Information

SIM_FCFG2 field descriptions
Field Description
31
SWAPPFLSH
Swap program flash
Indicates that swap is active.
0 Swap is not active.
1 Swap is active.
30
Reserved
This read-only field is reserved and always has the value zero.
29–24
MAXADDR0
Max address block 0
This field concatenated with 13 zeros indicates the first invalid address of flash block 0 (program flash 0).
For example, if MAXADDR0 = 0x20 the first invalid address of flash block 0 is 0x0004_0000. This would
be the MAXADDR0 value for a device with 256 KB program flash in flash block 0.
23
PFLSH
Program flash
0 Reserved
1 Physical flash block 1 is used as program flash
22
Reserved
This read-only field is reserved and always has the value zero.
21–16
MAXADDR1
Max address block 1
This field concatenated with 13 zeros plus the value of the MAXADDR1 field indicates the first invalid
address of the second program flash block (flash block 1).
For example, if MAXADDR0 = MAXADDR1 = 0x20 the first invalid address of flash block 1 is 0x4_0000 +
0x4_0000. This would be the MAXADDR1 value for a device with 512 KB program flash memory and no
FlexNVM.
15–0
Reserved
This read-only field is reserved and always has the value zero.
12.2.19 Unique Identification Register High (SIM_UIDH)
Address: SIM_UIDH is 4004_7000h base + 1054h offset = 4004_8054h
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
UID
W
Reset
x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x*
* Notes:
x = Undefined at reset.•
Chapter 12 System integration module (SIM)
K20 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc. 289