- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98303 > TSC2302IRGZRG4 (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PQCC48 PDF資料下載
參數(shù)資料
| 型號： | TSC2302IRGZRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| 封裝： | GREEN, PLASTIC, VQFN-48 |
| 文件頁數(shù)： | 10/85頁 |
| 文件大?。?/td> | 1483K |
| 代理商： | TSC2302IRGZRG4 |
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頁當(dāng)前第10頁第11頁第12頁第13頁第14頁第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
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
TSC2302
SLAS394 – JULY 2003
Figure 44. PENIRQ Functional Block Diagram
In modes where the TSC2302 needs to detect if the screen is still touched (for example, when doing a
PENIRQ-initiated X, Y, and Z conversion), the TSC2302 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 TSC2302
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 TSC2302 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.
18
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TSDC4872IJT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| TS4872IJT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| TSH103ID | 3 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| TSH103IDT | 3 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| TSH120ICT | SPECIALTY CONSUMER CIRCUIT, PDSO6 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSC2303IZQZ | 制造商:Texas Instruments 功能描述: |
| TSC2303IZQZR | 制造商:Texas Instruments 功能描述: |
| TSC236 | 制造商:TSC 制造商全稱:Taiwan Semiconductor Company, Ltd 功能描述:High Voltage NPN Transistor |
| TSC236CIC0 | 制造商:TSC 制造商全稱:Taiwan Semiconductor Company, Ltd 功能描述:High Voltage NPN Transistor |
| TSC236CZ C0 | 功能描述:兩極晶體管 - BJT High voltage NPN Transistor RoHS:否 制造商:STMicroelectronics 配置: 晶體管極性:PNP 集電極—基極電壓 VCBO: 集電極—發(fā)射極最大電壓 VCEO:- 40 V 發(fā)射極 - 基極電壓 VEBO:- 6 V 集電極—射極飽和電壓: 最大直流電集電極電流: 增益帶寬產(chǎn)品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。