 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
MIC280-4BM6 Datasheet(PDF) 7 Page - Micrel Semiconductor |
|
||||||||||||||||||||||||||||||
MIC280-4BM6 Datasheet(HTML) 7 Page - Micrel Semiconductor |
|
|
7 / 23 page  May 2006 7 MIC280 MIC280 Micrel Functional Description Serial Port Operation The MIC280 uses standard SMBus Write_Byte, Read_Byte, and Read_Word operations for communication with its host. The SMBus Write_Byte operation involves sending the device’s slave address (with the R/W bit low to signal a write operation), followed by a command byte and the data byte. The SMBus Read_Byte operation is a composite write and read operation: the host first sends the device’s slave address followed by the command byte, as in a write operation. A new start bit must then be sent to the MIC280, followed by a repeat of the slave address with the R/W bit (LSB) set to the high (read) state. The data to be read from the part may then be clocked out. A Read_Word is similar, but two successive data bytes are clocked out rather than one. These protocols are shown in Figure 1, Figure 2, and Figure 3. The Command byte is eight bits (one byte) wide. This byte carries the address of the MIC280 register to be operated upon. The command byte values corresponding to the vari- ous MIC280 registers are shown in Table 1. Other command byte values are reserved, and should not be used. Slave Address The MIC280 will only respond to its own unique slave ad- dress. A match between the MIC280’s address and the address specified in the serial bit stream must be made to initiate communication. The MIC280’s slave address is fixed at the time of manufacture. Eight different slave addresses are available as determined by the part number. See Table 2 below and the Ordering Information table above. Part Number Slave Address MIC280-0BM6 100 1000b = 48h MIC280-1BM6 100 1001b = 49h MIC280-2BM6 100 1010b = 4Ah MIC280-3BM6 100 1011b = 4Bh MIC280-4BM6 100 1100b = 4Ch MIC280-5BM6 100 1101b = 4Dh MIC280-6BM6 100 1110b = 4Eh MIC280-7BM6 100 1111b = 4Fh Table 2: MIC280 Slave Addresses Alert Response Address In addition to the Read_Byte, Write_Byte, and Read_Word protocols, the MIC280 adheres to the SMBus protocol for response to theAlert ResponseAddress (ARA). The MIC280 expects to be interrogated using the ARA when it has as- serted its /INT output. Temperature Data Format The least-significant bit of each temperature register (high bytes) represents one degree Centigrade. The values are in a two’s complement format, wherein the most significant bit Command Byte Power-on Target Register Value Default Label Description Read Write TEMP0 Local temperature result 00h n/a 00h (0°C) TEMP1h Remote temperature result, high byte 01h n/a 00h (0°C) STATUS Status 02h n/a 00h CONFIG Configuration 03h 03h 80h IMASK Interrupt mask register 04h 04h 07h THIGH0 Local temperature high limit 05h 05h 3Ch (60°C) TLOW0 Local temperature low limit 06h 06h 00h (0°C) THIGH1h Remote temperature high limit, high byte 07h 07h 50h (80°C) TLOW1h Remote temperature low limit, high byte 08h 08h 00h (0°C) LOCK Security register 09h 09h 00h TEMP1l Remote temperature result, low byte 10h n/a 00h THIGH1l Remote temperature high limit, low byte 13h 13h 00h TLOW1l Remote temperature low limit, low byte 14h 14h 00h CRIT1 Remote over-temperature limit 19h 19h 64h (100°C) CRIT0 Local over-temperature limit 20h 20h 46h (70°C) MFG_ID Manufacturer Identification FEh n/a 2Ah DEV_ID Device and revision identification FFh n/a 0xh* * The lower nibble contains the die revision level, e.g., Rev 0 = 00h. Table 1: MIC280 Register Addresses |
Similar Part No. - MIC280-4BM6 |
|
Similar Description - MIC280-4BM6 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | 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
