参数资料
型号: MAX7456EUI+T
厂商: Maxim Integrated Products
文件页数: 15/44页
文件大小: 0K
描述: IC DISPLAY 1CH W/EEPROM 28TSSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
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: 带卷 (TR)
Resets
Power-On Reset
The MAX7456’s power-on reset circuitry (POR) pro-
vides an internal reset signal that is active after the sup-
ply voltage has stabilized. The internal reset signal
resets all registers to their default values and clears the
display memory. The register reset process requires
100s, and to avoid unexpected results, read/write
activity is not allowed during this interval. The display
memory is reset, and the OSD is enabled typically
50ms after the supply voltage has stabilized and a sta-
ble 27MHz clock is available. The user should avoid
SPI operations during this time to avoid unexpected
results. After 50ms (typical), STAT[6] can be polled to
verify that the reset sequence is complete (Figure 22).
Single-Channel Monochrome On-Screen
Display with Integrated EEPROM
CS
SCLK
SDIN
MSB
LSB
12
3
4
5
6
7
8
9
10 11 12 13 14 15 16
0
00
011
1
C
A
7
C
A
6
C
A
5
C
A
4
C
A
3
C
A
2
C
A
1
C
A
0
Figure 19. Writing Character Address Byte in 8-Bit and 16-Bit
Operation Modes
CS
SCLK
SDIN
MSB
12
3
4
5
6
7
8
12
3
4
5
6
7
8
9
10 11 12 13 14 15 16
C
A
7
C
A
6
C
A
5
C
A
4
C
A
3
C
A
2
C
A
1
C
A
0
X
10
11
X
SDOUT
LSB
MSB
L
B
C
B
L
K
I
N
V
0
00
LSB
Figure 20. Reading Character Address and Character Attribute Bytes in 16-Bit Operation Mode
CS
SCLK
SDIN
MSB
LSB
12
3
4
5
6
7
8
D7 D6 D5 D4 D3 D2 D1 D0
Figure 21. Write Operation in Auto-Increment Mode
MAX7456
22
Maxim Integrated
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