80C32EBAA datasheet(58/62 Pages) PHILIPS

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Philips Semiconductors

Product specification

80C52/80C54/80C58

CMOS single-chip 8-bit microcontrollers

1996 Aug 16

80C58 ROM CODE SUBMISSION

When submitting ROM code for the 80C58, the following must be specified:

1. 32k byte user ROM data

2. 64 byte ROM encryption key

3. ROM security bits.

If submitting a file, the format is as follows:

ADDRESS

CONTENT

BIT(S)

COMMENT

0000H to 7FFFH

DATA

7:0

User ROM Data

8000H to 801FH

KEY

7:0

ROM Encryption Key

FFH = no encryption

8020H

SEC

ROM Security Bit 1

0 = enable security

1 = disable security

8020H

SEC

ROM Security Bit 2

0 = enable security

1 = disable security

Security Bit 1: When programmed, this bit has two effects on masked ROM parts:

1. External MOVC is disabled, and

2. EA is latched on Reset.

Security Bit 2: When programmed, this bit inhibits Verify User ROM.

If the ROM code file does not include the options, the following information must be included with the ROM code.

For each of the following check the appropriate box and send to Philips along with the code:

Security Bit #1:

V Enabled

V Disabled

Security Bit #2:

V Enabled

V Disabled

Encryption:

V No

V Yes

If Yes, must send key file.

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