參數(shù)資料
型號(hào)： TSC2200IPWR
英文描述： PDA ANALOG INTERFACE CIRCUIT
中文描述： 掌上電腦模擬接口電路
文件頁(yè)數(shù)： 19/40頁(yè)
文件大小： 645K
代理商： TSC2200IPWR
19
www.ti.com
TSC2200
SBAS191F
MSB
BIT 15
LSB
BIT 0
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
1
0
1
1
1
0
1
1
X
X
X
X
X
X
X
X
TABLE XXXI. Reset Register.
MSB
BIT 15
LSB
BIT 0
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
K15
K14
K13
K12
K11
K10
K9
K8
K7
K6
K5
K4
K3
K2
K1
K0
TABLE XXXIII. Keypad Data Register.
MSB
BIT 15
LSB
BIT 0
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
X
X
X
X
X
X
X
X
D7
D6
D5
D4
D3
D2
D1
D0
TABLE XXXIV. D/A Converter Register.
TABLE XXXII. Result Data Format.
MSB
BIT 15
LSB
BIT 0
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
0
0
0
0
R11
MSB
R10
R9
R8
R7
R6
R5
R4
R3
R2
R1
R0
LSB
TSC2200 DATA REGISTERS
The data registers of the TSC2200 hold data results from
conversions or keypad scans, or the value of the D/A converter
output current. All of these registers default to 0000
H
upon
reset, except the D/A converter register, which is set to 0080
H
,
representing the midscale output of the D/A converter.
X, Y, Z
1
, Z
2
, BAT1, BAT2, AUX1, AUX2, TEMP1,
AND TEMP2 REGISTERS
The results of all A/D conversions are placed in the appro-
priate data register (see Tables III and VIII). The data format
of the result word, R, of these registers is right-justified, as
shown in Table XXXII.
KEYPAD DATA REGISTER
(PAGE 0, ADDRESS 04
H
)
The Keypad Data register (Page 0, Address 04
H
) is format-
ted as shown in Table XXXIII.
This is the same format as used in the Keypad Mask register
(Page 1, Address 10
H
). Each bit in these registers represents
one key on the keypad. A 16-key keypad is mapped into the
Keypad Data register, see Table XXIX.
D/A CONVERTER DATA REGISTER
(PAGE 0, ADDRESS 0B
H
)
The data to be written to the D/A converter is written into the
D/A converter data register, which is formatted as shown in
Table XXXIV.
ZERO REGISTER
(PAGE 0, ADDRESS 10
H
)
This is a reserved data register, but instead of reading all 1
’
s
(FFFF
H
), when read will return all 0
’
s (0000
H
).
OPERATION
—
TOUCH SCREEN MEASUREMENTS
As noted previously in the discussion of the A/D converter,
several operating modes can be used, which allow great
flexibility for the host processor. These different modes will
now be examined.
Conversion Controlled by TSC2200 Initiated at
Touch Detect
In this mode, the TSC2200 will detect when the touch panel is
touched and cause the
PENIRQ
line to go LOW. At the same
time, the TSC2200 will start up its internal clock. It will then turn
on the Y-drivers, and after a programmed Panel Voltage
Stabilization time, power up the A/D converter and convert the
Y-coordinate. If averaging is selected, several conversions
may take place; when data averaging is complete, the Y-
coordinate result will be stored in the Y-register.
If the screen is still touched at this time, the X-drivers will be
enabled, and the process will repeat, but instead measuring
the X-coordinate and storing the result in the X-register.
If only X- and Y-coordinates are to be measured, then the
conversion process is complete. See Figure 8 for 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.
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TSC2200IPWRG4 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc 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
TSC2200IRHB 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc 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
TSC2200IRHBG4 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc 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
TSC2200IRHBR 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc 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
TSC2200IRHBRG4 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc 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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