參數(shù)資料
型號(hào)： TSC2301IGQZ
廠商： Texas Instruments, Inc.
元件分類： Codec
英文描述： PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC
中文描述： 可編程觸摸屏控制器，立體聲編解碼器
文件頁數(shù)： 40/92頁
文件大?。?/td> 1161K
代理商： TSC2301IGQZ
www.ti.com
tcoordinate
2.5 s
2 tPVS
tPRE
tSNS
2NAVGNBITS
1
fconv
4.4 s
(4)
tcoordinate
4.75 s
3 tPVS
tPRE
tSNS
4NAVGNBITS
1
fconv
4.4 s
(5)
TSC2301
SLAS371D–SEPTEMBER 2002–REVISED AUGUST 2004
If only X and Y coordinates are to be measured, then the conversion process is complete.
Figure 51
shows a
flowchart for this process. The time it takes to go through this process depends upon the selected resolution,
internal conversion clock rate, averaging selected, panel voltage stabilization time, and precharge and sense
times.
The time needed to get a complete X/Y coordinate reading can be calculated by:
where:
If the pressure of the touch is also to be measured, the process continues after the X-conversion is complete,
measuring the Z1 and Z2 values, and placing them in the Z1 and Z2 registers. This process is illustrated in
Figure 52
. As before, this process time depends upon the settings described above. The time for a complete
X/Y/Z1/Z2 coordinate reading is given by:
t
coordinate
= time to complete X/Y coordinate reading;
t
PVS
= panel voltage stabilization time, as given in
Table 11
;
t
PRE
= precharge time, as given in
Table 18
;
t
SNS
= sense time, as given in
Table 19
;
N
AVG
= number of averages, as given in
Table 9
; for no averaging, NAVG = 1;
N
BITS
= number of bits of resolution, as given in
Table 8
;
f
conv
= A/D converter clock frequency, as given in
Table 10
.
40
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TSC2301IPAGG4 功能描述:觸摸屏轉(zhuǎn)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
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