欢迎访问ic37.com |
会员登录 免费注册
发布采购

ELM407SM 参数 Datasheet PDF下载

ELM407SM图片预览
型号: ELM407SM
PDF下载: 下载PDF文件 查看货源
内容描述: 旋转解码器 - 3线接口的4倍 [Rotary Decoder - 3 wire 4x Interface]
分类和应用: 解码器
文件页数/大小: 10 页 / 61 K
品牌: ELM [ ELM ELECTRONICS ]
 浏览型号ELM407SM的Datasheet PDF文件第2页浏览型号ELM407SM的Datasheet PDF文件第3页浏览型号ELM407SM的Datasheet PDF文件第4页浏览型号ELM407SM的Datasheet PDF文件第5页浏览型号ELM407SM的Datasheet PDF文件第6页浏览型号ELM407SM的Datasheet PDF文件第7页浏览型号ELM407SM的Datasheet PDF文件第8页浏览型号ELM407SM的Datasheet PDF文件第9页  
ELM407
Rotary Decoder - 3 wire 4x Interface
Description
The ELM407 is an 8 pin integrated circuit that is
used to convert the output from a rotary encoder into
three signals (chip select, clock and up/down) that
can be used to control various devices. The low
power CMOS technology used ensures that only a
very small current is required over the entire 2.0 to
5.5 volt operating range.
There is no need for external filtering or
debounce circuits with the ELM407, as this is all
performed within the integrated circuit. After
debouncing the encoder signals, the ELM407
determines the direction of shaft rotation, and then
generates the appropriate outputs. A write sequence
can also be generated if the Write Enable input is at
a high level when the outputs are generated.
The ELM407 provides 4x decoding of a rotary
encoder signal. If your application requires 2x
decoding, please see the ELM406 (it is identical to
the ELM407 in every respect, except that it provides
2x decoding).
Features
• Low power CMOS design
• Wide supply range – 2.0 to 5.5 volts
• Complete debouncing of the encoder inputs
• No external filtering needed
• 4x decoding
• Can generate a write sequence
• Startup delay timer
• High current drive outputs
Connection Diagram
PDIP and SOIC
(top view)
V
DD
A
1
2
3
4
8
7
6
5
V
SS
CS
Clk
U/D
Applications
• Digital audio potentiometer controls
• Variable voltage or temperature circuits
• Positioning controls
• Tuning circuits
B
Write
Enable
Block Diagram
V
DD
A
2
Debounce
Circuit
Direction
Decoding
Debounce
Circuit
Output
Logic
7
CS
Clk
U/D
6
V
DD
B
3
5
Rotary
Encoder
Write
Enable
4
ELM407DSA
Elm Electronics – Circuits for the Hobbyist
www.elmelectronics.com
1 of 10