MAX7456EUI+ Maxim Integrated Products, MAX7456EUI+ Datasheet - Page 9

• Manufacturer Part Number: MAX7456EUI+
• Description: IC ON-SCREEN DISPLAY 28-TSSOP
• Manufacturer: Maxim Integrated Products
• Type: OSD (On-Screen Display) Video Generatorr

Specifications of MAX7456EUI+

• Applications: Security Systems, Video Routing
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP
• Current - Supply: 58mA
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Interface: SPI Serial
• Display Type: OSD
• Digits Or Characters: 256 Characters
• Maximum Clock Frequency: 27 MHz
• Operating Supply Voltage: 5 V
• Maximum Power Dissipation: 2162 mW
• Maximum Operating Temperature: + 85 C
• Maximum Supply Current: 25 mA
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Configuration: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

1, 2, 13–16,
27, 28
PIN
10
11
12
17
18
19
20
21
22
23
24
25
26
—
3
4
5
6
7
8
9
CLKOUT
SDOUT
HSYNC
VSYNC
RESET
NAME
DGND
CLKIN
AGND
PGND
DVDD
AVDD
PVDD
VOUT
SCLK
SDIN
SAG
N.C.
LOS
XFB
VIN
CS
EP
_______________________________________________________________________________________
Single-Channel Monochrome On-Screen
No Connection. Not internally connected.
Digital Power-Supply Input. Bypass to DGND with a 0.1µF capacitor.
Digital Ground
Crystal Connection 1. Connect a parallel resonant, fundamental mode crystal between CLKIN and XFB
for use as a crystal oscillator, or drive CLKIN directly with a 27MHz system reference clock.
Crystal Connection 2. Connect a parallel resonant, fundamental mode crystal between CLKIN and XFB
for use as a crystal oscillator, or leave XFB unconnected when driving CLKIN with a 27MHz system
reference clock.
Clock Output. 27MHz logic-level output system clock.
Active-Low Chip-Select Input. SDOUT goes high impedance when CS is high.
Serial Data Input. Data is clocked in at rising edge of SCLK.
Serial Clock Input. Clocks data into SDIN and out of SDOUT. Duty cycle must be between 40% and 60%.
Serial Data Output. Data is clocked out at the falling edge of SCLK. High impedance when CS is high.
Loss-of-Sync Output (Open-Drain). LOS goes high when the VIN sync pulse is lost for 32 consecutive
lines. LOS goes low when 32 consecutive valid sync pulses are received. Connect to a 1kΩ pullup
resistor to DVDD or another positive supply voltage suitable for the receiving device.
Vertical Sync Output (Open-Drain). VSYNC goes low following the video input’s vertical sync interval.
VSYNC is either recovered from VIN or internally generated when in internal sync mode. Connect to a
1kΩ pullup resistor to DVDD or another positive supply voltage suitable for the receiving device.
Horizontal Sync Output (Open-Drain). HSYNC goes low following the video input’s horizontal sync
interval. HSYNC is either recovered from VIN or internally generated when in internal sync mode. Connect
to a 1kΩ pullup resistor to DVDD or another positive supply voltage suitable for the receiving device.
System Reset Input. The minimum RESET pulse width is 50ms. All SPI registers are reset to their default
values after 100µs following the rising edge of RESET. These registers are not accessible for reading or
writing during that time. The display memory is reset to its default value of 00H in all locations after 20µs
following the rising edge of RESET.
Analog Ground
Analog Power-Supply Input. Bypass to AGND with a 0.1µF capacitor.
PAL or NTSC CVBS Video Input
Driver Ground. Connect to AGND at a single point.
Driver Power-Supply Input. Bypass to PGND with a 0.1µF capacitor.
Sag Correction Input. Connect to VOUT if not used. See Figure 1b.
Video Output
Exposed Pad. Internally connected to AGND. Connect EP to the AGND plane for improved heat
dissipation. Do not use EP as the only ground connection.
Display with Integrated EEPROM
FUNCTION
Pin Description
9