P83C51RA View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

P83C51RA

80C51 8-bit microcontroller family 8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V), low power, high speed (33 MHz)

Philips Electronics 

Philips Semiconductors

80C51 8-bit microcontroller family

8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V),

low power, high speed (33MHz)

Product specification

8XC52/54/58/80C32

8XC51FA/FB/FC/80C51FA

8XC51RA+/RB+/RC+/RD+/80C51RA+

ROM CODE SUBMISSION FOR 16K ROM DEVICES (80C54, 83C51FB AND 83C51RB+)

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

1. 16k byte user ROM data

2. 64 byte ROM encryption key

3. ROM security bits.

ADDRESS

0000H to 3FFFH

4000H to 403FH

4040H

4040H

CONTENT

DATA

KEY

SEC

SEC

BIT(S)

7:0

7:0

0

1

COMMENT

User ROM Data

ROM Encryption Key

FFH = no encryption

ROM Security Bit 1

0 = enable security

1 = disable security

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.

1999 Apr 01

49

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