- 您现在的位置：买卖IC网 > PDF目录45009 > LY530ALTR (STMICROELECTRONICS) SPECIALTY ANALOG CIRCUIT, PBGA16 PDF资料下载
参数资料
| 型号： | LY530ALTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA16 |
| 封装： | 5 X 5 MM, 1.60 MM HEIGHT, LEAD FREE, LGA-16 |
| 文件页数： | 10/30页 |
| 文件大小： | 576K |
| 代理商： | LY530ALTR |
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页当前第10页第11页第12页第13页第14页第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
Digital interfaces
LY530AL
18/30
4.1.1
I2C operation
The transaction on the bus is started through a START (ST) signal. A START condition is
defined as a HIGH to LOW transition on the data line while the SCL line is held HIGH. After
this has been transmitted by the Master, the bus is considered busy. The next byte of data
transmitted after the start condition contains the address of the slave in the first 7 bits and
the eighth bit tells whether the Master is receiving data from the slave or transmitting data to
the slave. When an address is sent, each device in the system compares the first seven bits
after a start condition with its address. If they match, the device considers itself addressed
by the Master.
The Slave ADdress (SAD) associated to the LY530AL is 110100xb. SDO pin can be used to
modify less significant bit of the device address. If SDO pin is connected to voltage supply
LSb is ‘1’ (address 1101001b) else if SDO pin is connected to ground LSb value is ‘0’
(address 1101000b). This solution permits to connect and address two different gyroscopes
to the same I2C bus.
Data transfer with acknowledge is mandatory. The transmitter must release the SDA line
during the acknowledge pulse. The receiver must then pull the data line LOW so that it
remains stable low during the HIGH period of the acknowledge clock pulse. A receiver which
has been addressed is obliged to generate an acknowledge after each byte of data
received.
The I2C embedded inside the LY530AL behaves like a slave device and the following
protocol must be adhered to. After the start condition (ST) a slave address is sent, once a
slave acknowledge (SAK) has been returned, a 8-bit sub-address will be transmitted: the 7
LSb represent the actual register address while the MSB enables address auto increment. If
the MSb of the SUB field is 1, the SUB (register address) will be automatically incremented
to allow multiple data read/write.
The slave address is completed with a Read/Write bit. If the bit was ‘1’ (Read), a repeated
START (SR) condition will have to be issued after the two sub-address bytes; if the bit is ‘0’
(Write) the Master will transmit to the slave with direction unchanged.
Table explains how
the SAD+Read/Write bit pattern is composed, listing all the possible configurations.
Table 12.
SAD+Read/Write patterns
Command
SAD[6:1]
SAD[0] = SDO
R/W
SAD+R/W
Read
110100
0
1
11010001 (39h)
Write
110100
0
11010000 (38h)
Read
110100
1
11010011 (3Bh)
Write
110100
1
0
11010010 (3Ah)
Table 13.
Transfer when Master is writing one byte to slave
Master
ST
SAD + W
SUB
DATA
SP
Slave
SAK
相关PDF资料 |
PDF描述 |
|---|---|
| M0130RL220 | 56 A, 2200 V, SILICON, RECTIFIER DIODE |
| M0225YH400 | 225 A, 4000 V, SILICON, RECTIFIER DIODE |
| M0268RC240 | 120 A, 2400 V, SILICON, RECTIFIER DIODE |
| M0268SJ200 | 120 A, 2000 V, SILICON, RECTIFIER DIODE |
| M0268RC200 | 120 A, 2000 V, SILICON, RECTIFIER DIODE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LY530Z | 制造商:SEOUL 制造商全称:Seoul Semiconductor 功能描述:GREEN OVAL LAMP LED |
| LY531 | 制造商:SEOUL 制造商全称:Seoul Semiconductor 功能描述:RED OVAL LAMP LED |
| LY5330-PF | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:RECTANGLE TYPE LED LAMPS |
| LY5360 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:T1 (5mm) LED LAMP |
| LY5360-HL | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:5 mm (T1 3/4) LED, Diffused |
发布紧急采购，3分钟左右您将得到回复。