MAC7200 datasheet(453/976 Pages) FREESCALE

Part #	MAC7200

Description	MAC7200 Microcontroller Family Reference Manual

PDF	976 Pages

Scroll/Zoom	100%

Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

Logo

453 / 976 page

PFLASH Application Usage

MAC7200 Microcontroller Family Reference Manual, Rev. 2

Freescale Semiconductor

375

2. Reset the device. The new security state does not take effect until after the device has been reset.

18.7.9.2

Unsecuring the device

In order to secure the device, you must perform the following steps:

1. Program bits [1:0] of the System Censor word (in the Shadow Block at address offset $7de0) to 10.

2. Reset the device. The new security state does not take effect until after the device has been reset.

3. If it is not possible to program the System Censor word due to the security of the system, then you

must use the Lockout Recovery procedure to unsecure the device.

CAUTION

This procedure will erase the entire contents of both the Flash Main Array

and Shadow Block. Please refer to Section 20.3, “BAM Protocol” for details

on performing the Lockout Recovery procedure.

18.7.10 Flash Timing

Please refer to Appendix A, “Electrical Characteristics” for information on program and erase times.

MAC7200 Datasheet(PDF) 453 Page - Freescale Semiconductor, Inc