56F8167 datasheet(47/184 Pages) FREESCALE

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Data Map

56F8367 Technical Data, Rev. 7.0

Freescale Semiconductor

Preliminary

4.4 Data Map

Note: Data Flash is NOT available on the 56F8167 device.

4.5 Flash Memory Map

Figure 4-1 illustrates the Flash Memory (FM) map on the system bus.

The Flash Memory is divided into three functional blocks. The Program and boot memories reside on the

Program Memory buses. They are controlled by one set of banked registers. Data Memory Flash resides

on the Data Memory buses and is controlled separately by its own set of banked registers.

The top nine words of the Program Memory Flash are treated as special memory locations. The content of

these words is used to control the operation of the Flash Controller. Because these words are part of the

Flash Memory content, their state is maintained during power down and reset. During chip initialization,

the content of these memory locations is loaded into Flash Memory control registers, detailed in the Flash

Memory chapter of the 56F8300 Peripheral User Manual. These configuration parameters are located

between $03_FFF7 and $03_FFFF.

Table 4-6 Data Memory Map1

1. All addresses are 16-bit Word addresses, not byte addresses.

Begin/End

Address

EX = 02

2. In the Operating Mode Register (OMR).

EX = 1

X:$FF FFFF

X:$FF FF00

EOnCE

256 locations allocated

EOnCE

256 locations allocated

X:$FF FEFF

X:$01 0000

External Memory

X:$00 FFFF

X:$00 F000

On-Chip Peripherals

4096 locations allocated

On-Chip Peripherals

4096 locations allocated

X:$00 EFFF

X:$00 8000

External Memory

X:$00 7FFF

X:$00 4000

On-Chip Data Flash

32KB

X:$00 3FFF

X:$00 0000

On-Chip Data RAM

32KB3

3. The Data RAM is organized as an 8K x 32-bit memory to allow single-cycle, long-word operations.

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