CDR3 Flash (UC3F) EEPROM
MPC561/MPC563 Reference Manual, Rev. 1.2
21-2
Freescale Semiconductor
Figure 21-1. Block Diagram for a 512 Kbyte UC3F Module Configuration
The UC3F EEPROM module array is divided into array blocks to allow for independent erase, address
attributes restrictions, and protection from program and erase for each array block. The size of a large array
block in the UC3F module is fixed at 64 Kbytes. The size of a subdivided large block becomes the original
large array block size minus 16 Kbytes (64 Kbytes – 16 Kbytes = 48 Kbytes). The size of the small block,
which is the remainder of the large block, is always 16 Kbytes. The total UC3F EEPROM array is
distributed into eight large blocks, two of which contain small blocks. Information is transferred to the
UC3F EEPROM by long-word (64 bits), word (32 bits), half-word (16 bits), or byte (8 bits).
To improve system performance, each array read access retrieves 32 bytes of information. These 32 bytes
may be copied into one of two read page buffers aligned to the low order addresses. The two read page
buffers are independently updated by page management logic contained in the BIU which interfaces to the
UC3F EEPROM module.
Block 0 (16 48 Kbytes)
Block 1 (48 16 Kbytes)
Block 2 (64 Kbytes)
Block 3 (64 Kbytes)
Block 4 (64 Kbytes)
Block 5 (64 Kbytes)
Block 6 (64 Kbytes)
Block 7 (64 Kbytes)
Column Decode
R
o
w
D
e
co
d
e
Pgm Data
Latch
Ad
d
re
ss
L
a
tch
Read Page Buffer 0
Read Page Buffer 1
Data Mux
Program/Erase
Control
Program/Erase
Voltage
Generation
Read Control
Internal
Timer
Register
Block
Memory Interface (MI)
UC3F Array Core
VSSF
VDDF
VFLASH
Bus Interface Unit (BIU)
U-Bus
EPEE
B0EPEE
Summary of Contents for MPC561
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Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
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Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...