MAX7456EUI+T ,Single-Channel Monochrome On-Screen Display with Integrated EEPROMELECTRICAL CHARACTERISTICS(V = +4.75V to +5.25V, V = +4.75V to +5.25V, V = +4.75V to +5.25V, T = T ..
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MAX7456EUI+-MAX7456EUI+T
Single-Channel Monochrome On-Screen Display with Integrated EEPROM
AVAILABLE
EVALUATION KIT AVAILABLE
Single-Channel Monochrome On-Screen
Display with Integrated EEPROM
General DescriptionThe MAX7456 single-channel monochrome on-screen
display (OSD) generator lowers system cost by elimi-
nating the need for an external video driver, sync sepa-
rator, video switch, and EEPROM. The MAX7456 serves
all national and international markets with 256 user-pro-
grammable characters in NTSC and PAL standards.
The MAX7456 easily displays information such as com-
pany logo, custom graphics, time, and date with arbi-
trary characters and sizes. The MAX7456 is preloaded
with 256 characters and pictographs and can be repro-
grammed in-circuit using the SPITMport.
The MAX7456 is available in a 28-pin TSSOP package
and is fully specified over the extended (-40°C to
+85°C) temperature range.
ApplicationsSecurity Switching Systems
Security Cameras
Industrial Applications
In-Cabin Entertainment
Consumer Electronics
Features256 User-Defined Characters or Pictographs in
Integrated EEPROM12 x 18 Pixel Character SizeBlinking, Inverse, and Background Control
Character AttributesSelectable Brightness by RowDisplays Up to 16 Rows x 30 CharactersSag Compensation On Video-Driver OutputLOS, VSYNC, HSYNC, and Clock OutputsInternal Sync GeneratorNTSC and PAL CompatibleSPI-Compatible Serial InterfaceDelivered with Preprogrammed Character Set
Ordering Information
PARTPIN-PACKAGELANGUAGEMAX7456EUI+28 TSSOP-EP*English/
Japanese
*EP = Exposed pad.
+Denotes a lead-free/RoHS-compliant package.
Note:This device is specified over the -40°C to +85°C operat-
ing temperature range.
Pin Configuration appears at end of data sheet.SERIAL
INTERFACE
DISPLAY
ADDRESS
VIDEO
DRIVER
VIDEO
TIMING
GENERATOR
DISPLAY
MEMORY
(SRAMS)
CHARACTER
ADDRESS
PIXEL
CODE
SYNC
PIXEL
CONTROLCHARACTER
MEMORY
(NVM)
OSD
GENERATOR
SAG
NETWORK
OSD
MUX
DAC
SYSTEM
CLOCK
POR
SYNC
SEPARATORXTAL
OSCILLATOR
CLAMPVIN
CLKIN
XFB
CLKOUT
RESET
HSYNC
VSYNC
LOS
SCLK
SDIN
SDOUT
AVDDAGNDDVDDDGNDPVDDPGND
VOUT
SAG
MAX7456
Simplified Functional DiagramSPI is a trademark of Motorola, Inc.
MAX7456
Single-Channel Monochrome On-Screen
Display with Integrated EEPROM
ABSOLUTE MAXIMUM RATINGSStresses 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.
AVDD to AGND........................................................-0.3V to +6V
DVDD to DGND........................................................-0.3V to +6V
PVDD to PGND.........................................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
AGND to PGND.....................................................-0.3V to +0.3V
DGND to PGND.....................................................-0.3V to +0.3V
VIN, VOUT, SAG to AGND......................-0.3V to (VAVDD + 0.3V)
HSYNC, VSYNC, LOS to AGND...............................-0.3V to +6V
RESETto AGND.....................................-0.3V to (VAVDD + 0.3V)
CLKIN, CLKOUT, XFBto DGND............-0.3V to (VDVDD + 0.3V)
SDIN, SCLK, CS, SDOUTto 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......................................................+150°C
Storage Temperature Range.............................-60°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
ELECTRICAL CHARACTERISTICS(VAVDD= +4.75V to +5.25V, VDVDD= +4.75V to +5.25V, VPVDD= +4.75V to +5.25V, TA= TMINto TMAX. Typical values are at VAVDD
= VDVDD= VPVDD= +5V, TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
POWER SUPPLIESAnalog Supply VoltageVAVDD4.7555.25V
Digital Supply VoltageVDVDD4.7555.25V
Driver Supply VoltageVPVDD4.7555.25V
Analog Supply CurrentIAVDDVIN = 1VP-P (100% white flat field signal),
VOUT load, RL = 150Ω2435mA
Digital Supply CurrentIDVDDVIN = 1VP-P (100% white flat field signal),
VOUT load, RL = 150Ω2530mA
Driver Supply CurrentIPVDDVIN = 1VP-P (100% white flat field signal),
VOUT load, RL = 150Ω5880mA
NONVOLATILE MEMORYData RetentionTA = +25°C100Years
EnduranceTA = +25°C100,000Stores
DIGITAL INPUTS (CS, SDIN, RESET, SCLK)Input High VoltageVIH2.0V
Input Low VoltageVIL0.8V
Input HysteresisVHYS50mV
Input Leakage Current VIN = 0 or VDVDD±10µA
Input CapacitanceCIN5pF
DIGITAL OUTPUTS (SDOUT, CLKOUT, VSYNC, HSYNC, LOS)Output High VoltageVOHISOURCE = 4mA (SDOUT, CLKOUT)2.4V
Output Low VoltageVOLISINK = 4mA0.45V
Tri-State Leakage CurrentSDOUT, CS = VDVDD±10µA
*As per JEDEC51 Standard (Multilayer Board).
MAX7456
Single-Channel Monochrome On-Screen
Display with Integrated EEPROM
ELECTRICAL CHARACTERISTICS (continued)(VAVDD= +4.75V to +5.25V, VDVDD= +4.75V to +5.25V, VPVDD= +4.75V to +5.25V, TA= TMINto TMAX. Typical values are at VAVDD
= VDVDD= VPVDD= +5V, TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
CLOCK INPUT (CLKIN)Clock Frequency27MHz
Clock-Pulse High14ns
Clock-Pulse Low14ns
Input High Voltage0.7 x
VDVDDV
Input Low Voltage0.3 x
VDVDDV
Input Leakage Current VIN = 0V or VDVDD±50µA
CLOCK OUTPUT (CLKOUT)Duty Cycle5pF and 10kΩ to DGND405060%
Rise Time5pF and 10kΩ to DGND3ns
Fall Time5pF and 10kΩ to DGND3ns
VIDEO CHARACTERISTICSDC Power-Supply RejectionVAVDD = VDVDD = VPVDD = 5V;
VIN = 1VP-P, measured at VOUT40dB
AC Power-Supply Rejection
VAVDD = VDVDD = VPVDD = 5V;
VIN = 1VP-P, measured at VOUT;
f = 5MHz; power-supply ripple = 0.2VP-PdB
Short-Circuit CurrentVOUT to PGND230mA
Line-Time DistortionLTDFigures 1a, 1b0.5%
Output ImpedanceZOUTFigures 1a, 1b0.2Ω
GainFigures 1a, 1b1.892.02.11V/V
Black LevelAt VOUT, Figures 1a, 1bAGND
+ 1.5V
Input-Voltage Operating RangeVINFigures 1a, 3 (Note 2)0.51.2VP-P
Input-Voltage Sync Detection
RangeVINSDFigures 1a, 3 (Note 3)0.52.0VP-P
Maximum Output-Voltage SwingVOUTFigures 1a, 1b2.4VP-P
Output-Voltage Sync Tip Level0.7V
Large Signal Bandwidth (0.2dB)BWVOUT = 2VP-P, Figures 1a, 1b6MHz
VIN to VOUT Delay30ns
Differential GainDG0.5%
Differential PhaseDP0.5Degrees
OSD White LevelVOUT 100% white level with respect to
black level1.251.331.45V
Horizontal Pixel JitterBetween consecutive horizontal lines24ns
Video Clamp Settling Time32Lines
MAX7456
Single-Channel Monochrome On-Screen
Display with Integrated EEPROM
TIMING CHARACTERISTICS(VAVDD= +4.75V to +5.25V, VDVDD= +4.75V to +5.25V, VPVDD= +4.75V to +5.25V, TA= TMINto TMAX. Typical values are at VAVDD
= VDVDD= VPVDD= +5V, TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
SPI TIMINGSCLK PeriodtCP100ns
SCLK Pulse-Width HightCH40ns
SCLK Pulse-Width LowtCL40ns
CS Fall to SCLK Rise SetuptCSS030ns
CS Fall After SCLK Rise HoldtCSH00ns
CS Rise to SCLK SetuptCSS130ns
CS Rise After SCLK HoldtCSH10ns
CS Pulse-Width HightCSW100ns
SDIN to SCLK SetuptDS30ns
SDIN to SCLK HoldtDH0ns
SDOUT Valid Before SCLKtDO120pF to ground25ns
SDOUT Valid After SCLKtDO220pF to ground0ns
CS High to SDOUT High
ImpedancetDO320pF to ground300ns
CS Low to SDOUT Logic LeveltDO420pF to ground20ns
HSYNC, VSYNC, AND LOS TIMING
LOS, VSYNC, and HSYNC Valid
before CLKOUT Rising EdgetDOV20pF to ground30ns
NTSC external sync mode, Figure 4375VOUT Sync to VSYNC Falling
Edge DelaytVOUT-VSFPAL external sync mode, Figure 6400ns
ELECTRICAL CHARACTERISTICS (continued)(VAVDD= +4.75V to +5.25V, VDVDD= +4.75V to +5.25V, VPVDD= +4.75V to +5.25V, TA= TMINto TMAX. Typical values are at VAVDD
= VDVDD= VPVDD= +5V, TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
OSD CHARACTERISTICSOSD Rise TimeOSD insertion mux register
OSDM[5,4,3] = 011b60ns
OSD Fall TimeOSD insertion mux register
OSDM[5,4,3] = 011b60ns
OSD Insertion Mux Switch TimeOSD insertion mux register
OSDM[2,1,0] = 011b75ns
MAX7456
Single-Channel Monochrome On-Screen
Display with Integrated EEPROM
Note 1: See the standard test circuits of Figure 1. RL= 75Ω, unless otherwise specified. All digital input signals are timed from a
voltage level of (VIH+ VIL) / 2. All parameters are tested at TA= +85°C and values through temperature range are guaran-
teed by design.
Note 2:The input-voltage operating range is the input range over which the output signal parameters are guaranteed (Figure 3).
Note 3:The input-voltage sync detection range is the input composite video range over which an input sync signal is properly
detected and the OSD signal appears at VOUT. However, the output voltage specifications are not guaranteed for input sig-
nals exceeding the maximum specified in the input operating voltage range (Figure 3).
TIMING CHARACTERISTICS (continued)(VAVDD= +4.75V to +5.25V, VDVDD= +4.75V to +5.25V, VPVDD= +4.75V to +5.25V, TA= TMINto TMAX. Typical values are at VAVDD
= VDVDD= VPVDD= +5V, TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSNTSC external sync mode, Figure 4400VOUT Sync to VSYNC Rising
Edge DelaytVOUT-VSRPAL external sync mode, Figure 6425ns
NTSC internal sync mode, Figure 540VSYNC Falling Edge to VOUT
Sync DelaytVSF-VOUTPAL internal sync mode, Figure 745ns
NTSC internal sync mode, Figure 532VSYNC Rising Edge to VOUT
Sync DelaytVSR-VOUTPAL internal sync mode, Figure 730ns
VOUT Sync to HSYNC Falling
Edge DelaytVOUT-HSFNTSC and PAL external sync mode,
Figure 8310ns
VOUT Sync to HSYNC Rising
Edge DelaytVOUT-HSRNTSC and PAL external sync mode,
Figure 8325ns
HSYNC Falling Edge to VOUT
Sync DelaytHSF-VOUTNTSC and PAL internal sync mode,
Figure 9115ns
HSYNC Rising Edge to VOUT
Sync DelaytHSR-VOUTNTSC and PAL internal sync mode,
Figure 9115ns
All Supplies High to CS LowtPUDPower-up delay50ms
NVM Write BusytNVW12ms
CIN
0.1μF
RIN
75Ω
a) INPUT TEST CIRCUIT
VIN
SAGCL
22pF
150Ω
b) ONE STANDARD VIDEO LOAD, DC-COUPLED
VOUTSIGNAL
GEN
MAX7456MAX7456
Figure 1. Standard Test Circuits
MAX7456
