NXP Semiconductors MPC5644A, Reference Manual, Page: 224 / 1735

Flash memory
MPC5644A Microcontroller Reference Manual, Rev. 6
224 Freescale Semiconductor
Offset 0x0000 Access: User read/write
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R 0 0 0 0 0 SIZE 0 LAS 0 0 0 MAS
W
Reset 0 0 0 0 0 0 1 1 0 1 1 0 0 0 0 0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R
EER RWE SBC 0
PE
AS
DONE
PEG 0 0 0 0
PGM
PS
US
ERS
ES
US
EHV
W w1c w1c w1c
Reset 0 0 0 0 0 0/1 1 0 0 0 0 0 0 0 0 0
Figure 12-3. Module Configuration Register (MCR)
Table 12-4. MCR field description
Field Description
SIZE[2:0] Array Space Size
The value of the SIZE field is dependent upon the size of the flash module. SIZE is read only.
000: 128 KB (Only LAS option for this size is LAS = 2, and consists of two 16 KB and two 48 KB blocks,
128 KB of LAS available, and no MAS or HAS available)
001: 256 KB (Only LAS option for this size is LAS = 1, and LAS = 2, no MAS or HAS available)
010: 512 KB (Any LAS or MAS option is available, no HAS available)
011: 1.0 MB (256 KB of LAS, 256 KB of MAS, and 512 KB of HAS)
100: 1.5 MB (256 KB of LAS, 256 KB of MAS, and 1 MB of HAS)
101: 2.0 MB (256 KB of LAS, 256 KB of MAS, and 1.5 MB of HAS)
110: Reserved
111: Reserved
LAS[2:0] Low-Address Space
The value of the LAS field corresponds to the configuration of the Low-Address Space. LAS is read only.
000: One 256 KB block
001: Two 128 KB blocks
010: Four 16 KB, four 48 KB blocks
011: Reserved
100: Eight 16 KB, two 64 KB blocks
101: Reserved
110: Two 16 KB, two 48 KB, two 64 KB blocks
111: Reserved
MAS Mid-Address Space
The value of the MAS field corresponds to the configuration of the Mid-Address Space. MAS is read only.
0: Two 128 KB blocks
1: One 256 KB block (Only available if LAS = 0)