USER MANUAL
STM 550X / EMSIX
–
ENOCEAN MULTI-SENSOR
© 2020 EnOcean | www.enocean.com F-710-017, V1.0
STM 550x / EMSIx User Manual | v1.0 | February 2020 | Page 45/79
8
NFC registers
The NFC memory is organized in pages (smallest addressable unit) where each page contains
4 byte of data. Several pages with similar functionality form an NFC memory area.
8.1
NFC memory areas
These NFC pages are allocated into the following areas:
◼
Device Identification NDEF string (Public read-only access; no PIN required)
This area contains an NDEF string identifying key device parameters
◼
User Information NDEF string (Public read / write access; no PIN required)
This area allows any user to read or write information about the device such as the
intended installation location or additional instructions
◼
PUBLIC INFO (Public read-only access; no PIN required)
This area contains key device parameters in binary format
◼
NFC HEADER (Public read-only access; no PIN required)
This area contains information about the NFC revision
◼
INTERNAL DATA (Non-accessible)
This area contains calibration values and internal parameters and cannot be used
◼
CONFIGURATION (Read and Write access, PIN required)
This area contains device configuration registers
◼
USER DATA (Read and Write access, PIN required)
This area allows the user to store up to 64 byte of data such as information about the
installation or any other data that the user deems relevant.
STM 550x does not use this area and does not interpret its content in any way.
The organization of the STM 550x NFC memory map is shown in Table 8 below.
NFC Address
Memory Area
Content
0x00 …
0x1D
PRODUCT NDEF
Device identification NDEF string (read-only)
0x1E
… 0x
30
USER NDEF
User information NDEF string (read / write access)
0x31
… 0x
33
NFC HEADER
NFC memory revision (read-only)
0x34
… 0x3F
INTERNAL DATA
Internal data (Do not use)
0x40 … 0x
52
CONFIGURATION
Configuration registers (Read / Write, PIN protected)
0x53
… 0xCF
INTERNAL DATA
Internal data (Do not use)
0xD0 … 0xDF
USER DATA
User data (64 byte read / write access, PIN protected)
0xE0 … 0xEB
INTERNAL DATA
Internal data (Do not use)
Table 8
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STM 550x NFC memory areas
