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LTM4677 Datasheet(PDF) 106 Page - Analog Devices |
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LTM4677 Datasheet(HTML) 106 Page - Analog Devices |
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106 / 110 page  LTC3888-1 106 Rev. 0 For more information www.analog.com EEPROM USER ACCESS COMMAND NAME CMD CODE DESCRIPTION TYPE PAGED DATA FORMAT UNITS NVM DEFAULT VALUE STORE_USER_ALL 0x15 Store entire operating memory in EEPROM. Send Byte N RESTORE_USER_ALL 0x16 Restore entire operating memory from EEPROM. Send Byte N MFR_COMPARE_USER_ALL 0xF0 Compare operating memory with EEPROM contents. Send Byte N MFR_FAULT_LOG_STORE 0xEA Force capture of fault log in RAM and transfer to EEPROM. Send Byte N MFR_EE_UNLOCK 0xBD (contact the factory) MFR_EE_ERASE 0xBE (contact the factory) MFR_EE_DATA 0xBF (contact the factory) USER_DATA_00 0xB0 EEPROM word reserved for LTpowerPlay. R/W Word N Reg l USER_DATA_01 0xB1 EEPROM word reserved for LTpowerPlay. R/W Word Y Reg l USER_DATA_02 0xB2 EEPROM word reserved for OEM use. R/W Word N Reg l USER_DATA_03 0xB3 EEPROM word available for general data storage. R/W Word Y Reg l 0x0000 USER_DATA_04 0xB4 EEPROM word available for general data storage. R/W Word N Reg l 0x0000 Related commands: MFR_CONFIG_ALL Note that if the LTC3888-1 die temperature exceeds 130°C, execution of any command in the above table except RESTORE_USER_ALL and MFR_FAULT_LOG_STORE will be disabled until the IC temperature drops below 125°C. RESTORE_USER_ALL is executed immediately, and MFR_FAULT_LOG_STORE to EEPROM is executed after the IC temperature drops below 125°C. Using any command that writes data to the EEPROM is strongly discouraged if bit 6 of STATUS_MFR_ SPECIFIC is set, indicating the internal die temperature is above 85°C. Data retention of 10 years is not guaranteed if the EEPROM is written above a junction temperature of 85°C. STORE_USER_ALL The STORE_USER_ALL command instructs the PMBus device to copy the entire contents of the operating memory to internal EEPROM PMBus configuration space. This write-only command has no data bytes. RESTORE_USER_ALL The RESTORE_USER_ALL command instructs the PMBus device to copy the entire contents of the internal EEPROM to matching locations in operating memory. The values in operating memory are overwritten by the values retrieved from EEPROM. Both master channels should be turned off prior to issuing this command. The LTC3888-1 ensures all PWM channels are off, loads the operating memory from internal EEPROM, clears all faults, reads the resistor configuration pins, and then performs a soft-start of any enabled master channels. This write-only command has no data bytes. PMBus COMMAND DETAILS (EEPROM User Access) |
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