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参数资料
| 型号： | TCA8418EYFPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, BGA25 |
| 封装： | 2 X 2 MM, 0.40 MM PITCH, DSBGA-25 |
| 文件页数： | 15/31页 |
| 文件大小： | 400K |
| 代理商： | TCA8418EYFPR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页当前第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页
0
0
0 AD
DR
0
1
S
0
A
R/W
A
P
NA
S
1
MS
LS
Slave Address
Acknowledge
From Slave
Command Byte
Data From Upper
or Lower Byte
of Register
Last Byte
Data
Acknowledge
From Slave
Acknowledge
From Slave
Slave Address
Data From Lower
or Upper Byte
of Register
First Byte
Data
No Acknowledge
From Master
Acknowledge
From Master
At this moment, master transmitter
slave transmitter.
becomes master receiver, and
slave receiver becomes
0
AD
DR
0
1
R/W
1
2
3
4
5
6
7
8
9
S 0
1
0 0 0 0
AD
DR
1 A
1
A
DatafromPort
A
DatafromPort
P
SCL
SDA
INT
ReadFrom
Port
DataInto
Port
Acknowledge
FromMaster
Acknowledge
FromSlave
Acknowledge
FromMaster
t
iv
t
ir
R/W
Data1
Data4
SCPS222B – MAY 2010 – REVISED SEPTEMBER 2010
www.ti.com
Reads
The bus master first must send the TCA8418E address with the LSB set to a logic 0. The command byte is sent
after the address and determines which register is accessed. After a restart, the device address is sent again
but, this time, the LSB is set to a logic 1. Data from the register defined by the command byte then is sent by the
TCA8418E (see Figure 11 and Figure 12). Data is clocked into the register on the rising edge of the ACK clock
pulse.
Figure 11. Read From Register
Figure 12. Read From Input Port Register
22
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TCA8418E
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TCA8418EYFPR | 制造商:Texas Instruments 功能描述:IC I2C CONTROLLED KEYPAD SCAN 3.6V 25 |
| TCA8418RTWR | 功能描述:I2C 接口集成电路 Low-Vltg 16B I2C & SMBus I/O Expander RoHS:否 制造商:NXP Semiconductors 电源电压-最大:5.5 V 电源电压-最小:2.3 V 最大工作频率:400 KHz 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-16 |
| TCA8418YFPR | 制造商:TI 制造商全称:Texas Instruments 功能描述:I2C CONTROLLED KEYPAD SCAN IC WITH INTEGRATED ESD PROTECTION |
| TCA8424 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Check for Samples: TCA8424 |
| TCA8424EVM-038 | 功能描述:界面开发工具 TCA8424 EVAL MOD RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
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