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參數(shù)資料
| 型號： | HL14203 |
| 廠商： | Hynix Semiconductor Inc. |
| 英文描述： | Hyundai Electronics Industries System IC Division |
| 中文描述： | 現(xiàn)代電子工業(yè)系統(tǒng)集成電路部 |
| 文件頁數(shù)： | 15/26頁 |
| 文件大?。?/td> | 421K |
| 代理商： | HL14203 |
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15
HL14203
P r e l i m i n a r y
Key input
(KS6 line)
Key Scan
CE
SI
SO
800T
800T
Write
address
Write
address
Read
address
Write
address
Read
address
Key data read request
Key data read
Key data read
Key data read request
“L” KS1
“L” KS2
“L” KS3
“L” KS4
“L” KS5
“H” KS6
KIN1
KIN2
KIN3
KIN4
KIN5
*)
When any one of these keys is pressed, the
oscillator on the OSC pin is started and the keys
are scanned.
*) These diodes are required to reliable recognize multiple key presses on the KS6 line when sleep mode state with only
KS6 high, as in the above example. That is, these diodes prevent incorrect operation due to sneak currents in the KS6
key scan output signal when keys on the KS1 to KS5 lines are pressed at the same time.
Multiple Key Presses
Although the HL14203 is capable of key scanning without inserting diodes for
dual key presses, triple key presses on the KIN1 to KIN5 input pin lines, or mult-
iple key presses on the KS1 to KS6 output pin lines, multiple presses other than
these cases may result in keys that were not pressed recognized as having been
pressed. Therefore, a diode must be inserted in series with each key. Application
that do not recognize multiple key presses of threes or keys should check the key
data for three or more 1 bits and ignore such data.
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相關(guān)代理商/技術(shù)參數(shù) |
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| HL1502Z | 制造商:DALE 功能描述:* 制造商:DLEVIS 功能描述: |
| HL-15-02Z | 制造商: 功能描述: 制造商:undefined 功能描述: |
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