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參數(shù)資料
| 型號： | QT60240-ATG |
| 廠商： | Atmel |
| 文件頁數(shù)： | 7/26頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TOUCH SENSOR 24KEY 32-TQFP |
| 標準包裝： | 3,000 |
| 系列： | QMatrix™ |
| 類型： | 電容性 |
| 輸入數(shù)/鍵： | 24 鍵 |
| 分辨率（位）： | 10 b |
| 評估套件： | 可供 |
| 數(shù)據(jù)接口： | I²C，串行，SPI? |
| 電壓基準： | 外部 |
| 電源電壓： | 1.8V，3.3V，5V |
| 電流 - 電源： | 4.6mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-TQFP |
| 供應(yīng)商設(shè)備封裝： | 32-TQFP |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | QT60240-ATG-ND QT60240-ATGTR |
5 I2C Operation
5.1 Interface Bus
More detailed information about I 2C is available from
www.i2C-bus.org. Devices are connected onto the I 2C bus as
shown in Figure 5.1. Both bus lines are connected to V dd via
pull-up resistors. The bus drivers of all I 2C devices must be
open-drain type. This implements a wired-AND function which
allows any and all devices to drive the bus, one at a time. A
low level on the bus is generated when a device outputs a
zero.
Figure 5.1 I
2C Interface Bus
Vcc
Device 1
Device 2
Device 3
Device n
R1
R2
SDA
SCL
4.7s minimum
Bus free time between a STOP and START
condition
4s minimum
Setup time for STOP condition
4s minimum
Hold time START condition
100 kHz
Maximum bus speed (SCL)
7-bit
Address space
Unit
Parameter
Table 5.1 I
2C Bus Specifications
5.2 Transferring Data Bits
Each data bit transferred on the bus is accompanied by a
pulse on the clock line. The level of the data line must be
stable when the clock line is high; The only exception to this
rule is for generating START and STOP conditions.
Figure 5.2 Data Transfer
SDA
SCL
Data Stable
Data Change
5.3 START and STOP Conditions
The host initiates and terminates a data transmission. The
transmission is initiated when the host issues a START
condition on the bus, and is terminated when the host issues
a STOP condition. Between START and STOP conditions, the
bus is considered busy. As shown below, START and STOP
conditions are signaled by changing the level of the SDA line
when the SCL line is high.
Figure 5.3 START and STOP Conditions
SDA
SCL
START
STOP
5.4 Address Packet Format
All address packets are 9 bits long, consisting of 7 address
bits, one READ/WRITE control bit and an acknowledge bit. If
the READ/WRITE bit is set, a read operation is performed,
otherwise a write operation is performed. When the device
recognizes that it is being addressed, it will acknowledge by
pulling SDA low in the ninth SCL (ACK) cycle. An address
packet consisting of a slave address and a READ or a
WRITE bit is called SLA+R or SLA+W, respectively.
The most significant bit of the address byte is transmitted
first. The address sent by the host must be consistent with
that selected with the option jumpers.
Figure 5.4 Address Packet Format
SDA
SCL
Addr MSB
Addr LSB
R/W
ACK
START
12
7
8
9
5.5 Data Packet Format
All data packets are 9 bits long, consisting of one data byte
and an acknowledge bit. During a data transfer, the host
generates the clock and the START and STOP conditions,
while the Receiver is responsible for acknowledging the
reception. An acknowledge (ACK) is signaled by the Receiver
pulling the SDA line low during the ninth SCL cycle. If the
Receiver leaves the SDA line high, a NACK is signaled.
lQ
15
QT60240-ISG R8.06/0906
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| QT60240-ATG SL924 | 制造商:Atmel Corporation 功能描述:INTEGRATED-CIRCUIT 制造商:Atmel 功能描述:INTEGRATED-CIRCUIT |
| QT60240-ATG-SL924 | 功能描述:接口 - 專用 Integrated Circuit RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| QT60240-ISG | 功能描述:接口 - 專用 1.8 - 5.5V 24 Chan QMatrix RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| QT60240-ISG QS130 | 功能描述:SENSOR IC MTRX TOUCH24KEY 32-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 觸摸屏控制器 系列:QMatrix™ 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(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
| QT60240-ISG-QS130 | 功能描述:接口 - 專用 1.8 - 5.5V 24 Chan QMatrix RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
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