Info Page; Eraseinfopage; Writeinfopage; Table 2-16: Eraseinfopage Command - Semtech LR1121 User Manual

Table 2-15: Mode Transitions and Timings (Continued)
Transition
RX to FS
RX to TX

2.5 Info Page

The LR11xx flash memory contains an Info Page of 512 32-bit words, on which the host controller can store user data.
Note: the maximum number of LR11x flash memory R/W accesses is 10k cycles.

2.5.1 EraseInfoPage

The command EraseInfoPage(...) erases the requested Info Page in the LR11xx flash memory.

Table 2-16: EraseInfoPage Command

Byte
Data from Host
Data to Host
• InfoPage: can only be 1
• Other values are RFU

2.5.2 WriteInfoPage

The command WriteInfoPage(...) writes a block of 32-bit words in the Info Page flash memory space starting at a
specific word address.

Table 2-17: WriteInfoPage Command

Byte
Data from Host
Data to Host
LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
T Mode Typical value (s)
SW
0
0x01
Stat1
0 1 2
0x01 0x22 InfoPage
IrqStatus
Stat1 Stat2
(31:24)
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25
118
1
0x21
Stat2
3 4
InfoWordAddr InfoWordAddr
(15:8) (7:0)
IrqStatus IrqStatus
(23:16) (15:8)
2
InfoPage
IrqStatus (31:24)
5 6 7
data1 data1 data1
(31:24) (23:16) (15:8)
IrqStatus
0 0
(7:0)
23 of 130
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