ATAM894R-TNSY Atmel, ATAM894R-TNSY Datasheet - Page 87
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ATAM894R-TNSY
Manufacturer Part Number
ATAM894R-TNSY
Description
flash, Microcontrollers, Microprocessors, Semiconductors and Actives, ic, mcu
Manufacturer
Atmel
Datasheet
1.ATAM894R-TNSY.pdf
(97 pages)
- Current page: 87 of 97
- Download datasheet (2Mb)
7.1.2.5
4679D–4BMCU–05/05
Initializing the Serial Interface to the EEPROM
Read One Data Byte
Read Two Data Bytes
Read n Data Bytes
Read Control Bytes
A
To prevent unexpected behavior of the 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. It may
be necessary to perform this sequence twice.
Start
Read low byte first,
address increment
Byte order
Read high byte first,
address decrement
Byte order
Start
Start
Start
acknowledge, N
Control byte
“FFh”
Control byte
Control byte
HB(R)
LB(R)
A
A
no acknowledge; HB: high byte; LB: low byte, R: row address
A
A
Data byte 1
HB(R)
LB(R)
Data byte 1
Data byte 1
A4
A4
N Stop
MSB
MSB
LB(R+1)
HB(R-1)
A3
A3
A
Row address
Row address
N
A
Data byte 2
Stop
Data byte 2
A2
A2
HB(R+1)
LB(R-1)
A1
A1
A - - -
A0
A0
N
- - -
- - -
Stop
Data byte n
C1
C1
0
1
LB(R+n)
HB(R-n)
C0
C0
1
0
ATAM894
HB(R+n)
LB(R-n)
N Stop
R/NW
R/NW
LSB
LSB
1
1
87
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