Motorola MPC533 Reference Manual page 830

Programming Model
Table 19-3. UC3FMCR Bit Descriptions (continued)
Bits Name
24:31 PROTECT Block protect. Each array block of the UC3F EEPROM can be individually protected from program
or erase operation. The contents of array block M are protected from program or erase by setting
PROTECT[M] = 1. The UC3F will perform all program and erase interlocks and complete the
program or erase sequence, but the program and erase voltages are not applied to locations within
the protected array block(s), blocks whose corresponding PROTECT bit is set to 1. By setting
PROTECT[M] = 0, array block M is enabled for program and erase operation, and its contents may
be altered by programming or erasing.
When the small block function is enabled, the enabled small block portion of an array block is not
controlled by the PROTECT bit corresponding to the array block containing that small block. This
particular small block is controlled by the appropriate SBPROTECT bit while the remainder of that
array block is controlled by its PROTECT bit.
0 array block m is unprotected
1 array block m is protected
1
Note that the LOCK bit is in a different bit location on the MPC533 than in the MPC555. It was at bit 0 of CMFMCR.
19.2.1.3 UC3F EEPROM Extended Configuration Register
(UC3FMCRE)
The UC3FMCRE is an extended module configuration register used for configuring the
small block functions. In addition, 16 bits of the UC3FMCRE are used to provide a source
for module identification.
MSB 1
0
Field SBEN
HRESET 0 0
16 17
Field MEMSIZ
HRESET 1 0
Addr
1 The value of FLASHID could change to show a revision of the UC3F module.
Figure 19-2. UC3FMCRE— UC3F EEPROM Extended Configuration Register
19-8
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
2 3 4 5
SBSUPV SBDATA
1 1 0 0
18 19 20 21
BLK MAP SBLKL
1 1 0
MPC533 Reference Manual
Description
6 7 8 9
SBPROTECT —
1 1 1 1
22 23 24 25
0x2F C804
10 11 12 13 14
BIU
00_0000
26 27 28 29 30
1
FLASHID
0_0000_0000
MOTOROLA
15
LSB
31