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參數資料
| 型號： | LM8300ILQ9 |
| 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： | 16/20頁 |
| 文件大小： | 327K |
| 代理商： | LM8300ILQ9 |
14.0 Calibration
(Continued)
in
Table 3. Two Points Calibration
,
Table 4. Five Points
Calibration
, and
Table 5. Thirteen Points Calibration
respec-
tively.
TABLE 3. Two Points Calibration
Calibration point Theoretical X-value Theoretical Y-value
1
127
2
895
127
895
TABLE 4. Five Points Calibration
Calibration point Theoretical X-value Theoretical Y-value
1
127
2
895
3
127
4
511
5
895
127
895
895
511
127
TABLE 5. Thirteen Points Calibration
Calibration point Theoretical X-value Theoretical Y-value
1
127
2
895
3
127
4
511
5
895
6
895
7
511
8
127
9
511
10
623
11
623
12
319
13
319
127
895
895
511
127
511
895
511
127
319
623
623
319
14.1 GENERAL CALIBRATION PROCEDURES
Calibration is invoked by sending a command byte of $BD
followed by a command byte to the device. The command
byte is broken into two parts: the high nibble states the
number of calibration points to performs and the lower nibble
states the active calibration point. For example, to do the first
calibration point for the two point calibration, the command
bytes of $BD and $11 are sent to the device. The device then
echos $BD and $11 back to the TS driver and waits for a
touch on the panel. When a touch is detected, the device
checks to see if the point is within the specified parameters
if the calibration point checking is enabled. If the calibration
point checking is disabled, the device will send a $C8 for OK
byte to the TS driver regardless of where the touch was
detected. This calibration point checking can be enabled or
disabled by sending a command byte of $A5 to the device.
When all the calibration points are done, the device will do a
self-test and send a command of $CB for OK or a command
of $CC for failed. If a $CC is received, the TS driver should
issue a warning stating the calibration was not done properly
and redo the calibration procedures. The flowchart for the
calibration procedures is shown in
Figure 8
.
20037207
FIGURE 5. Two Points Calibration Mapping
20037208
FIGURE 6. Five Points Calibration Mapping
20037209
FIGURE 7. Thirteen Points Calibration Mapping
L
www.national.com
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相關代理商/技術參數 |
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| LM8300IMT9 | 功能描述:IC TOUCHSCREEN CONTROLLR 48TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 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/鍵:- 分辨率（位）:- 評估套件:* 數據接口:- 數據速率/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) |
| LM8300IMT9/NOPB | 制造商:Texas Instruments 功能描述:Four Wire Resistive Touchscreen Controller With Brownout 48-Pin TSSOP |
| LM8300IMT9B | 功能描述:觸摸屏轉換器和控制器 RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| LM8300IMT9B/63 | 功能描述:觸摸屏轉換器和控制器 RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| LM8300IMT9B/63SN | 功能描述:觸摸屏轉換器和控制器 RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
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