5.12 Boot Mode Pin
Boot mode pins 47, 49 of the A Connector determines how the module boot. The following table lists the possible options of the boot
mode:
BOOT_MODE1 (PIN 49)
BOOT_MODE0 (PIN 47)
Action
0
0
Boot From Fuses
0
1
Serial Downloader
1
0
Internal Boot
(DEFAULT)
1
1
Reserved
Table 19
BOOT_MODE 0 pin has a 10K pull-down on module
BOOT_MODE 1 pin has a 10K pull-up on module
D N :
3 9