m24lr16e-r STMicroelectronics, m24lr16e-r Datasheet - Page 85

• Manufacturer Part Number: m24lr16e-r
• Description: 16 Kbit Eeprom With Password Protection, Dual Interface & Energy Harvesting 400 Khz I²c Bus & Iso 15693 Rf Protocol At 13.56 Mhz
• Manufacturer: STMicroelectronics

M24LR16E
26.4
Figure 54. Read Single Block frame exchange between VCD and M24LR16E-R
When configured in the RF busy mode, the RF WIP/BUSY pin is tied to 0 from the SOF that
starts the Read Single Block command to the end of the M24LR16E-R response.
When configured in the RF write in progress mode, the RF WIP/BUSY pin remains in high-Z
state.
Write Single Block
On receiving the Write Single Block command, the M24LR16E-R writes the data contained
in the request to the requested block and reports whether the write operation was
successful in the response. The Protocol_extension_flag should be set to 1 for the
M24LR16E-R to operate correctly. If the Protocol_extension_flag is at 0, the M24LR16E-R
answers with an error code. The Option_flag is supported.
During the RF write cycle W
otherwise, the M24LR16E-R may not program correctly the data into the memory. The W
time is equal to t
Table 44.
1. Gray means that the field is optional.
Request parameters:
●
●
●
●
Table 45.
Response parameter:
●
Request
M24LR16E-R
Response SOF
SOF
VCD
Request flags
UID (optional)
Block number
Data
No parameter. The response is send back after the writing cycle.
Request_
8 bits
flags
Write Single Block request format
Write Single Block response format when Error_flag is NOT set
SOF
1nom
Response_flags
Single
+ 18 × 302 µs.
Block
Write
Read Single Block
21h
8 bits
request
t
, there should be no modulation (neither 100% nor 10%),
Doc ID 018932 Rev 7
64 bits
UID
(1)
EOF
<-t
CRC16
number
1
16 bits
16 bits
Block
-> SOF
Read Single Block
32 bits
Data
response
Command codes
CRC16
Response EOF
16 bits
EOF
Request
EOF
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t