- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98303 > TSC2301IZQZ (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PBGA120 PDF資料下載
參數(shù)資料
| 型號： | TSC2301IZQZ |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA120 |
| 封裝： | GREEN, PLASTIC, VFBGA-120 |
| 文件頁數(shù)： | 15/95頁 |
| 文件大小： | 1322K |
| 代理商： | TSC2301IZQZ |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁
www.ti.com
High Except
When TEMP1,
TEMP2 Activated
Internal
50 kW
VDD
PENIRQ
VDD
TEMP1
TEMP2
TEMP DIODE
Y+ or X+ Drivers on,
or TEMP1, TEMP2
Measurements Activated
Y+
X+
Y–
ON
TSC2301
SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004
Figure 49. PENIRQ Functional Block Diagram
In modes where the TSC2301 needs to detect if the screen is still touched (for example, when doing a
PENIRQ-initiated X, Y, and Z conversion), the TSC2301 must reconnect the drivers so that the 50-k
resistor is
connected again. Because of the high value of this pullup resistor, any capacitance on the touch screen inputs
cause a long delay time, and may prevent the detection from occurring correctly. To prevent this, the TSC2301
has a circuit which allows any screen capacitance to be precharged through a low-resistance connection to VDD,
so that the pullup resistor doesn't have to be the only source for the charging current. The time allowed for this
precharge, as well as the time needed to sense if the screen is still touched, can be set in the configuration
control register. All other drivers (X-,Y+, Y-) are off during precharging.
This does point out, however, the need to use the minimum capacitor values possible on the touch screen inputs.
These capacitors may be needed to reduce noise, but too large a value increases the needed precharge and
sense times, as well as panel voltage stabilization time.
In self-controlled modes where the TSC2301 automatically performs conversions when it detects a pen touch, it
is generally not necessary for the host processor to monitor PENIRQ. Instead, the host must monitor DAV, which
goes low when data is available in the appropriate data register, and returns high when all new data has been
read back by the host.
22
相關PDF資料 |
PDF描述 |
|---|---|
| TSC2301IPAGG4 | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TSC2301IPAGRG4 | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TSC2302IRGZRG4 | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| TSDC4872IJT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| TS4872IJT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TSC2301IZQZR | 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec 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 |
| TSC2301PAG | 制造商:TI 制造商全稱:Texas Instruments 功能描述:PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC |
| TSC2301PAGR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC |
| TSC2302 | 制造商:BB 制造商全稱:BB 功能描述:PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC |
| TSC2302IRGZ | 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。