AT24MAC402 ATMEL [ATMEL Corporation], AT24MAC402 Datasheet - Page 12

• Manufacturer Part Number: AT24MAC402
• Description: I2C-Compatible (2-wire) 2-Kbit Serial EEPROM
• Manufacturer: ATMEL [ATMEL Corporation]

on page 12
sending a command ‘01100110’(66h) with the A
tied to V
Reversible Software Write Protection function is not available on the SOT23 package.
Hardware Write Protection: The WP pin can be connected to V
will write protect the entire array regardless of whether or not the Software Write Protection has been enabled or invoked
(see
when the WP pin is connected to V
determined by the status of the Software Write Protect Register.
Figure 7-1. Setting Permanent Write Protect Register (PSWP)
Figure 7-2. Setting Reversible Write Protect Register (RSWP)
Figure 7-3. Clearing Reversible Write Protect Register (RSWP)
SDA LINE
SDA LINE
SDA LINE
Table 7-3 on page 13
HV
(see
and
Figure 7-3 on page 12
Table 7-2 on page
R
S
T
A
T
R
S
T
A
R
T
S
T
A
T
0 1 1 0 A2 A1 A0 0
0 1 1 0
0 1 1 0
Control Byte
Control Byte
Control Byte
and
0 0
0 1
Table 7-4 on page
1
1
0
0
13). The Reversible Write Protection Register or Write Protection can be reversed by
CC
C
A
K
C
A
K
. If the WP pin is connected to GND or left floating, the write protection mode is
C
K
A
and
Word Address
Word Address
Table 7-2 on page
Word Address
= Don’t Care
= Don’t Care
= Don’t Care
2
14). The Software Write Protection Register cannot be programmed
pin tied to ground or no connect, the A
C
A
K
A
C
K
C
A
K
13). Due to the unavailability of the A
Data
Data
CC
Data
, GND, or left floating. Connecting the WP pin to V
Atmel AT24MAC402/602 [DATASHEET]
C
A
K
C
K
A
C
K
A
O
S
T
P
S
O
P
T
S
O
P
T
1
pin tied to V
2
8807A–SEEPR–6/12
, A
1
, and A
CC
and the A
0
pins, the
0
pin
CC
12