M24LR16E-RDW6T/2 STMicroelectronics, M24LR16E-RDW6T/2 Datasheet - Page 30

• 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
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4.4
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Configuration byte access in I²C and RF modes
In I²C mode, read and write accesses to the non-volatile Configuration byte are always
allowed. To access the Configuration byte, the device select code used for any I²C
command must have the E2 Chip enable address at 1.
The dedicated commands to access the Configuration byte in RF mode are:
The ReadCfg command is used to read the eight bits of the Configuration byte.
The WriteEHCfg command is used to write the EH_mode, EH_cfg1 and EH_cfg0 bits into
the Configuration byte.
The WriteDOCfg command is used to write the RF WIP/BUSY bit into the Configuration
byte.
After any write access to the Configuration byte, the new configuration is automatically
applied.
Control register access in I²C or RF mode
In I²C mode, read and write accesses to the volatile Control register are always allowed. To
access the Control register, the device select code used for any I²C command must have the
E2 Chip enable address at 1.
The dedicated commands to access the Control register in RF mode are:
The CheckEHEn command is used to read the eight bits of the Control register. When it is
run, the FIELD_ON bit is always read at 1.
The SetRstEHEn command is used to set or reset the value of the EH_enable bit into the
Control register.
ISO 15693 system parameters
The M24LR16E-R provides the system area required by the ISO 15693 RF protocol, as
shown in
The first 32-bit block starting from I
is used to activate/deactivate the write protection of the protected sector in I
power-on, all user memory sectors protected by the I2C_Write_Lock bits can be read but
cannot be modified. To remove the write protection, it is necessary to use the I
password described in
all the presented bits correspond to the stored ones — it is also possible to modify the I
password using the I2C write password command described in
The next three 32-bit blocks store the three RF passwords. These passwords are neither
read- nor write- accessible in the I
Read configuration byte command (ReadCfg):
Write energy harvesting configuration command (WriteEHCfg):
Write RF WIP/BUSY pin configuration command (WriteDOCfg):
Check energy harvesting enable bit command (CheckEHEn):
Set/reset energy harvesting enable bit command (SetRstEHEn):
Table
17.
Figure
Doc ID 018932 Rev 8
12. When the password is correctly presented — that is, when
2
2
C mode.
C address 2304 stores the I
2
Figure
C password. This password
13.
2
C mode. At
M24LR16E-R
2
C present
2
C