数据搜索系统,热门电子元器件搜索 |
|
ADT7470ARQ-REEL 数据表(PDF) 9 Page - Analog Devices |
|
ADT7470ARQ-REEL 数据表(HTML) 9 Page - Analog Devices |
9 / 40 page Preliminary Technical Data ADT7470 Rev. PrA | Page 9 of 40 1 00 1 1 1 A1 A0 R/W 99 1 1 D7 D6 D5 D4 D3 D2 D1 D0 9 D7 D6 D5 D4 D3 D2 D1 D0 SCL SDA SCL (CONTINUED) SDA (CONTINUED) START BY MASTER ACK. BY ADT7470 ACK. BY ADT7470 ACK. BY ADT7470 STOP BY MASTER FRAME 1 SERIAL BUS ADDRESS BYTE FRAME 2 ADDRESS POINTER REGISTER BYTE FRAME 3 DATA BYTE Figure 7. Writing a Register Address to the Address Pointer Register, then Writing Data to the Selected Register SCL SDA 1 01 0 1 1 A1 A0 START BY MASTER FRAME 1 SERIAL BUS ADDRESS BYTE FRAME 2 ADDRESS POINTER REGISTER BYTE STOP BY MASTER ACK. BY ADT7470 ACK. BY ADT7470 R/W D7 D6 D5 D4 D3 D2 D1 D0 99 1 Figure 8. Writing to the Address Pointer Register Only SCL SDA 1 01 0 1 1 A1 A0 START BY MASTER FRAME 1 SERIAL BUS ADDRESS BYTE FRAME 2 DATA BYTE FROM ADT7470 STOP BY MASTER ACK. BY ADT7470 NO ACK. BY MASTER R/W D7 D6 D5 D4 D3 D2 D1 D0 99 1 Figure 9. Reading Data from a Previously Selected Register In the case of the ADT7470, write operations contain either one or two bytes, and read operations contain one byte, and perform the following functions. To write data to one of the device data registers or read data from it, the address pointer register must be set so that the correct data register is addressed, then data can be written into that register or read from it. The first byte of a write operation always contains an address that is stored in the address pointer register. If data is to be written to the device, then the write operation contains a second data byte that is written to the register selected by the address pointer register. This is illustrated in Figure 7. The device address is sent over the bus followed by R/W set to 0. This is followed by two data bytes. The first data byte is the address of the internal data register to be written to, which is stored in the address pointer register. The second data byte is the data to be written to the internal data register. When reading data from a register there are two possibilities: • If the ADT7470 address pointer register value is unknown or not the desired value, it is first necessary to set it to the correct value before data can be read from the desired data register. This is done by performing a write to the ADT7470 |
类似零件编号 - ADT7470ARQ-REEL |
|
类似说明 - ADT7470ARQ-REEL |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |