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| 型号： | MAX7456EUI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 35/44页 |
| 文件大小： | 0K |
| 描述： | IC ON-SCREEN DISPLAY 28-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | OSD（屏幕显示）视频发生器 |
| 应用： | 安全系统，视频路由 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
| 包装： | 管件 |
| 产品目录页面： | 1424 (CN2011-ZH PDF) |
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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 character order to dis-
play text on the screen. It will be stored along with a
Character Attribute byte derived from DMM[5:3].
See Figure 19. This is the single byte operation. The
DMDI[7:0] address is automatically set by auto-
increment mode. The display memory address is
automatically incremented following the write opera-
tion until the final display memory address is
reached.
6) Write CA = FFh to terminate the auto-increment
mode.
Note: The character stored at CA[7:0] = FFh is not avail-
able for use in auto-increment mode. Read operation is
not possible before auto-increment mode is terminated.
Steps for Reading from Display
Memory in 8-Bit Mode
1) Write DMM[6] = 1 to select the 8-bit operation mode.
2) Write DMAH[1] = 0 to read the Character Address
byte or DMAH[1] = 1 to read the Character Attribute
byte.
3) Write to DMAH[0] to select the MSB of the address
where data must be read from (Figure 10).
4) Write to DMAL[7:0] to select all the lower order bits,
except for the MSB, of the address where data must
be read from (Figure 10).
5) Read DMDO[7:0] to read the data from the selected
location in the display memory (Figure 10).
Steps for Reading from Display
Memory in 16-Bit Mode
1) Write DMM[6] = 0 to select the 16-bit operation
mode.
2) Write DMAH[0] = x to select the MSB and
DMAL[7:0] = xxH to select the lower order bits of
the address where the character data is to be read.
This address determines the location of the charac-
ter on the display (see Figure 10).
3) Read DMDO[15:0] to read the Character Address
byte and the Character Attribute byte from the
selected location in the display memory. The first
data byte is the Character Address (CA[7:0]), and
the second byte contains the Character Attribute
bits (Figure 20). Note that the bit positions of the
Character Attribute byte when read, differ from
when they are written. See the
Display Memory Data
Out Register (DMDO) section and Figure 20 for a
description of the bit locations of the attribute bits
when reading.
Note: If an internal display-memory read request
occurs simultaneously with an SPI display-memory
operation, the internal read request is ignored, and the
display of that character, during that field time, may
appear to momentarily break up. See the
Synchronous
OSD Updates section.
Synchronous OSD Updates
The display of a character may momentarily appear to
break up if an internal display-memory read request
occurs simultaneously with an SPI display-memory
operation. Momentary breakup of the OSD image can
be prevented by writing to the display memory during
the vertical blanking interval. This can be achieved by
using VSYNC as an interrupt to the host processor to
initiate writing to the display memory. Alternatively, the
OSD image can be synchronously disabled before writ-
ing to the display memory and synchronously re-
enabled afterwards (see VM0[3:2]).
Single-Channel Monochrome On-Screen
Display with Integrated EEPROM
Table 5. Display-Memory Access Modes and SPI Operations
OPERATING
MODE
AUTO-INCREMENT
MODE DISABLED
DMM[0] = 0
No. OF READ
OPERATIONS
No. OF WRITE
OPERATIONS
AUTO-INCREMENT
MODE ENABLED
DMM[0] = 1
No. OF WRITE
OPERATIONS
One-time setup
2
1
One-time setup
6
16-Bit Mode
DMM[6] = 0
Per character
3
Per character
1
One-time setup
1
One-time setup
6
8-Bit Mode
DMM[6] = 1
Per character
6
Per character
1
MAX7456
40
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7456EUI/GH9 | 制造商:Maxim Integrated Products 功能描述:SINGLE-CHANNEL MONOCHROME ON-SCREEN DISPLAY - Rail/Tube |
| MAX7456EUI+ | 功能描述:视频 IC Monochrome On Scrn Display Generator RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| MAX7456EUI+T | 功能描述:视频 IC Monochrome On Scrn Display Generator RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| MAX7456EUI+W | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX7456EVKIT | 功能描述:显示开发工具 RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V |
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