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參數(shù)資料
| 型號(hào)： | ML9204 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | 5 X 7 Dot Character ?24-Digit ?2-Line Display Controller/Driver with Character RAM (Built-in Key Scan) |
| 中文描述： | 5 × 7點(diǎn)陣字符？24位數(shù)字？2行顯示控制器/驅(qū)動(dòng)器的字符內(nèi)存（內(nèi)置鍵掃描） |
| 文件頁數(shù)： | 34/41頁 |
| 文件大?。?/td> | 288K |
| 代理商： | ML9204 |
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PEDL9204-02
OKI Semiconductor
ML9204-xx
34/41
The rotary encoder switch function
As Figure 1 shows, the rotary encoder switch circuit is consisted of Phase detection, Interrupt generation,
Up/down counter, Direction latch and Parallel-in serial-out shift register.
The Rotary Encoder Switch Circuit
1. Phase detection
1-1. Clockwise rotation
The input A and B have a chattering absorption circuit of 256
μ
s period. When signal A and B input as shown
below, the phase detection circuit outputs UP signal after the chattering absorption period. At this time, the
output INT also goes to high level, so this signal can be used as an interrupt. The INT stays High level until the
keyscan stop mode is selected.
A
UP (internal)
B
INT
chattering absorption time
The Input and Output Timing in the Case of Clockwise Rotation
Phase Detection
UP
DOWN
B
Q3 Q2 Q1
A
UP/DOWN Counter
P-in/S-out Shift Register
R1
Direction Latch
Interrupt
Generation
for INT
Output data
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| ML9204-xx | 5 X 7 Dot Character ?24-Digit ?2-Line Display Controller/Driver with Character RAM (Built-in Key Scan) |
| ML9205-01 | 5 x 7 Dot Character x 16-Digit Display Controller/Driver with Character RAM |
| ML9206 | 5 x 7 Dot Character x 16-Digit Display Controller/Driver with Character RAM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ML9204-XX | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:5 X 7 Dot Character ?24-Digit ?2-Line Display Controller/Driver with Character RAM (Built-in Key Scan) |
| ML9205-01 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:5 x 7 Dot Character x 16-Digit Display Controller/Driver with Character RAM |
| ML9206 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:5 x 7 Dot Character x 16-Digit Display Controller/Driver with Character RAM |
| ML9206-XX | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:5 x 7 Dot Character x 16-Digit Display Controller/Driver with Character RAM |
| ML9207 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:5 X 7 Dot Character × 24-Digit Display Controller/Driver with Character RAM |
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