Initialization the serial interface to the eeprom – Rainbow Electronics T48C862-R4 User Manual

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T48C862-R4

4551B–4BMCU–02/03

A -> acknowledge, N -> no acknowledge; HB: high byte; LB: low byte, R: row address

Initialization the Serial
Interface to the EEPROM

To prevent unexpected behavior of he EEPROM and its interface it is good practice to
use an initialization sequence after any reset of the circuit. This is performed by writing:

to the serial interface. If the EEPROM acknowledges this sequence it is in a defined
state. Maybe it is necessary to perform this sequence twice.

Read high byte first,
address decrement

R/NW

Row address

Byte order

HB(R)

LB(R)

HB(R-1)

LB(R-1)

–

HB(R-n)

LB(R-n)

Start

"FFh"

A Stop