MAX7456EVKIT+ Maxim Integrated Products, MAX7456EVKIT+ Datasheet
MAX7456EVKIT+
Specifications of MAX7456EVKIT+
Related parts for MAX7456EVKIT+
MAX7456EVKIT+ Summary of contents
Page 1
... SERIAL SDIN INTERFACE SDOUT RESET POR ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Display with Integrated EEPROM ♦ 256 User-Defined Characters or Pictographs in Integrated EEPROM ♦ Pixel Character Size ♦ ...
Page 2
Single-Channel Monochrome On-Screen Display with Integrated EEPROM ABSOLUTE MAXIMUM RATINGS 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 ...
Page 3
Single-Channel Monochrome On-Screen ELECTRICAL CHARACTERISTICS (continued +4.75V to +5.25V +4.75V to +5.25V, V AVDD DVDD = +5V +25°C, unless otherwise noted.) (Note 1) DVDD PVDD A PARAMETER SYMBOL CLOCK INPUT ...
Page 4
Single-Channel Monochrome On-Screen Display with Integrated EEPROM ELECTRICAL CHARACTERISTICS (continued +4.75V to +5.25V +4.75V to +5.25V, V AVDD DVDD = +5V +25°C, unless otherwise noted.) (Note 1) DVDD PVDD A ...
Page 5
Single-Channel Monochrome On-Screen TIMING CHARACTERISTICS (continued +4.75V to +5.25V +4.75V to +5.25V, V AVDD DVDD = +5V +25°C, unless otherwise noted.) (Note 1) DVDD PVDD A PARAMETER SYMBOL VOUT Sync ...
Page 6
Single-Channel Monochrome On-Screen Display with Integrated EEPROM (V = +5V +5V +5V, T AVDD DVDD PVDD 100% COLOR BARS RESPONSE MAX7456 toc02 CVBS OUT (200mV/div) 10μs/div 6 _______________________________________________________________________________________ Typical Operating Characteristics = +25°C, unless otherwise noted. ...
Page 7
Single-Channel Monochrome On-Screen (V = +5V +5V +5V, T AVDD DVDD PVDD 100% SWEEP RESPONSE 10μs/div DIFFERENTIAL GAIN 0.20 0.15 0.10 0.05 0 -0.05 1st 2nd 3rd STEP 12.5T RESPONSE 400ns/div _______________________________________________________________________________________ Display with Integrated EEPROM ...
Page 8
Single-Channel Monochrome On-Screen Display with Integrated EEPROM (V = +5V +5V +5V, T AVDD DVDD PVDD LINE-TIME DISTORTION 10μs/div H TIMING (INTERNAL-SYNC MODE) 2μs/div 8 _______________________________________________________________________________________ Typical Operating Characteristics (continued) = +25°C, unless otherwise noted. See ...
Page 9
Single-Channel Monochrome On-Screen PIN NAME 1, 2, 13–16, N.C. No Connection. Not internally connected. 27 DVDD Digital Power-Supply Input. Bypass to DGND with a 0.1µF capacitor. 4 DGND Digital Ground Crystal Connection 1. Connect a parallel resonant, fundamental ...
Page 10
Single-Channel Monochrome On-Screen Display with Integrated EEPROM +5V 0.1μF 27MHz CLKOUT CS SDIN SCLK SDOUT Figure 2. Typical Operating Circuit Detailed Description The MAX7456 single-channel monochrome on-screen display (OSD) generator integrates all the functions need generate a user-defined ...
Page 11
Single-Channel Monochrome On-Screen VIN COLOR BURST SYNC TIP LEVEL Figure 3. Definition of Terms The MAX7456’s clamp is a DC-restore circuit that uses the input coupling capacitor to correct any DC shift of the input signal line-by-line basis, ...
Page 12
Single-Channel Monochrome On-Screen Display with Integrated EEPROM Video Timing Generator The video timing generator is a digital circuit generat- ing all internal and external (VSYNC and HSYNC) tim- ing signals. VSYNC and HSYNC can be synchronized to VIN, or run ...
Page 13
Single-Channel Monochrome On-Screen VOUT (ODD FIELD) VOUT (EVEN FIELD) VSYNC HSYNC (ODD FIELD) HSYNC (EVEN FIELD) Figure 5. VOUT, VSYNC, and HSYNC Timing (NTSC, Internal Sync Mode) ______________________________________________________________________________________ Display with Integrated EEPROM VERTICAL SYNCHRONIZATION PULSE INTERVAL 50% 50% 50% t ...
Page 14
Single-Channel Monochrome On-Screen Display with Integrated EEPROM VOUT (ODD FIELD) VOUT (EVEN FIELD) VSYNC HSYNC (ODD FIELD) HSYNC (EVEN FIELD) Figure 6. VOUT, VSYNC, and HSYNC Timing (PAL, External Sync Mode) 14 ______________________________________________________________________________________ VERTICAL SYNCHRONIZATION PULSE INTERVAL 50% 50% 50% ...
Page 15
Single-Channel Monochrome On-Screen VOUT (ODD FIELD) VOUT (EVEN FIELD) VSYNC HSYNC (ODD FIELD) HSYNC (EVEN FIELD) Figure 7. VOUT, VSYNC, and HSYNC Timing (PAL, Internal Sync Mode) ______________________________________________________________________________________ Display with Integrated EEPROM VERTICAL SYNCHRONIZATION PULSE INTERVAL 50% 50% 50% 50% ...
Page 16
Single-Channel Monochrome On-Screen Display with Integrated EEPROM VOUT 50% HSYNC Figure 8. VOUT, and HSYNC Horizontal Sync Timing (NTSC and PAL, External Sync Mode) VOUT 50% HSYNC Figure 9. VOUT and HSYNC Horizontal Sync Timing (NTSC and PAL, Internal Sync ...
Page 17
Single-Channel Monochrome On-Screen Character Memory (NVM) The character memory is a 256-row x 64-byte wide nonvolatile memory (NVM) that stores the characters or graphic images, and is factory preloaded with the char- acters shown in Figure 12. The content of ...
Page 18
Single-Channel Monochrome On-Screen Display with Integrated EEPROM CDMI CDMI CDMI 0 [7, 6] [5, 4] [3, 2] [7, 6] [ [7, 6] [ [7, 6] [5, 4] [3, 2] ...
Page 19
Single-Channel Monochrome On-Screen Figure 12. Character Address Map (Default Character Set) ______________________________________________________________________________________ Display with Integrated EEPROM CA[3:0], CMAH[3:0] 19 ...
Page 20
Single-Channel Monochrome On-Screen Display with Integrated EEPROM ADDRESS . CMAH ...
Page 21
Single-Channel Monochrome On-Screen CS t CSS0 t CSH0 SCLK SDIN t DO4 SDOUT Figure 14. Detailed Serial-Interface Timing SCLK MSB SDIN A6 A5 ...
Page 22
Single-Channel Monochrome On-Screen Display with Integrated EEPROM SCLK MSB C C SDIN ...
Page 23
Single-Channel Monochrome On-Screen 4.75V SUPPLY VOLTAGE 0V XTAL OSCILLATOR SPI REGISTER RESET DISPLAY MEMORY CLEAR POWER POWER ON STABLE Figure 22. Power-On Reset Sequence The MAX7456 features a Software Reset bit (VM0[1]) that, when set high, clears the display memory ...
Page 24
Single-Channel Monochrome On-Screen Display with Integrated EEPROM MAX7456 Register Description Access to all MAX7456 operations, including display- memory and character-memory access, are through the SPI registers listed in Table 3. There is no direct access to the display and character ...
Page 25
Single-Channel Monochrome On-Screen Video Mode 0 Register (VM0) Write address = 00H, read address = 80H. Read/write access: unrestricted. To write to this register, the following conditions must be met: BIT DEFAULT 7 0 Don’t Care Video Standard Select 0 ...
Page 26
Single-Channel Monochrome On-Screen Display with Integrated EEPROM Video Mode 1 Register (VM1) Write address = 01H, read address = 81H. Read/write access: unrestricted. BIT DEFAULT Background Mode (See Table The Local Background Control bit (see DMM[5] and ...
Page 27
Single-Channel Monochrome On-Screen Vertical Offset Register (VOS) Write address = 03H, read address = 83H. Read/write access: unrestricted (Figure 23). BIT DEFAULT 000 Don’t Care Vertical Position Offset (OSD video can be vertically shifted into the vertical ...
Page 28
Single-Channel Monochrome On-Screen Display with Integrated EEPROM Display Memory Mode Register (DMM) Write address = 04H, read address = 84H. Read/write access: unrestricted. BIT DEFAULT 7 0 Don’t Care Operation Mode Selection 0 = 16-bit operation mode The 16-bit operation ...
Page 29
Single-Channel Monochrome On-Screen BIT DEFAULT Clear Display Memory 0 = Inactive 1 = Clear (fill all display memories with zeros) Note: This bit is automatically cleared after the operation is completed (the operation requires 20µs). The user does not need ...
Page 30
Single-Channel Monochrome On-Screen Display with Integrated EEPROM INVERT EXTERNAL SYNC MODE AND LOCAL BIT BACKGROUND CONTROL BIT (LBC DMM[ Figure 24. Character Attribute Bit Examples: Invert and Local Background Control 30 ______________________________________________________________________________________ INTERNAL SYNC MODE OR ...
Page 31
Single-Channel Monochrome On-Screen Table 4. Character Background Control BACKGROUND MODE, SYNC MODE External Internal X = Don’t care. Display Memory Address High Register Write address = 05H, read address = 85H. Read/write access: unrestricted. BIT DEFAULT 7–2 0000 00 Don’t ...
Page 32
Single-Channel Monochrome On-Screen Display with Integrated EEPROM Display Memory Data In Register (DMDI) Write address = 07H, read address = 87H. Read/write access: unrestricted. BIT DEFAULT Character Address or Character Attribute byte to be stored in the display memory. 8-Bit ...
Page 33
Single-Channel Monochrome On-Screen Character Memory Mode Register (CMM) Write address = 08H, read address = 88H. Read/write access: unrestricted. BIT DEFAULT Only whole characters (54 bytes) can be written to or read from the nonvolatile character memory (NVM) at one ...
Page 34
Single-Channel Monochrome On-Screen Display with Integrated EEPROM Character Memory Address High Register Write address = 09H, read address = 89H. Read/write access: unrestricted. BIT DEFAULT Character Memory Address Bits 7–0 0000 0000 These 8 bits point to a character in ...
Page 35
Single-Channel Monochrome On-Screen OSD Insertion Mux Register (OSDM) Write address = 0CH, read address = 8CH. Read/write access: unrestricted. BIT DEFAULT Don’t Care OSD Rise and Fall Time—typical transition times between adjacent OSD pixels 000: 20ns (maximum ...
Page 36
Single-Channel Monochrome On-Screen Display with Integrated EEPROM OSD Black Level Register (OSDBL) Write address = 6CH, read address = ECH. Read/write access: This register contains 4 factory-pre- set bits [3:0] that must not be changed. Therefore, BIT DEFAULT 7–5 000 ...
Page 37
Single-Channel Monochrome On-Screen Display Memory Data Out Register (DMDO) Read address = BxH. Read/write access: read only. BIT DEFAULT Character Address or Character Attribute byte to be read from the display memory. 8-Bit Operation Mode (DMM[6] = 1): If DMAH[1] ...
Page 38
Single-Channel Monochrome On-Screen Display with Integrated EEPROM Applications Information Character-Memory Operation Only whole characters (54 bytes of pixel data) can be written to or read from the NVM character memory at one time. This is done through the (64 byte) ...
Page 39
Single-Channel Monochrome On-Screen Writing the Character Address Byte to the Display Memory: 1) Write DMAH[ write a Character Address byte. 2) Write DMAH[ select the MSB and DMAL[7:0] = xxH to select the lower ...
Page 40
Single-Channel Monochrome On-Screen Display with Integrated EEPROM 4) Write DMM[5:3] = XXX to set the Local Background Control (LBC), Blink (BLK) and Invert (INV) attribute bits that will be applied to all characters. 5) Write CA data in the intended ...
Page 41
Single-Channel Monochrome On-Screen +5V 0.1μF 27MHz CS1 SDIN SCLK SDOUT +5V 0.1μF CLOCK DRIVER CS2 TO OTHER MAX7456 PARTS AS NEEDED Figure 25. Typical Multiple OSDs with Daisy-Chained Clock ______________________________________________________________________________________ Display with Integrated EEPROM + MAX7456 1 N.C. 28 N.C. ...
Page 42
Single-Channel Monochrome On-Screen Display with Integrated EEPROM Multiple OSDs with Common Clock Application The MAX7456 provides a TTL clock output (CLKOUT) capable of driving one CLKIN pin of another MAX7456. Two or more MAX7456 parts can be driven using an ...
Page 43
Single-Channel Monochrome On-Screen For the latest package outline information and land patterns www.maxim-ic.com/packages PACKAGE TYPE PACKAGE CODE 20 TSSOP-EP U28E-5 ______________________________________________________________________________________ Display with Integrated EEPROM DOCUMENT NO. 21-0108 Package Information 43 ...
Page 44
... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 44 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products ...