ATAM862 datasheet(99/110 Pages) ATMEL

99 / 110 page

4554E–4BMCU–05/06

ATAM862-3

24.7.9

Read One Data Byte

24.7.10

Read Two Data Bytes

24.7.11

Read n Data Bytes

24.7.12

Read Control Bytes

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

24.8

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.

Start

Control byte

Data byte 1

Stop

Start

Control byte

Data byte 1

Data byte 2

Stop

Start

Control byte

Data byte 1

Data byte 2

- - -

Data byte n

Stop

MSB

LSB

Read low byte first,

address increment

R/NW

Row address

Byte order

LB(R)

HB(R)

LB(R+1)

HB(R+1)

- - -

LB(R+n)

HB(R+n)

MSB

LSB

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"

Stop

ATAM862 Datasheet(PDF) 99 Page - ATMEL Corporation

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