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參數(shù)資料
| 型號： | MK712RLFTR |
| 廠商： | IDT, Integrated Device Technology Inc |
| 文件頁數(shù)： | 18/21頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TOUCH SCREEN CTLR 28-SSOP |
| 標準包裝： | 2,500 |
| 類型： | 電阻 |
| 觸摸面板接口： | 4 線 |
| 輸入數(shù)/鍵： | 1 TSC |
| 分辨率（位）： | 12 b |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 電源電壓： | 3 V ~ 5.5 V |
| 電流 - 電源： | 5mA |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 28-QSOP |
| 包裝： | 帶卷 (TR) |
MK712
TOUCH SCREEN CONTROLLER
TOUCH SCREEN CONTROL
IDT TOUCH SCREEN CONTROLLER
6
MK712
REV N 051310
Recommended Circuit
Pen Bounce
When the screen is untouched, the Y plate is driven high and the X plate is driven low. When the screen is touched,
the X plate is pulled high, which is detected by the MK712. This initiates a conversion (as long as periodic
conversions are enabled). Some de-bounce is provided by the time constant of the screen decoupling capacitors
combined with the screen resistance. However, once conversions have started, pen bounce will not be detected
until after both the X and Y points have been taken.
If the pen is lifted during a conversion, this will also not be detected until the conversion is complete. This is typically
indicated by a point with the correct Y coordinates, but minimum (for that screen) X coordinates.
Screen Decoupling
The component values suggested should give excellent results. However, for screens with a high resistance
operating at a high conversion rate, extra interrupts may be issued. This is because the time constant of the screen
decoupling capacitors and screen resistance is high, resulting in the screen appearing to be untouched and then
touched between conversions. These extra interrupts can be eliminated by reducing the size of the screen
decoupling capacitors on pins XH, XL, YH, and YL. This will, however, slightly reduce the noise rejection, which
could decrease the accuracy of the conversion.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MK712RTR | 功能描述:IC TOUCH SCREEN CTLR 28-SSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 觸摸屏控制器 系列:- 標準包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數(shù)/鍵:- 分辨率（位）:- 評估套件:* 數(shù)據(jù)接口:- 數(shù)據(jù)速率/采樣率 (SPS，BPS):- 電壓基準:- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| MK712RWLF | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:TOUCH SCREEN CONTROLLER |
| MK712RWLFTR | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:TOUCH SCREEN CONTROLLER |
| MK712S | 功能描述:IC TOUCH SCREEN CTLR 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 觸摸屏控制器 系列:- 標準包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數(shù)/鍵:- 分辨率（位）:- 評估套件:* 數(shù)據(jù)接口:- 數(shù)據(jù)速率/采樣率 (SPS，BPS):- 電壓基準:- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| MK712SI | 制造商:ICS 制造商全稱:ICS 功能描述:Touch Screen Controller |
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