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參數資料
| 型號： | LM8300IVA9 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Four Wire Resistive Touchscreen Controller with Brownout |
| 中文描述： | 四線電阻式觸摸屏控制器掉電 |
| 文件頁數： | 18/20頁 |
| 文件大小： | 327K |
| 代理商： | LM8300IVA9 |
14.0 Calibration
(Continued)
send a reply byte of $CC to the TS driver. At this point, the
TS driver should either notify the user to redo the calibration
point or automatically redo the calibration again. If the self-
test was successful, the device will send a reply byte of $CB
to the TS driver.
14.3 CALIBRATION PROCEDURES WITH
COORDINATES CHECKING DISABLED
To do TS calibration with coordinates checking disabled, first
ensure the Calibration Coordinates Checking is disabled on
the device. This can be accomplished by sending a com-
mand byte of $B1 (Read Parameters command) and check-
ing the 5th bit of the 12th reply byte is not set. Alternatively,
if the device is set to Calibration Coordinates Checking
disabled as default, this step can be skipped.
The TS driver sends the command byte to do calibration
($BD). The TS driver should wait for the reply bytes and
15.0 Revision History
ensure it is the same command bytes it sent. The device
waits for a touch to be detected on the panel. Once a touch
is detected, the device save the values into the internal flash
and send a reply byte of $C4 to the TS driver. The TS driver
can now send a command byte to do the next calibration
point. Since the Calibration Checking is disabled, the TS
driver should ensure the calibration point is within the range
of the calibration cross.
Once all the calibration points are done, the device does a
self-test. If the self-test was not successful, the device will
send a reply byte of $CC to the TS driver. At this point, the
TS driver should either notify the user to redo the calibration
point or automatically redo the calibration again. If the self-
test was successful, the device will send a reply byte of $CB
to the TS driver.
Date
Section
Summary of Changes
October 2002
May 2003
Initial release.
Removed LM8400 part.
Updated section to reflect the change and made external reset circuitry
optional.
Added command byte $A5
Updated controller reply bytes
Added description for command byte $A5
All sections
Brownout Reset
July 2003
Advanced Command Bytes
Descriptions
December
2003
Advanced Command Bytes
Descriptions
L
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相關代理商/技術參數 |
參數描述 |
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| LM8300-REF-01 | 功能描述:BOARD EVALUATION LM8300 RoHS:否 類別:編程器，開發系統 >> 評估演示板和套件 系列:- 標準包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| LM8305 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:STN LCD Display Bias Voltage source |
| LM8305M | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:STN LCD Display Bias Voltage source |
| LM8305M-1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM8305MX-1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
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