參數資料
型號： TSC2101IRGZG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQCC48
封裝： GREEN, PLASTIC, VQFN-48
文件頁數： 73/95頁
文件大?。?/td> 1217K
代理商： TSC2101IRGZG4
TSC2101
SLAS392D JUNE 2003 REVISED MAY 2005
www.ti.com
75
CONVERSION TIME CALCULATIONS FOR THE TSC2101
Touch Screen Conversion Initiated at Touch Detect
The time needed to get a converted X/Y coordinate for reading can be calculated by (not including the time
needed to send the command over the SPI bus):
tcoordinate + 2
tPRE ) tSNS ) tPVS
125 ns
tOSC ) 2
NAVG NBITS ) 1
8MHz
conv
) n1 ) 12 ) 1
tOSC ) 18 tOSC ) n2 tOSC ) n3 tOSC
where:
tcoordinate = time to convert X/Y coordinate
tPVS = Panel voltage stabilization time
tPRE = precharge time
tSNS = sense time
NAVG = number of averages; for no averaging, NAVG = 1
NBITS = number of bits of resolution
conv = A/D converter clock frequency
tOSC = Oscillator clock period
n1 = 6 ; if conv = 8 MHz
7 ; if conv ≠ 8 MHz
n2 = 4 ; if tPVS = 0 s
0 ; if tPVS ≠ 0 s
n3 = 0 ; if tSNS = 32 s
2 ; if tSNS ≠ 32 s
tPGDEL = Programmable delay in between conversion for touch screen measurement
= 0: if programmable delay mode is disabled for touch screen measurement
(1) tPGDEL delay is generated by using: Internal oscillator clock whose typical frequency is 1 MHz, in internal clock
mode, or MCLK/CLKDIV (as programmed in control register 14H/pag1) in external clock mode.
(2) The above formula is valid exactly only when the codec is powered down. Also after touch detect the formula holds
true from second conversion onwards.
(3) If D15D14 of control register 01H/page 1 = 00, then in case of continuous touch PINTDAV remains high for
tPRE ) tSNS
tOSC 125 ns . If D15D14 of control register 01H/page 1 = 10/11, then in case of continuous touch
PINTDAC remains high for
tPRE ) tSNS
tOSC 125 ns ) tPGDEL .
Programmed
for Self
Controlled
XY Scan
Mode
Detecting Touch
Sample,Conversion &
Averaging for
YCoordinate
Reading
XData
Register
Reading
YData
Register
Detecting
Touch
Sample,Conversion &
Averaging for
XCoordinate
Detecting
Touch
Sample,Conversion &
Averaging for
YCoordinate
Detecting
Touch
SS DEACTIVATED
Touch Is Detected
(As PENIRQ
[D15D14 = 00])
PINTDAV
(As PENIRQ & DATA_AVA
[D15D14 = 10/11])
PINTDAV
Touch Is Detected
(As DATA_AVA
[D15D14 = 01])
PINTDAV
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相關代理商/技術參數
參數描述
TSC2101IRGZR 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/6 Audio Inputs 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
TSC2101IRGZRG4 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/6 Audio Inputs 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
TSC2101RGZG4 制造商:Texas Instruments 功能描述:AUD CODEC 2ADC / 2DAC 32BIT 48QFN - Rail/Tube
TSC2101RGZRG4 制造商:Texas Instruments 功能描述:AUD CODEC 2ADC / 2DAC 32BIT 48QFN - Tape and Reel
TSC2102 制造商:TI 制造商全稱:Texas Instruments 功能描述:PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH INTEGRATED STEREO AUDIO DAC AND HEADPHONE AMPLIFIER
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