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參數資料
| 型號： | HL15604 |
| 廠商： | Hynix Semiconductor Inc. |
| 英文描述： | Hyundai Electronics Industries System IC Division |
| 中文描述： | 現代電子工業系統集成電路部 |
| 文件頁數： | 13/26頁 |
| 文件大小： | 435K |
| 代理商： | HL15604 |
13
HL15604
8. Key Scan Function
1) Key Scan Timing
The key scan period is 384T. The HL14104 scans the key twice and determines
that a key has been pressed when the key data agrees. It outputs a key data read
request 800T after starting a key scan. If the key data does not agree and a key
was pressed at that point, it scans the key again.Thus the HL14104 cannot detect
a key press shorter than 800T.
768T
KS1
KS2
KS3
KS4
KS5
KS6
1
2
3
4
5
6
1
2
3
4
5
6
Key on
*)
*)
*)
*)
*)
*)
*)
*)
*)
*)
*)
*)
*) In sleep mode the high / low state of these pins is determined by the S0,S1 bits in the control data.
Key scan output signals are not output from pins that are set low.
2) In normal mode
The pins KS1 to KS6 are set high.
When a key is pressed a key scan is started and the keys are scanned until all
keys are released. Multiple key presses are recognized by determining whether
multiple key data bits are set.
If a key is pressed for longer than 800T ( where T=1/fosc ) the HL14104
outputs a key data read request (a low level on SO pin) to the controller. The
controller acknowledges this request and reads the key data. However, if CE
is high during a serial data transfer, SO will be set high.
After the controller reads the key data, the key data read requests is cleared (
SO pin is set high ) and the HL14104 performs another key scan. Also note
that SO pin, being an open-drain output, requires a pull-up resistor.
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PDF描述 |
|---|---|
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相關代理商/技術參數 |
參數描述 |
|---|---|
| HL15703 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:Hyundai Electronics Industries System IC Division |
| HL16 AC76 WAF | 制造商:ON Semiconductor 功能描述: |
| HL16004Z3K800FJ | 功能描述:線繞電阻器 - 底架安裝 160watts 3.8Kohms 1% tolerance RoHS:否 制造商:Vishay/Dale 電阻:7 Ohms 容差:1 % 功率額定值:100 W 溫度系數:50 PPM / C 系列:RH 工作溫度范圍:- 55 C to + 250 C 尺寸:46.02 mm Dia. x 46.02 mm W x 88.9 mm L x 44.45 mm H 封裝:Bulk 產品:Power Resistors Wirewound Aluminum Housed |
| HL16004Z3R800FJ | 功能描述:線繞電阻器 - 底架安裝 160watt 3.8ohms 1% RoHS:否 制造商:Vishay/Dale 電阻:7 Ohms 容差:1 % 功率額定值:100 W 溫度系數:50 PPM / C 系列:RH 工作溫度范圍:- 55 C to + 250 C 尺寸:46.02 mm Dia. x 46.02 mm W x 88.9 mm L x 44.45 mm H 封裝:Bulk 產品:Power Resistors Wirewound Aluminum Housed |
| HL16007Z100K0JJ | 功能描述:線繞電阻器 - 底架安裝 160watts 100Kohms 5% RoHS:否 制造商:Vishay/Dale 電阻:7 Ohms 容差:1 % 功率額定值:100 W 溫度系數:50 PPM / C 系列:RH 工作溫度范圍:- 55 C to + 250 C 尺寸:46.02 mm Dia. x 46.02 mm W x 88.9 mm L x 44.45 mm H 封裝:Bulk 產品:Power Resistors Wirewound Aluminum Housed |
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