ATSAME70Q21B NVM user row & fuses

A SAM chip has no fuse bytes: its start-up settings are words in the flash's user row and the factory's calibration rows, at the addresses shown. The user row sets the bootloader protection, the EEPROM emulation area, the brown-out detector and the watchdog at power-on; the program reads them, and a programmer writes them. Microchip's file gives no factory values for these words, so they start at all ones (an erased row): the datasheet's NVM User Row table has the values the chip ships with. Change a setting and the word below updates.

GPNVMBITS · 0x00000000

0x00FFerased: no factory value in the file

TCM_CONFIGURATIONTCM ConfigurationBOOT_MODEBoot Mode SelectionSECURITY_BITSecurity Bit

Lock bits

0xFFFFFFFFerased: no factory value in the file

LOCK_REGION_30Lock Region 30LOCK_REGION_29Lock Region 29LOCK_REGION_28Lock Region 28LOCK_REGION_27Lock Region 27LOCK_REGION_26Lock Region 26LOCK_REGION_25Lock Region 25LOCK_REGION_24Lock Region 24LOCK_REGION_23Lock Region 23LOCK_REGION_22Lock Region 22LOCK_REGION_21Lock Region 21LOCK_REGION_20Lock Region 20LOCK_REGION_19Lock Region 19LOCK_REGION_18Lock Region 18LOCK_REGION_17Lock Region 17LOCK_REGION_16Lock Region 16LOCK_REGION_15Lock Region 15LOCK_REGION_14Lock Region 14LOCK_REGION_13Lock Region 13LOCK_REGION_12Lock Region 12LOCK_REGION_11Lock Region 11LOCK_REGION_10Lock Region 10LOCK_REGION_9Lock Region 9LOCK_REGION_8Lock Region 8LOCK_REGION_7Lock Region 7LOCK_REGION_6Lock Region 6LOCK_REGION_5Lock Region 5LOCK_REGION_4Lock Region 4LOCK_REGION_3Lock Region 3LOCK_REGION_2Lock Region 2LOCK_REGION_1Lock Region 1LOCK_REGION_0Lock Region 0LOCK_REGION_31Lock Region 31

Lock bits

0xFFFFFFFFerased: no factory value in the file

LOCK_REGION_62Lock Region 62LOCK_REGION_61Lock Region 61LOCK_REGION_60Lock Region 60LOCK_REGION_59Lock Region 59LOCK_REGION_58Lock Region 58LOCK_REGION_57Lock Region 57LOCK_REGION_56Lock Region 56LOCK_REGION_55Lock Region 55LOCK_REGION_54Lock Region 54LOCK_REGION_53Lock Region 53LOCK_REGION_52Lock Region 52LOCK_REGION_51Lock Region 51LOCK_REGION_50Lock Region 50LOCK_REGION_49Lock Region 49LOCK_REGION_48Lock Region 48LOCK_REGION_47Lock Region 47LOCK_REGION_46Lock Region 46LOCK_REGION_45Lock Region 45LOCK_REGION_44Lock Region 44LOCK_REGION_43Lock Region 43LOCK_REGION_42Lock Region 42LOCK_REGION_41Lock Region 41LOCK_REGION_40Lock Region 40LOCK_REGION_39Lock Region 39LOCK_REGION_38Lock Region 38LOCK_REGION_37Lock Region 37LOCK_REGION_36Lock Region 36LOCK_REGION_35Lock Region 35LOCK_REGION_34Lock Region 34LOCK_REGION_33Lock Region 33LOCK_REGION_32Lock Region 32LOCK_REGION_63Lock Region 63

Lock bits

0xFFFFFFFFerased: no factory value in the file

LOCK_REGION_94Lock Region 94LOCK_REGION_93Lock Region 93LOCK_REGION_92Lock Region 92LOCK_REGION_91Lock Region 91LOCK_REGION_90Lock Region 90LOCK_REGION_89Lock Region 89LOCK_REGION_88Lock Region 88LOCK_REGION_87Lock Region 87LOCK_REGION_86Lock Region 86LOCK_REGION_85Lock Region 85LOCK_REGION_84Lock Region 84LOCK_REGION_83Lock Region 83LOCK_REGION_82Lock Region 82LOCK_REGION_81Lock Region 81LOCK_REGION_80Lock Region 80LOCK_REGION_79Lock Region 79LOCK_REGION_78Lock Region 78LOCK_REGION_77Lock Region 77LOCK_REGION_76Lock Region 76LOCK_REGION_75Lock Region 75LOCK_REGION_74Lock Region 74LOCK_REGION_73Lock Region 73LOCK_REGION_72Lock Region 72LOCK_REGION_71Lock Region 71LOCK_REGION_70Lock Region 70LOCK_REGION_69Lock Region 69LOCK_REGION_68Lock Region 68LOCK_REGION_67Lock Region 67LOCK_REGION_66Lock Region 66LOCK_REGION_65Lock Region 65LOCK_REGION_64Lock Region 64LOCK_REGION_95Lock Region 95

Lock bits

0xFFFFFFFFerased: no factory value in the file

LOCK_REGION_126Lock Region 126LOCK_REGION_125Lock Region 125LOCK_REGION_124Lock Region 124LOCK_REGION_123Lock Region 123LOCK_REGION_122Lock Region 122LOCK_REGION_121Lock Region 121LOCK_REGION_120Lock Region 120LOCK_REGION_119Lock Region 119LOCK_REGION_118Lock Region 118LOCK_REGION_117Lock Region 117LOCK_REGION_116Lock Region 116LOCK_REGION_115Lock Region 115LOCK_REGION_114Lock Region 114LOCK_REGION_113Lock Region 113LOCK_REGION_112Lock Region 112LOCK_REGION_111Lock Region 111LOCK_REGION_110Lock Region 110LOCK_REGION_109Lock Region 109LOCK_REGION_108Lock Region 108LOCK_REGION_107Lock Region 107LOCK_REGION_106Lock Region 106LOCK_REGION_105Lock Region 105LOCK_REGION_104Lock Region 104LOCK_REGION_103Lock Region 103LOCK_REGION_102Lock Region 102LOCK_REGION_101Lock Region 101LOCK_REGION_100Lock Region 100LOCK_REGION_99Lock Region 99LOCK_REGION_98Lock Region 98LOCK_REGION_97Lock Region 97LOCK_REGION_96Lock Region 96LOCK_REGION_127Lock Region 127