NXP Semiconductors K22F series, Reference Manual, Page: 646 / 1407

Supervisor-only access register Program Flash IFR address A Program Flash IFR address B
SACCL0 0xB7 0xBF
SACCL1 0xB6 0xBE
SACCL2 0xB5 0xBD
SACCL3 0xB4 0xBC
Use the Program Once command to program the supervisor-only access control fields
that are loaded during the reset sequence.
Address: 4002_0000h base + 20h (1d × i), where i=0d to 7d
Bit 7 6 5 4 3 2 1 0
Read SA
Write
Reset
x* x* x* x* x* x* x* x*
* Notes:
x = Undefined at reset. •
FTFA_SACCn field descriptions
Field Description
SA Supervisor-only access control
0 Associated segment is accessible in supervisor mode only
1 Associated segment is accessible in user or supervisor mode
29.3.3.9 Flash Access Segment Size Register (FTFA_FACSS)
The flash access segment size register determines which bits in the address are used to
index into the SACC and XACC bitmaps to get the appropriate permission flags.
All bits in the register are read-only.
The contents of this register are loaded during the reset sequence.
Address: 4002_0000h base + 28h offset = 4002_0028h
Bit 7 6 5 4 3 2 1 0
Read SGSIZE
Write
Reset x* x* x* x* x* x* x* x*
* Notes:
x = Undefined at reset. •
Memory Map and Registers
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
646 NXP Semiconductors