adm1064
Production
The ADM1064 Super Sequencer® is a configurable supervisory/ sequencing device that offers a single-chip solution for supply monitoring and sequencing in...
Datasheet
adm1064 on Analog.com
I have a new batch of cards that use the ADM1064. Some of this batch always return a NACK for address read FA00.
This is when the read is part of a 2 byte read sequence that starts from F800 and is meant to read the whole EEPROM from 0xF800 to 0xFBFF.
The failing access 'target W address' gets ACK. '1st Address word = FA' gets ACK. '2nd Address word = 00' gets NACK.
The preceding accesses to the ADM1064 completed correctly, which are "target W - F9 - FE" - "target R - Data".
Does anyone have any idea why multiple parts might have an issue reading FA00?
Clock speed is 100KHz.. voltage levels and signals look ok on a scope.
