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M24LR04E-R 数据表(PDF) 109 Page - STMicroelectronics

部件名 M24LR04E-R
功能描述  4-Kbit EEPROM with password protection, dual interface & energy harvesting: 400 kHz I²C bus & ISO 15693 RF protocol at 13.56 MHz
PDF  142 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M24LR04E-R 数据表(HTML) 109 Page - STMicroelectronics

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M24LR04E-R
Command codes
Doc ID 022208 Rev 5
109/142
The Response contains:
●
the flags,
●
the Unique ID.
During an Inventory process, if the VCD does not receive an RF M24LR04E-R response, it
waits for a time t3 before sending an EOF to switch to the next slot. t3 starts from the rising
edge of the request EOF sent by the VCD.
●
If the VCD sends a 100% modulated EOF, the minimum value of t3 is:
t3min = 4384/fC (323.3µs) + tSOF
●
If the VCD sends a 10% modulated EOF, the minimum value of t3 is:
t3min = 4384/fC (323.3µs) + tNRT
where:
●
tSOF is the time required by the M24LR04E-R to transmit an SOF to the VCD
●
tNRT is the nominal response time of the M24LR04E-R
tNRT and tSOF are dependent on the M24LR04E-R-to-VCD data rate and subcarrier
modulation mode.
When configured in the RF busy mode, the RF WIP/BUSY pin is driven to 0 from the SOF
starting the inventory command to the end of the M24LR04E-R response.If the M24LR04E-
R does not receive the corresponding slot marker, the RF WIP/BUSY pin remains at 0 till the
next RF power-off.
When configured in the RF write in progress mode, the RF WIP/BUSY pin remains in high-Z
state.
Table 91.
Fast Inventory Initiated response format
Response
SOF
Response
_flags
DSFID
UID
CRC16
Response
EOF
8 bits
8 bits
64 bits
16 bits



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