P80C51X2FA datasheet(55/62 Pages) PHILIPS

Part #	P80C51X2FA

Description	80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V, low power, high speed 30/33 MHz

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Philips Semiconductors

Product data

P80C3xX2; P80C5xX2;

P87C5xX2

80C51 8-bit microcontroller family

4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),

low power, high speed (30/33 MHz)

2003 Jan 24

55

80C54X2 ROM CODE SUBMISSION

When submitting a ROM code for the 80C54X2, the following must be specified:

1. 16 kbyte user ROM data

2. 64 byte ROM encryption key

3. 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

0

ROM Security Bit 1

0 = enable security

1 = disable security

4040H

SEC

1

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.

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

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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P80C51X2FA Datasheet(PDF) 55 Page - NXP Semiconductors

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