DS5000(T)

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A typical parallel loading session would follow this procedure. First, set the contents of the MCON

register with the correct range and partition only if using expanded programming cycles. Next, the

encryption registers can be loaded to enable encryption of the program/data memory (not required). Then,

program the DS5000(T) using either normal or expanded program cycles and check the memory contents

using Verify cycles. The last operation would be to turn on the security lock feature by either a Security

Set cycle or by explicitly writing to the MCON register and setting MCON.0 to a 1.

SERIAL LOADER BAUD RATES FOR

DIFFERENT CRYSTAL FREQUENCIES Table 2

BAUD RATE

CRYSTAL FREQ

(MHz)

300

1200

2400

9600

19200

57600

14.7456

Y

Y

Y

Y

11.0592

Y

Y

Y

Y

Y

Y

9.21600

Y

Y

Y

Y

7.37280

Y

Y

Y

Y

5.52960

Y

Y

Y

Y

1.84320

Y

Y

Y

Y

ADDITIONAL INFORMATION

Refer to the Secure Microcontroller User’s Guide for a complete description for all operational aspects of

the DS5000(T).

DEVELOPMENT SUPPORT

The DS89C450-K00 evaluation kit (www.maxim-ic.com/DS89C450evkit) can be used to develop and

test user code. It allows the user to download Intel hex-formatted code to the DS5000(T) from a PC.

Refer to the Secure Microcontroller User’s Guide for more information.