AT91SAM7S32-AI ATMEL [ATMEL Corporation], AT91SAM7S32-AI Datasheet - Page 253

• Manufacturer Part Number: AT91SAM7S32-AI
• Description: AT91 ARM Thumb-based Microcontrollers
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 96. Master Read with One Byte Internal Address and Multiple Data Bytes
6071A–ATARM–28-Oct-04
TXCOMP
RXRDY
TWD
S
Write START Bit
DADR
W
•
•
•
•
•
•
Figure 97 below shows a byte write to an Atmel AT24LC512 EEPROM. This demonstrates the
use of internal addresses to access the device.
Figure 97. Internal Address Usage
S = Start
P = Stop
W = Write/Read
A = Acknowledge
DADR= Device Address
IADR = Internal Address
A
IADR(7:0)
R
S
T
A
T
M
S
B
Address
Device
A
0
S
B
S
L
W
R
W
T
E
R
I
/
C
A
K
WORD ADDRESS
DADR
M
S
B
FIRST
AT91SAM7S32 Preliminary
R
A
C
K
WORD ADDRESS
A
SECOND
DATA
L
S
B
A
C
K
Read RHR
DATA
A
Write STOP Bit
DATA
C
A
K
O
S
T
P
Read RHR
N
P
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