80C554 datasheet(74/76 Pages) PHILIPS

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Philips Semiconductors

Preliminary specification

80C554/83C554/87C554

80C51 8-bit microcontroller – 6 clock operation

16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM,

capture/compare, high I/O, 64L LQFP

2000 Nov 10

ROM CODE SUBMISSION FOR 16K ROM DEVICES

When submitting ROM code for the 16k ROM devices, the following must be specified:

1. 16k byte user ROM data

2. ROM security bits.

ADDRESS

CONTENT

BIT(S)

COMMENT

0000H to 3FFFH

DATA

7:0

User ROM Data

4000H to 403FH

KEY

7:0

ROM Encryption Key

FFH = no encryption

4040H

SEC

ROM Security Bit 1

0 = enable security

1 = disable security

4040H

SEC

ROM Security Bit 2

0 = enable security

1 = disable security

4040H

SEC

ROM Security Bit 3

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.

NOTE: Security Bit 2 cannot be enabled unless Security Bit 1 is enabled.

Security Bit 3:

When programmed, inhibits external execution.

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

Security Bit #3:

V Enabled

V Disabled

Purchase of Philips I2C components conveys a license under the Philips’ I2C patent

to use the components in the I2C system provided the system conforms to the

I2C specifications defined by Philips. This specification can be ordered using the

code 9398 393 40011.

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