MAX7456EUI+T Maxim Integrated Products, MAX7456EUI+T Datasheet - Page 25

• Manufacturer Part Number: MAX7456EUI+T
• Description: IC DISPLAY 1CH W/EEPROM 28TSSOP
• Manufacturer: Maxim Integrated Products
• Type: OSD (On-Screen Display) Video Generatorr

Specifications of MAX7456EUI+T

• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Configuration: -
• Lead Free Status / Rohs Status: Details

Write address = 00H, read address = 80H.
Read/write access: unrestricted.
To write to this register, the following conditions must
be met:
X = Don’t care.
BIT
5, 4
7
6
3
2
1
0
DEFAULT
Video Mode 0 Register (VM0)
______________________________________________________________________________________
00
0
0
0
0
0
0
Single-Channel Monochrome On-Screen
Don’t Care
Video Standard Select
0 = NTSC
1 = PAL
Sync Select Mode (Table 1)
0x = Autosync select (external sync when LOS = 0 and internal sync when LOS = 1)
10 = External
11 = Internal
Enable Display of OSD Image
0 = Off
1 = On
Vertical Synchronization of On-Screen Data
0 = Enable on-screen display immediately
1 = Enable on-screen display at the next VSYNC
Software Reset Bit
When this bit is set, all registers are set to their default values and the display memory is cleared.
When a stable 27MHz clock is present, this bit is automatically cleared internally after typically
100µs. The user does not need to write a 0 afterwards. SPI operations should not be performed
during this time or unpredictable results may occur. The status of the bit can be checked by
reading this register after typically 100µs. This register is not accessible for writing until the display
memory clear operation is finished (typically 20µs).
Video Buffer Enable
0 = Enable
1 = Disable (VOUT is high impedance)
Display with Integrated EEPROM
1) STAT[5] = 0, the character memory (NVM) is not
2) DMM[2] = 0, the display memory (SRAM) is not
busy.
in the process of being cleared.
FUNCTION
25