M24LR16E-RDW6T/2 STMicroelectronics, M24LR16E-RDW6T/2 Datasheet - Page 81

• 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

M24LR16E-R
26.1
Inventory
When receiving the Inventory request, the M24LR16E-R runs the anticollision sequence.
The Inventory_flag is set to 1. The meaning of flags 5 to 8 is shown in
The request contains:
The M24LR16E-R does not generate any answer in case of error.
Table 37.
The response contains:
Table 38.
During an Inventory process, if the VCD does not receive an RF M24LR16E-R response, it
waits for a time t
edge of the request EOF sent by the VCD.
where:
t
modulation mode.
When configured in the RF busy mode, the RF WIP/BUSY pin is tied to 0 from the SOF
starting the inventory command to the end of the M24LR16E-R response. If the M24LR16E-
R does not receive the corresponding slot marker, the RF WIP/BUSY pin remains at 0 until
the next RF power-off.
NRT
Response
Request
SOF
SOF
the flags,
the Inventory command code (see
the AFI if the AFI flag is set,
the mask length,
the mask value,
the CRC.
the flags,
the Unique ID.
If the VCD sends a 100% modulated EOF, the minimum value of t
t
If the VCD sends a 10% modulated EOF, the minimum value of t
t
t
t
and t
3
3
SOF
NRT
min = 4384/f
min = 4384/f
is the time required by the M24LR16E-R to transmit an SOF to the VCD,
is the nominal response time of the M24LR16E-R.
SOF
Request_flags Inventory
Response_
Inventory request format
Inventory response format
are dependent on the M24LR16E-R-to-VCD data rate and subcarrier
8 bits
flags
8 bits
3
before sending an EOF to switch to the next slot. t
C
C
(323.3µs) + t
(323.3µs) + t
DSFID
8 bits
01h
Doc ID 018932 Rev 8
SOF
NRT
Optional
Table
8 bits
AFI
36),
64 bits
UID
length
Mask
8 bits
0 - 64 bits
Mask
value
3
3
starts from the rising
Table
3
CRC16
is:
16 bits
is:
Command codes
CRC16
16 bits
29.
Response
Request
EOF
EOF
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