ASAHI KASEI
SERIAL ACCESS
Serial access can be done by CSN staying “L” during the serise of write cycle.
CSN
SCLK
DATA
Z
1
2
3
4
5
6
7
8
9
16
1
2
3
4
8
9
[AK2307/LV]
15
16
1
1
1
0
0
0
0
*
D7
D0
Z
1
1
1
1
D7
D1 D0
Write data
Z
Instruction
Code
Address
”0000”
Write data to
Address”000”
EXCUTE!
Instruction
Code
EXCUTED!
READ
Continuous SCLK
Can be going up at anytime
after SCLK 16
th
pulse and before 32
nd
pulse
CSN
SCLK
DATA
Z
1
2
3
4
5
6
7
8
9
16
1
2
3
4
8
9
15
16
1
1
0
A3 A2
A1 A0
Z
D7
D0
Z
1
1
1
0
D7
D1 D0
Z
Read
Instruction
Address
Read Data
Read
Instruction
Read Data
Data output starts at the falling edge of SCLK 8
th
pulse
Read period
until the earlier edge of either CSN rising or SCLK 16
th
pulse
falling
Burst SCLK
Can be going up at anytime
after SCLK 16
th
pulse and before 32
nd
pulse
CSN
SCLK
DATA
Z
1
2
3
4
5
6
7
8
9
16
1
1
0
A3 A2
A1 A0
Z
D7
Read Data
D0
Z
Read
Instruction
Address
Read output starts at the falling edge of SCLK 8
th
pulse
MS0190-E-05
8
2005/12
AKM [ ASAHI KASEI MICROSYSTEMS ]
