M24LR64-RMN6/2 STMicroelectronics, M24LR64-RMN6/2 Datasheet - Page 109

• Manufacturer Part Number: M24LR64-RMN6/2
• Description: EEPROM, 64K, DUAL INTERFACE, 8SOIC
• Manufacturer: STMicroelectronics

Specifications of M24LR64-RMN6/2

• Memory Size: 64Kbit
• Clock Frequency: 400kHz
• Access Time: 900ns
• Supply Voltage Range: 1.8V To 5V
• Memory Case Style: SOIC
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC
• Memory Configuration: 8192 X 8, 2048 X 32
• Interface Type: I2C, Serial, 2-Wire
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

M24LR64-R
26.21
Inventory Initiated
Before receiving the Inventory Initiated command, the M24LR64-R must have received an
Initiate or a Fast Initiate command in order to set the Initiate_ flag. If not, the M24LR64-R
does not answer to the Inventory Initiated command.
On receiving the Inventory Initiated request, the M24LR64-R runs the anticollision
sequence. The Inventory_flag must be set to 1. The meaning of flags 5 to 8 is given in
Table 26: Request flags 5 to 8 when Bit 3 =
The request contains:
●
●
●
●
●
●
The M24LR64-R does not generate any answer in case of error.
Table 95.
The response contains:
●
●
Table 96.
During an Inventory process, if the VCD does not receive an RF M24LR64-R response, it
waits a time t
of the request EOF sent by the VCD.
●
●
where:
●
●
t
modulation mode.
NRT
Response
Request
SOF
SOF
the flags,
the Inventory Command code
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 M24LR64-R to transmit an SOF to the VCD
is the nominal response time of the M24LR64-R
SOF
Request
_flags
Response
8 bits
Inventory Initiated request format
Inventory Initiated response format
3
_flags
are dependent on the M24LR64-R-to-VCD data rate and subcarrier
8 bits
before sending an EOF to switch to the next slot. t
C
C
Inventory
Initiated
(323.3µs) + t
(323.3µs) + t
D1h
DSFID
8 bits
Doc ID 15170 Rev 11
code
Mfg
02h
IC
SOF
NRT
Optional
8 bits
AFI
1.
64 bits
length
Mask
8 bits
UID
Mask value
0 - 64 bits
3
starts from the rising edge
3
CRC16
3
16 bits
is:
Commands codes
is:
CRC16
16 bits
Response
Request
EOF
EOF
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