USER'S GUIDE

Read Access:

May be read normally anytime.

Write Access:

Cannot be modified by the application software; can only be written via the

 

Bootstrap Loader.

MCON.2:

ECE2

ªEnable Chip Enable 2º:

Used to enable or disable the

 

 

CE2signal for the Byte±wide bus data

 

memory. This bit should always be cleared to 0 in the DS5000, DS5000-32,

 

DS2250±8 and DS2250±32 versions.

Initialization:

Cleared to 0 only during a No VLI Power On Reset.

Read Access:

Read normally anytime.

Write Access:

Can be written normally at any time.

MCON.1:PAA

ªPartition Address Accessº: Used to protect the programming of the Partition Address select bits. PA3±0 cannot be written when PAA=0. PAA can be written only via the Timed Ac- cess register.

Initialization:

PAA is cleared on any reset.

Read Access:

PAA may be read anytime.

Write Access:

The Timed Access register must be used to perform any type of write opera-

 

tion on the PAA bit.

MCON.0:

SL

ªSecurity Lockº:

Indicates that the security lock is set when SL=1.

Initialization:

Cleared to a 0 on a no VLI power on reset.

Read Access:

Read normally any time.

Write Access:

Can only be modified by the Lock and Unlock commands of the Bootstrap

 

loader. This bit cannot be modified by the application software or by the

 

Bootstrap loader Write command.

DS5001 MCON REGISTER

Label: MCON

Register Address: 0C6H

PA3

PA2

PA1

PA0

RG1

PES

PM

SL

Bit Description:

MCON.7±4:

PA3±0

 

Partition Address. When PM=0, this address specifies the boundary

 

between program and data memory in a continuous space.

Initialization:

Unaffected by watchdog, external, or power±up resets. Set to 1111B on a

 

No VLI reset.

Read Access:

Can be read normally at any time.

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Mitsubishi DS907x SIP, DS5000TK manual DS5001 Mcon Register, Label Mcon Register Address 0C6H, MCON.0