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參數(shù)資料
| 型號： | TSC2200IPW |
| 英文描述： | PDA ANALOG INTERFACE CIRCUIT |
| 中文描述： | 掌上電腦模擬接口電路 |
| 文件頁數(shù)： | 27/40頁 |
| 文件大?。?/td> | 645K |
| 代理商： | TSC2200IPW |
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www.ti.com
TSC2200
SBAS191F
FIGURE 15. X-Coordinate Reading Controlled by Host.
Screen
Touch
Issue Interrupt
PENIRQ
Go to Host-Controlled
Conversion
Host-Controlled
X-Coordinate
No
Start Clock
Reset PENIRQ
No
Is Panel Voltage
Stabilization Done
Turn On Drivers: Y+, Y
–
Turn On Drivers: Y+, Y
–
No
Yes
Yes
Yes
No
Is Data
Averaging Done
Convert X-Coordinates
Start Clock
Power Up A/D Converter
Is PSM = 1
Are Drivers On
Done
Done
Host Writes A/D
Converter
Control Register
Host Writes A/D
Converter-
Control Register
Done
Power Down A/D Converter
Turn Off Clock
Issue Data Available
Store X-Coordinates
in X-Register
Conversion Controlled by the Host
In this mode, the TSC2200 will detect when the touch panel
is touched and cause the
PENIRQ
line to go LOW. The host
will recognize the interrupt request. Instead of starting a
sequence in the TSC2200 which then reads each coordinate
in turn, the host now must control all aspects of the conver-
sion. Generally, upon receiving the interrupt request, the host
will turn on the Y-drivers. After waiting for the settling time,
the host will then address the TSC2200 again, this time
requesting an X-coordinate conversion.
The process is then repeated for Y- and Z-coordinates. The
processes are outlined in Figures 15 through 17.
The time needed to convert any single coordinate under host
control (not including the time needed to send the command
over the SPI bus) is given by:
(5)
t
2.125 s + t
N
N
1
f
s
COORDINATE
PVS
AVG
BITS
CONV
=
+
+
μ
4 4
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相關代理商/技術參數(shù) |
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|---|---|
| TSC2200IPWG4 | 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
| TSC2200IPWR | 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
| TSC2200IPWRG4 | 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
| TSC2200IRHB | 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
| TSC2200IRHBG4 | 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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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