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参数资料
| 型号： | ICM7244AIM44Z |
| 厂商： | Intersil |
| 文件页数： | 12/13页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR 16 SEG 8 CHAR 44MQFP |
| 标准包装： | 96 |
| 显示器类型： | LED |
| 配置： | 16 段 |
| 接口： | 串行 |
| 数字或字符： | 8 个字符 |
| 电流 - 电源： | 180mA |
| 电源电压： | 4.75 V ~ 5.25 V |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-QFP |
| 供应商设备封装： | 44-MQFP（10x10） |
| 包装： | 托盘 |
| 产品目录页面： | 1240 (CN2011-ZH PDF) |
ICM7244
CHARacter drive lines ( Figure 3). An inter-character
blanking signal is derived from the pre-divider. An
additional comparator on the OSC/OFF input detects a
level lower than the relaxation oscillator's range, and
blanks the display, disables the DISPlay FULL output (if
active), and clears the pre-divider and Multiplex Counter.
This puts the circuit in a low-power-dissipation mode in
which all outputs are effectively open circuits, except for
parasitic diodes to the supply lines. Thus a display
connected to the output may be driven by another circuit
(including another ICM7244) without driver conflicts.
Display Output
The output of the Multiplex Counter is decoded and
multiplexed into the address input of the Data Memory,
except during WR operations (in Sequential Access mode,
with SEN high and DISPlay FULL low), when it scans
through the display data. The address decoder also drives
12
the CHARacter outputs, except during the inter-character
blanking interval (nominally about 5μs). Each CHARacter
output lasts nominally about 300μs, and is repeated
nominally every 2.5ms, i.e., at a 400Hz rate (times are
based on internal oscillator without external capacitor).
The 6 bits read from the Data Memory are decoded in the
ROM to the 17 segment signals, which drive the SEGment
outputs. Both CHARacter and SEGment outputs are
disabled during WR operations (with SEN high and
DISPlay FULL Low for Sequential Access mode). The
outputs may also be disabled by pulling OSC/OFF low.
The decode pattern from 6 bits to 17 segments is done by a
ROM pattern according to the ASCll font shown. Custom
decode patterns can be arranged, within these limitations,
by consultation with the factory.
FN6675.1
January 22, 2009
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICM7244AIM44ZT | 功能描述:LED显示驱动器 W/ANNEAL 8-CHAR UP LED DRVR W/ON RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| ICM7245 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:N-CHANNEL JFET |
| ICM7245A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:TIMEKEEPING DTMF CIRCUITS |
| ICM7245AIM44Z | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:8-Character, 16-Segment, Microprocessor Compatible, LED Display Decoder Driver |
| ICM7245AIM44ZT | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:8-Character, 16-Segment, Microprocessor Compatible, LED Display Decoder Driver |
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