Strange memory protocol

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i have chip should hold calibration data. expected eeprom looks not classic eeprom. how connected.



i think clear pins 4 , 8 (or 1) power pins , pins 5 , 7 communication. communication? i2c eeproms have found datasheet of have i2c pins on pins 5 , 6. have tried i2c protocol anyway didn't response. have thought spi 2 data lines strange. morover why there may resistors?

so have idea how communicate? or hint how can find protocol (without hijacking original communication)?

i presume no markings on ic. idea circuit came out of?


Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > Strange memory protocol


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