P87LPC760 NXP Semiconductors, P87LPC760 Datasheet - Page 47

• Manufacturer Part Number: P87LPC760
• Description: The P87LPC760 is a 14-pin single-chip microcontroller designed forlow pin count applications demanding high-integration, low costsolutions over a wide range of performance requirements
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Security Bits
When neither of the security bits are programmed, the code in the
EPROM can be verified. When only security bit 1 is programmed, all
Table 11. EPROM Security Bits
2002 Mar 07
Low power, low price, low pin count (14 pin)
microcontroller with 1 kbyte OTP
UCFG2
SB2
1
1
0
0
BIT
UCFG2.7, 6
UCFG2.5–0
Address: FD01h
SB1
1
0
1
0
Both security bits unprogrammed. No program security features enabled. EPROM is programmable and verifiable.
Only security bit 1 programmed. Further EPROM programming is disabled. Security bit 2 may still be programmed.
Only security bit 2 programmed. This combination is not supported.
Both security bits programmed. All EPROM verification and programming are disabled.
SYMBOL
SB2, SB1
SB2
—
7
FUNCTION
EPROM security bits. See table entitled, “EPROM Security Bits” for details.
Reserved for future use.
Figure 40. EPROM System Configuration Byte 2 (UCFG2)
SB1
6
—
5
—
4
44
Protection Description
—
3
further programming of the EPROM is disabled. At that point, only
security bit 2 may still be programmed. When both security bits are
programmed, EPROM verify is also disabled.
—
2
—
1
—
0
Unprogrammed Value: FFh
P87LPC760
Preliminary data
SU01186