ASAHI KASEI
[AK2573A]
8. I2CTM I/F
8.1 Memory Map
Table 8-1 shows the EEPROM / Register address map. Accessto memory(EEPROM / registers) is donevia theI2CTM
I/F format.
WP (Write Protect) may limit the access of memory as shown in Table 8 -2.
Table 8-1 Memory map
Device Address Device Address-1 Device Address-2
Address
00000000 to
01111111
10000000 to
11111111
00000000 to
11111111
00000000 to
11111111
00000000 to
01111111
10000000 to
11111111
00000000 to
00011001
00011010 to
11111110
Data
A0h
A0h
A2h
A4h
A6h
A6h
A8h
A8h
A8h
1010
1010
1010
1010
1010
1010
1010
1010
1010
000
000
001
010
011
011
100
100
100
User Area
(EEPROM, 1kbit)
No memory
No memory
Adjustment data
(EEPROM, 3kbit)
No memory
Registers
No memory
11111111
AK2573A Operation mode
change
Table 8-2 Memory access limitation with WP
Item
WP = “L”
1010xxx
when receive device address
Full access
WP = “H”
1010000
when receive device address
User area only (read only)
Device Address
ACK (Note 1)
EEPROM / Register
Access
Operating mode
Page Write
Sequential Read
Registers Access
Full
Self runnig mode only
16 byte (without registers)
from 00000000000 to 01111111111
Random access only
-
from 00000000 to 01111111
-
Note 1) During EEPROM Write operation, no ACK is generated.
<MS0189-E-01>
-28-
2004/5
AKM [ ASAHI KASEI MICROSYSTEMS ]
