Datasheet

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

ADDRESS

CONTENT BIT(S) COMMENT

0000H to 1FFFH DATA 7:0 User ROM Data

2000H to 203FH KEY 7:0 ROM Encryption Key

2040H SEC 0 ROM Security Bit 1

2040H SEC 1 ROM Security Bit 2

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.