MAX7456EUI+T Maxim Integrated Products, MAX7456EUI+T Datasheet - Page 34

• 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

Single-Channel Monochrome On-Screen
Display with Integrated EEPROM
Write address = 09H, read address = 89H.
Read/write access: unrestricted.
Write address = 0AH, read address = 8AH.
Read/write access: unrestricted.
Write address = 0BH, read address = 8BH.
Read/write access: unrestricted.
NA = Not applicable.
34
Character Memory Data In Register (CMDI)
Character Memory Address High Register
Character Memory Address Low Register
7, 6
5, 4
3, 2
1, 0
7, 6
BIT
BIT
5–0
BIT
7–0
______________________________________________________________________________________
DEFAULT
DEFAULT
0000 0000
DEFAULT
00 0000
NA
NA
NA
NA
00
Leftmost pixel. 00 = Black, 10 = White, 01 or 11 = Transparent (see Figure 11)
Left center pixel. 00 = Black, 10 = White, 01 or 11 = Transparent (see Figure 11)
Right center pixel. 00 = Black, 10 = White, 01 or 11 = Transparent (see Figure 11)
Rightmost pixel. 00 = Black, 10 = White, 01 or 11 = Transparent (see Figure 11)
Character Memory Address Bits
These 8 bits point to a character in the character memory (256 characters total in NVM) (Figures 10
and 12).
Don’t Care
Character Memory Address Bits
These 6 bits point to one of the 64 bytes (only 54 used) that represent a 4-pixel group in the
character (Figures 10 and 11).
(CMAH)
(CMAL)
To write to this register, the following conditions must
be met:
To write to this register, the following conditions must
be met:
To write to this register, the following conditions must
be met:
1) STAT[5] = 0, the character memory (NVM) is not
2) VM0[3] = 0, the OSD is disabled.
1) STAT[5] = 0, the character memory (NVM) is not
2) VM0[3] = 0, the OSD is disabled.
1) STAT[5] = 0, the character memory (NVM) is not
2) VM0[3] = 0, the OSD is disabled.
busy.
busy.
busy.
FUNCTION
FUNCTION
FUNCTION