Exposed pad. +Denotes a lead-free/RoHS-compliant package. Note This device is specified over the -40°C to +85°C operating temperature range. Simplified Functional Diagram FunAVcDD tionaAGlNDDiagrams DVDD DGND PVDD PGND CLKIN XFB CLKOUT HSYNC VSYNC CS SCLK SDIN SDOUT CLAMP XTAL OSCILLATOR SYSTEM SYNC CLOCK SEPARATOR VIDEO DRIVER SERIAL INTERFACE VIDEO TIMING GENERATOR DISPLAY ADDRESS SYNC DISPLAY MEMORY SRAMS CHARACTER ADDRESS MAX7456 CHARACTER MEMORY NVM PIXEL CODE SAG NETWORK OSD GENERATOR PIXEL CONTROL VOUT SAG Pin ConfiguRrEaSEtTions appear at ePOnRd of data sheet. Functional Diagrams continued at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at MAX7456 Single-Channel Monochrome On-Screen Display with Integrated EEPROM ABSOLUTE MAXIMUM RATINGS AVDD to AGND to +6V DVDD to DGND to +6V PVDD to +6V AGND to +0.3V AGND to PGND to +0.3V DGND to +0.3V VIN, VOUT, SAG to AGND......................-0.3V to VAVDD + 0.3V HSYNC, VSYNC, LOS to AGND ...............................-0.3V to +6V RESET to AGND to VAVDD + 0.3V *As per JEDEC51 Standard Multilayer Board . CLKIN, CLKOUT, XFB to DGND ............-0.3V to VDVDD + 0.3V SDIN, SCLK, CS, SDOUT to DGND........-0.3V to VDVDD + 0.3V Maximum Continuous Current into VOUT........................±100mA Continuous Power Dissipation TA = +70°C 28-Pin TSSOP derate 27mW/°C above +70°C .......2162mW* Operating Temperature Range ...........................-40°C to +85°C Junction Temperature Storage Temperature Range .............................-60°C to +150°C Lead Temperature soldering, 10s .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS VAVDD = +4.75V to +5.25V, VDVDD = +4.75V to +5.25V, VPVDD = +4.75V to +5.25V, TA = TMIN to TMAX. Typical values are at VAVDD = VDVDD = VPVDD = +5V, TA = +25°C, unless otherwise noted. Note 1 PARAMETER POWER SUPPLIES Analog Supply Voltage Digital Supply Voltage Driver Supply Voltage Analog Supply Current CONDITIONS VAVDD VDVDD VPVDD IAVDD VIN = 1VP-P 100% white flat field signal , VOUT load, RL = 150Ω MAX UNITS Digital Supply Current IDVDD VIN = 1VP-P 100% white flat field signal , VOUT load, RL = 150Ω Driver Supply Current IPVDD VIN = 1VP-P 100% white flat field signal , VOUT load, RL = 150Ω NONVOLATILE MEMORY Data Retention TA = +25°C Endurance TA = +25°C DIGITAL INPUTS CS, SDIN, RESET, SCLK Input High Voltage Input Low Voltage Input Hysteresis VHYS Input Leakage Current VIN = 0 or VDVDD Input Capacitance |
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