mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 98

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Memories and Memory Interfaces
For all chips, the RAM has partitions that operate as a single unit:
For example, for the MCF51JF128, RAM3 is a 24 KB partition.
3.6.1.3 RAM retention in low power modes
The RAM1, RAM2, and RAM3 partitions are retained in low power modes down to
VLLS3 mode.
In VLLS2 mode: The RAM1 partition is powered, the RAM2 partition is optionally
powered using the RAM2PO bit, and the RAM3 partition is not powered.
In VLLS1 mode: The RAM1, RAM2, and RAM3 partitions are not powered. However,
the
3.6.1.4 RAM accesses
The RAM's interface with the crossbar switch is 32 bits wide.
3.6.2 Flash Memory Controller (FMC) Configuration
This section summarizes how the module has been configured in the chip. For a
comprehensive description of the module itself, see the module’s dedicated chapter.
98
MCF51JF32
MCF51JF64
MCF51JF128
Chip
• RAM1: 1 KB partition
• RAM2: 7 KB partition
• RAM3: 0 KB, 8 KB, or 24 KB partition (according to the total sizes in the preceding
32-byte register file
table)
remains available in VLLS1 mode.
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Preliminary
8
16
32
RAM (KB)
Freescale Semiconductor, Inc.