MAC7200 datasheet(436/976 Pages) FREESCALE

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Flash Features

MAC7200 Microcontroller Family Reference Manual, Rev. 2

358

Freescale Semiconductor

when the ARM7 core is in Supervisor mode and/or when a load/store operation is being performed. Note

that all eDMA transfers are done in Supervisor/Data mode.

For information on the location of the Flash main array and Shadow Block in the memory map, refer to

Chapter 9, “Device Memory Map”.

Consult Chapter 19, “Hip7a Low-Cost Embedded Flash (H7Fb)” and Chapter 20, “SPP Flash Controller

(PFLASH_H7Fb) Module” for information on the operation and control of the on-chip Flash implemented

on the MAC7200 family of devices.

18.2

Flash Features

18.2.1

General Features

•

READ and WRITE paths through AHB

•

Configurable line buffers for performance tuning based on application

18.2.2

Main Array Features

•

512K / 320K Flash

•

Typically stores Application Code and Data

•

Memory Map: See Section 9.12, “Flash Main Array Memory Map”

•

Shares a single AHB interface with the Shadow Block

18.2.3

Shadow Block Features

•

32K Flash

•

Stores the Primary Boot Loader (PBL) and/or Parameter Data

•

Memory Map: See Section 9.13, “Shadow Block Memory Map”

•

Shares a single AHB interface with the main array

18.2.4

Flash Modes

•

Flash User Mode

— Read Operations

— Write (Program) Operations

— Erase Operation

— Entering/Exiting Stop Mode

18.3

Flash Implementation

18.3.1

MAC72x1 Flash

The Flash configuration for the MAC72x1 is as follows:

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