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参数资料
| 型号： | LM8300IMT9/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO48 |
| 封装： | TSSOP-48 |
| 文件页数： | 10/20页 |
| 文件大小： | 327K |
| 代理商： | LM8300IMT9/NOPB |
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
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.
15.0 Revision History
Date
Section
Summary of Changes
October 2002
Initial release.
May 2003
All sections
Removed LM8400 part.
Brownout Reset
Updated section to reflect the change and made external reset circuitry
optional.
July 2003
Advanced Command Bytes
Descriptions
Added command byte $A5
Updated controller reply bytes
December
2003
Advanced Command Bytes
Descriptions
Added description for command byte $A5
LM8300/LM8500
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM8300IVA9 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Four Wire Resistive Touchscreen Controller with Brownout |
| LM8300-REF-01 | 功能描述:BOARD EVALUATION LM8300 RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
| LM8305 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:STN LCD Display Bias Voltage source |
| LM8305M | 制造商:NSC 制造商全称: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 |
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