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In-circuit programming for the MAX16046-MAX16049 EEPROM-programmable system managers

Posted: 28 May 2009 ?? ?Print Version ?Bookmark and Share

Keywords:EEPROM? system managers? MAX16046-MAX16049?

The MAX16046-MAX16049 EEPROM-programmable system managers are power-supply sequencers, monitors and marginers that can control up to 12 power supplies. Power supplies are monitored by three digital comparators, margined by programmable DAC outputs and sequenced with a programmable state machine. These system managers include an SMBus-compatible I?C interface and a JTAG interface, both of which can access all device registers and program the internal configuration EEPROM. The MAX16046-MAX16049 are in-circuit programmable, as long as a few simple guidelines are followed.

The MAX16046-MAX16049 system managers can be programmed after being soldered to the application circuit board. This means that only unprogrammed devices need to be stocked, and that the latest version of the configuration information can be written to the device during manufacturing test. A few simple measures ensure that the application circuit allows the programming hardware to share the I?C or JTAG bus line and provides power for the device during programming. The programming algorithm is provided for both the I?C bus and the JTAG bus.

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