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参数资料
| 型号： | MK712SLF |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 18/21页 |
| 文件大小： | 0K |
| 描述： | IC TOUCH SCREEN CTLR 28-SOIC |
| 标准包装： | 26 |
| 类型： | 电阻 |
| 触摸面板接口： | 4 线 |
| 输入数/键： | 1 TSC |
| 分辨率（位）： | 12 b |
| 数据接口： | 并联 |
| 电源电压： | 3 V ~ 5.5 V |
| 电流 - 电源： | 5mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC |
| 包装： | 管件 |
| 其它名称： | 800-2266 MK712SLF-ND |
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| MK712SLFTR | 功能描述:IC TOUCH SCREEN CTLR 28-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 触摸屏控制器 系列:- 标准包装:96 系列:- 类型:- 触摸面板接口:- 输入数/键:- 分辨率（位）:- 评估套件:* 数据接口:- 数据速率/采样率 (SPS，BPS):- 电压基准:- 电源电压:- 电流 - 电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| MK712STR | 功能描述:IC TOUCH SCREEN CTLR 28-SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 触摸屏控制器 系列:- 标准包装:96 系列:- 类型:- 触摸面板接口:- 输入数/键:- 分辨率（位）:- 评估套件:* 数据接口:- 数据速率/采样率 (SPS，BPS):- 电压基准:- 电源电压:- 电流 - 电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| MK715 | 制造商:ICS 制造商全称:ICS 功能描述:Touch Screen Controller |
| MK7151F | 制造商:Ohmite Mfg Co 功能描述: |
| MK715R | 制造商:ICS 制造商全称:ICS 功能描述:Touch Screen Controller |
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