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參數(shù)資料
| 型號(hào)： | TSC2100IRHBRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁(yè)數(shù)： | 55/77頁(yè) |
| 文件大小： | 1079K |
| 代理商： | TSC2100IRHBRG4 |
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TSC2100
SLAS378 NOVEMBER 2003
www.ti.com
59
Touch Screen Conversion Initiated by the Host
The time needed to convert any single coordinate either X or Y under host control (not including the time needed to send
the command over the SPI bus) is given by:
tcoordinate +
tPVS
125 ns
tOSC ) NAVG NBITS ) 1
8MHz
conv
) n1 ) 12 ) 1
tOSC ) 14 tOSC ) n2 tOSC
n1 = 6 ; if conv = 8 MHz
7 ; if conv ≠ 8 MHz
n2 = 2 ; if tPVS = 0 s
0 ; if tPVS ≠ 0 s
Programmed
for Host
Controlled
Mode
Detecting Touch
Sample,Conversion &
Averaging for
XCoordinate
Touch Is Still There
Waiting for Host to Write
into REG00 of PAGE01
REG00 of
PAGE01
Is Updated
for
X Scan
Mode
Detecting
Touch
SS DEACTIVATED
(As PENIRQ
[D15D14 = 00])
PINTDAV
(As PENIRQ & DATA_AVA
[D15D14 = 10/11])
PINTDAV
Touch Is Detected
(As DATA_AVA
[D15D14 = 01])
PINTDAV
Waiting for Host to Write Into
REG00 of PAGE01
Reading
XData
Register
The time needed to convert the Z coordinate under host control (not including the time needed to send the command over
the SPI bus) is given by:
tcoordinate +
tPVS
125 ns
tOSC ) 2
NAVG NBITS ) 1
8MHz
conv
) n1 ) 12 ) 1
tOSC ) 20 tOSC ) n2 tOSC
n1 = 6 ; if conv = 8 MHz
7 ; if conv ≠ 8 MHz
n2 = 2 ; if tPVS = 0 s
0 ; if tPVS ≠ 0 s
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