m24lr16e-r STMicroelectronics, m24lr16e-r Datasheet - Page 121

• 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
Figure 77. SetRstEHEn frame exchange between VCD and M24LR16E-R
26.27
M24LR16E-R
M24LR16E-R
VCD
When configured in the RF busy mode, the RF WIP/BUSY pin is tied to 0 from the SOF that
starts the SetRstEHEn 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.
CheckEHEn
On receiving the CheckEHEn command, the M24LR16E-R reads the Control register and
sends back its 8-bit value in the response.
The Protocol_extension_flag should be set to 0 for the M24LR16E-R to operate correctly. If
the Protocol_extension_flag is at 1, the M24LR16E-R answers with an error code. The
Option_flag is not supported. The Inventory_flag must be set to 0.
Table 115. CheckEHEn request format
1. Gray means that the field is optional.
Request parameters:
●
Table 116. CheckEHEn response format when Error_flag is NOT set
Response parameters:
●
Response SOF
Request
SOF
UID (optional)
One byte of data: volatile Control register (see
SOF
Request_
SetRstEHEn
flags
8 bits
request
Response_flags
CheckEHEn
A3h
8 bits
EOF
Doc ID 018932 Rev 7
<-t
<-t
1
1
-> SOF
-> SOF
IC Mfg code
02h
SetRstEHEn
SetRstEHEn
8 bits
Data
response
response
Table
64 bits
UID
15)
(1)
EOF
EOF
CRC16
16 bits
WriteEHCfg sequence
WriteEHCfg sequence
CRC16
16 bits
when no error
Command codes
when error
Response
EOF
Request
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EOF