參數(shù)資料
型號(hào): TSC2101IRGZRG4
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC48
封裝: GREEN, PLASTIC, VQFN-48
文件頁(yè)數(shù): 76/95頁(yè)
文件大小: 1217K
代理商: TSC2101IRGZRG4
TSC2101
SLAS392D JUNE 2003 REVISED MAY 2005
www.ti.com
78
Touch Screen Conversion Initiated by the Host
The time needed to convert any single coordinate either X or Y under host-controlled mode (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
Reading
XData
Register
Touch is still there
Touch is detected
/PINTDAV
(As /PENIRQ
[D15D14 = 00])
/PINTDAV
(As /DATA_AVA
[D15D14 = 01])
/PINTDAV
(As /PENIRQ & DATA_AVA
[D15D14 = 10/11])
Waiting for Host to write
into REG00 of PAGE01
Waiting for Host to write into
REG00 of PAGE01
REG00 of
PAGE01
is updated
for
X Scan
Mode
/SS DEACTIVATED
Detecting
Touch
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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