M24LR16E-RDW6T/2 STMicroelectronics, M24LR16E-RDW6T/2 Datasheet - Page 26

• Manufacturer Part Number: M24LR16E-RDW6T/2
• Description: EEPROM 16kB EEPROM Dual INT 400 kHz IC2 13.56MHz
• Manufacturer: STMicroelectronics

Specifications of M24LR16E-RDW6T/2

• Product Category: EEPROM
• Rohs: yes
• Memory Size: 16 Kbit
• Organization: 256 x 8
• Data Retention: 40 yr
• Maximum Clock Frequency: 400 KHz
• Maximum Operating Current: 50 mA
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-8
• Access Time: 900 ns
• Interface Type: 2-Wire Serial, I2C
• Minimum Operating Temperature: -40 C
• Operating Current: 50 mA

System memory area
4.1.1
26/143
Example of the M24LR16E-R security protection in RF mode
Table 11
sector password command.
after power-up. After a valid Present-sector password command with password 1, the
memory sector access is changed as shown in
Table 11.
Table 12.
address
address
Sector
Sector
0
1
2
3
4
0
1
2
3
4
Present-sector password:
The Present-sector password command is used to present one of the three passwords
to the M24LR16E-R in order to modify the access rights of all the memory sectors
linked to that password
password is correct, the access rights remain activated until the tag is powered off or
until a new Present-sector password command is issued. If the presented password
value is not correct, all the access rights of all the memory sectors are deactivated.
Sector security status byte area access conditions in I2C mode:
In I
Write access depends on the correct presentation of the I
Section 5.16.1: I2C present password command
To access the Sector security status byte area, the device select code used for any I
command must have the E2 Chip Enable address at 1.
An I
condition to the given memory sector.
2
2
C mode, read access to the sector security status byte area is always allowed.
and
C write access to a sector security status byte re-initializes the RF access
Protection: standard
Protection: pswd 1
Protection: pswd 1
Protection: pswd 1
Protection: pswd 1
Protection: standard
Protection: pswd 1
Protection: pswd 1
Protection: pswd 1
Protection: pswd 1
M24LR16E-R sector security protection after power-up
M24LR16E-R sector security protection after a valid presentation of
password 1
Table 12
show the sector security protections before and after a valid Present-
Table 11
(Table
Doc ID 018932 Rev 8
Read
Read
Read
Read
Read
Read
Read
Read
No Read
No Read
8) including the password itself. If the presented
shows the sector access rights of an M24LR16E-R
Table
No Write
Write
Write
Write
No Write
No Write
No Write
Write
No Write
No Write
12.
description).
2
b
b
C password (see
Sector security status byte
Sector security status byte
7
7
b
xxx
xxx
xxx
xxx
xxx
b
xxx
xxx
xxx
xxx
xxx
6
6
b
b
5
5
b
b
0
0
0
0
0
0
0
0
0
0
4
4
b
b
0
1
1
1
1
0
1
1
1
1
3
3
M24LR16E-R
b
b
0
0
0
1
1
0
0
0
1
1
2
2
b
b
0
0
1
0
1
0
0
1
0
1
1
1
b
b
2
1
1
1
1
1
1
1
1
1
1
0
0
C