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參數(shù)資料
| 型號： | TSC2003IPWRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| 封裝： | GREEN, PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 14/28頁 |
| 文件大?。?/td> | 560K |
| 代理商： | TSC2003IPWRQ1 |
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SDA
SCL
1
0
1
0
A1
A0
R/W
0
C3
C2
C1
C0 PD1 PD0
M
X
0
Start
TSC2003
ACK
TSC2003
ACK
Address Byte
Command Byte
Acquisition
Conversion
Stop or
Repeated Start
Read a Conversion/Read Cycle
SDA
SCL
1
0
1
0
A1 A0 R/W
1
0
D11 D10
D9 D8 D7 D6 D5 D4
0
D3
D2 D1
D0
0
1
Start
TSC2003
ACK
Master
ACK
Master
NACK
Stop or
Repeated Start
Address Byte
Date Byte 1
Date Byte 2
www.ti.com ........................................................................................................................................................................................... SBAS454 – DECEMBER 2008
If the master sends additional command bytes after the initial byte, before sending a Stop or repeated Start
condition, the TSC2003 does not acknowledge those bytes.
The input multiplexer for the ADC has its channel selected when bits C3 through C0 are clocked in. If the
selected channel is an X-,Y-, or Z-position measurement, the appropriate drivers turn on once the acquisition
period begins.
When R/W = 0, the input sample acquisition period starts on the falling edge of SCL once the C0 bit of the
command byte has been latched, and ends when a Stop or repeated Start condition has been issued. A/D
conversion starts immediately after the acquisition period. The multiplexer inputs to the ADC are disabled once
the conversion period starts. However, if an X-, Y-, or Z-position is being measured, the respective touch screen
drivers remain on during the conversion period. A complete write cycle is shown in Figure 14.
Figure 14. Complete I2C Serial Write Transmission
For best performance, the I2C bus should remain in an idle state while an A/D conversion is taking place. This
prevents digital clock noise from affecting the bit decisions being made by the TSC2003. The master should wait
for at least 10
s before attempting to read data from the TSC2003 to realize this best performance. However,
the master does not need to wait for a completed conversion before beginning a read from the slave, if full 12-bit
performance is not necessary.
Data access begins with the master issuing a Start condition followed by the address byte (see Figure 12) with
R/W = 1. Once the eighth bit has been received, and the address matches, the slave issues an acknowledge.
The first byte of serial data follows (D11 to D4, MSB first).
After the first byte has been sent by the slave, it releases the SDA line for the master to issue an acknowledge.
The slave responds with the second byte of serial data upon receiving the acknowledge from the master (D3-D0,
followed by four 0 bits). The second byte is followed by a NOT acknowledge bit (ACK = 1) from the master to
indicate that the last data byte has been received. If the master acknowledges the second data byte, then the
data repeats on subsequent reads with ACKs between bytes. This is true in both 12-bit and 8-bit mode. The
master then issues a Stop condition, which ends the read cycle, as shown in Figure 15.
Figure 15. Complete I2C Serial Read Transmission
Copyright 2008, Texas Instruments Incorporated
21
Product Folder Link(s): TSC2003-Q1
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| TSC2003I | 3-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| TSC2003IR | 3-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| TSC2008IRGVR | SPECIALTY CONSUMER CIRCUIT, PQCC16 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TSC2003IR | 功能描述:IC TOUCH SCREEN CNTRLLR 16-TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 觸摸屏控制器 系列:- 標準包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數(shù)/鍵:- 分辨率（位）:- 評估套件:* 數(shù)據(jù)接口:- 數(shù)據(jù)速率/采樣率 (SPS，BPS):- 電壓基準:- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| TSC2003IZQCR | 功能描述:觸摸屏轉換器和控制器 4-wire Touch Screen Controller 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 |
| TSC2003-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:I2C TOUCH SCREEN CONTROLLER |
| TSC2004 | 制造商:BB 制造商全稱:BB 功能描述:1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire TOUCH SCREEN CONTROLLER with I2C⑩ Interface |
| TSC2004_12 | 制造商:BB 制造商全稱:BB 功能描述:1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire |
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