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MAX6853

更新时间： 2024-11-19 23:51:51
品牌 Logo 应用领域
美信 - MAXIM 显示控制器
页数 文件大小 规格书
35页 487K
描述
2-Wire Interfaced.5 x 7 Matrix Vacuum-Fluorescent Display Controller

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MAX6853 数据手册

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19-2673; Rev 0; 10/02  
2-Wire Interfaced, 5 ✕ 7 Matrix Vacuum-  
Fluorescent Display Controller  
General Description  
Features  
o 400kbps 2-Wire I C-Compatible Interface  
o 2.7V to 3.6V Operation  
2
The MAX6853 compact vacuum-fluorescent display  
(VFD) controller provides microprocessors with the mul-  
tiplex timing for 5 x 7 matrix VFD displays up to 96  
characters and controls industry-standard, shift-regis-  
ter, high-voltage grid/anode VFD tube drivers. The  
device supports display tubes using either one or two  
digits per grid, as well as universal displays. The  
MAX6853 provides an internal crosspoint switch to  
match any tube-driver shift-register grid/anode order,  
and is compatible with both chip-in-glass and external  
tube drivers. Hardware is included to simplify the gen-  
eration of cathode bias and filament supplies and to pro-  
vide up to five logic outputs, including a buzzer driver.  
o Controls Up to 96 5 x 7 Matrix Characters  
o One Digit and Two Digits per Grid and Universal  
Displays Supported  
o 16-Step Digital Brightness Control  
o Built-In ASCII 104-Character Font  
o 24 User-Definable Characters  
o Up to Four Annunciators per Grid with Automatic  
Blinking Control  
o Separate Cursor Control with Automatic Blinking  
o Filament Drive Full-Bridge Waveform Synthesis  
The MAX6853 includes an ASCII 104-character font,  
multiplex scan circuitry, and static RAM that stores  
digit, cursor, and annunciator data, as well as font data  
for 24 user-definable characters. An internal 16-step  
digital brightness control adjusts the display intensity.  
The device also includes separate annunciator and cur-  
sor control with automatic blinking, as well as a low-  
power shutdown mode.  
o Buzzer Tone Generator with Single-Ended or  
Push-Pull Driver  
o Up to Five General-Purpose Logic Outputs  
o 9µA Low-Power Shutdown (Data Retained)  
o 16-Pin QSOP Package  
The MAX6853 provides timing to generate the PWM  
waveforms to drive the tube filament from a DC supply.  
The filament drive is synchronized to the display multi-  
plexing to eliminate beat artifacts.  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
For an SPI™-compatible version, refer to the MAX6852  
data sheet.  
MAX6853AEE  
-40°C to +125°C  
16 QSOP  
Typical Application Circuit  
Applications  
Display Modules  
Bar Graph Displays  
Industrial Controllers  
CHIP-ON-GLASS VFD  
Retail POS Displays  
VFD SUPPLY VOLTAGE  
Weight and Tare  
Displays  
0.1µF  
V+  
MICROCONTROLLER  
VFCLK  
VFDOUT  
VFLOAD  
MAX6853  
SDA  
SCL  
SDA  
SCL  
AD0  
VFBLANK  
OSC2  
Pin Configuration and Functional Diagram appear at end of  
data sheet.  
OSC1  
GND  
SPI is a trademark of Motorola, Inc.  
10kΩ  
56pF  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
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