AT34C02C_08 データシートの表示（PDF） - Atmel Corporation
部品番号
コンポーネント説明
メーカー
AT34C02C_08
Atmel Corporation
AT34C02C_08 Datasheet PDF : 25 Pages
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Figure 7-1. Setting Permanent Write Protect Register (PSWP)
SDA LINE
S
T
CONTROL
A
BYTE
R
T
0 1 1 0 A2 A1 A0 0
WORD
ADDRESS
S
DATA
T
O
P
A
A
A
C
C
C
K
K
K
= Don't Care
Figure 7-2. Setting Reversible Write Protect Register (RSWP)
SDA LINE
S
T
CONTROL
A
BYTE
R
T
WORD
ADDRESS
S
DATA
T
O
P
01100 010
A
A
A
C
C
C
K
K
K
= Don't Care
Figure 7-3. Clearing Reversible Write Protect Register (RSWP)
SDA LINE
S
T
CONTROL
A
BYTE
R
T
WORD
ADDRESS
S
DATA
T
O
P
01100 110
A
A
A
C
C
C
K
K
K
= Don't Care
Table 7-1. Write Protection
Pin
Preamble
RW
Command
A2 A1 A0 B7 B6 B5 B4 B3 B2 B1 B0
Set PSWP
A2 A1 A0
0
1
1
0 A2 A1 A0 0
Set RSWP
0
0 VHV 0
1
1
0
0
0
1
0
Clear RSWP 0
1 VHV 0
1
1
0
0
1
1
0
Table 7-2. VHV
Min
VHV
7
Note: VHV - VCC > 4.8V
Max
Units
10
V
10 AT34C02C
5185D–SEEPR–1/08
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