 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LTC2637 Datasheet(PDF) 20 Page - Linear Technology |
|
|
|||||||||||||||||||||||||||||
LTC2637 Datasheet(HTML) 20 Page - Linear Technology |
|
|
20 / 28 page  LTC2637 0 2637fa operation Acknowledge The Acknowledge (ACK) signal is used for handshaking between the master and the slave. An ACK (active LOW) generated by the slave lets the master know that the lat- est byte of information was properly received. The ACK related clock pulse is generated by the master. The master releases the SDA line (HIGH) during the ACK clock pulse. The slave-receiver must pull down the SDA bus line dur- ing the ACK clock pulse so that it remains a stable LOW during the HIGH period of this clock pulse. The LTC2637 responds to a write by a master in this manner but does not acknowledge a read operation; in that case, SDA is retained HIGH during the period of the ACK clock pulse. Chip Address The state of pins CA0, CA1 and CA2 (CA1 and CA2 are only available on the MSOP package) determines the slave address of the part. These pins can each be set to any one of three states: VCC, GND or float. This results in 27 (MSOPPackage)or3(DFNPackage)selectableaddresses for the part. The slave address assignments are shown in Tables 1 and 2. In addition to the address selected by the address pins, the part also responds to a global address. This address allows a common write to all LTC2637 parts to be ac- complished using one 3-byte write transaction on the I2C bus. The global address, listed at the end of Tables 1 and 2, is a 7-bit hardwired address not selectable by CA0, CA1 or CA2. If another global address is required, please consult the factory. The maximum capacitive load allowed on the address pins (CA0,CA1andCA2)is10pF,asthesepinsaredrivenduring address detection to determine if they are floating. Table 1. Slave Address Map (MSOP Package) CA2 CA1 CA0 A6 A5 A4 A3 A2 A1 A0 GND GND GND 0 0 1 0 0 0 0 GND GND FLOAT 0 0 1 0 0 0 1 GND GND VCC 0 0 1 0 0 1 0 GND FLOAT GND 0 0 1 0 0 1 1 GND FLOAT FLOAT 0 1 0 0 0 0 0 GND FLOAT VCC 0 1 0 0 0 0 1 GND VCC GND 0 1 0 0 0 1 0 GND VCC FLOAT 0 1 0 0 0 1 1 GND VCC VCC 0 1 1 0 0 0 0 FLOAT GND GND 0 1 1 0 0 0 1 FLOAT GND FLOAT 0 1 1 0 0 1 0 FLOAT GND VCC 0 1 1 0 0 1 1 FLOAT FLOAT GND 1 0 0 0 0 0 0 FLOAT FLOAT FLOAT 1 0 0 0 0 0 1 FLOAT FLOAT VCC 1 0 0 0 0 1 0 FLOAT VCC GND 1 0 0 0 0 1 1 FLOAT VCC FLOAT 1 0 1 0 0 0 0 FLOAT VCC VCC 1 0 1 0 0 0 1 VCC GND GND 1 0 1 0 0 1 0 VCC GND FLOAT 1 0 1 0 0 1 1 VCC GND VCC 1 1 0 0 0 0 0 VCC FLOAT GND 1 1 0 0 0 0 1 VCC FLOAT FLOAT 1 1 0 0 0 1 0 VCC FLOAT VCC 1 1 0 0 0 1 1 VCC VCC GND 1 1 1 0 0 0 0 VCC VCC FLOAT 1 1 1 0 0 0 1 VCC VCC VCC 1 1 1 0 0 1 0 GLOBAL ADDRESS 1 1 1 0 0 1 1 Table 2. Slave Address Map (DFN Package) CA0 A6 A5 A4 A3 A2 A1 A0 GND 0 0 1 0 0 0 0 FLOAT 0 0 1 0 0 0 1 VCC 0 0 1 0 0 1 0 GLOBAL ADDRESS 1 1 1 0 0 1 1 |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
