Philips 8-bit microcontroller with two-clock 80C51 core UM10109 Manual Do Utilizador
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
User manual
Rev. 02 — 23 May 2005
125 of 133
Philips Semiconductors
UM10109
P89LPC932A1 User manual
18.19 Boot Vector register
18.20 Boot status register
Table 105: Effects of Security Bits
EDISx
SPEDISx
MOVCDISx
Effects on Programming
0
0
0
None.
0
0
1
Security violation flag set for sector CRC calculation for the specific sector.
Security violation flag set for global CRC calculation if any MOVCDISx bit is set.
Cycle aborted. Memory contents unchanged. CRC invalid. Program/erase
commands will not result in a security violation.
Security violation flag set for global CRC calculation if any MOVCDISx bit is set.
Cycle aborted. Memory contents unchanged. CRC invalid. Program/erase
commands will not result in a security violation.
0
1
x
Security violation flag set for program commands or an erase page command.
Cycle aborted. Memory contents unchanged. Sector erase and global erase are
allowed.
Cycle aborted. Memory contents unchanged. Sector erase and global erase are
allowed.
1
x
x
Security violation flag set for program commands or an erase page command.
Cycle aborted. Memory contents unchanged. Global erase is allowed.
Cycle aborted. Memory contents unchanged. Global erase is allowed.
Table 106: Boot Vector (BOOTVEC) bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol
-
-
-
BOOTV4
BOOTV3
BOOTV2
BOOTV1
BOOTV0
Factory default
value
value
0
0
0
1
1
1
1
1
Table 107: Boot Vector (BOOTVEC) bit description
Bit Symbol
Description
0:4 BOOTV[0:4]
Boot vector. If the Boot Vector is selected as the reset address, the P89LPC932A1 will start execution at
an address comprised of 00h in the lower eight bits and this BOOTVEC as the upper eight bits after a
reset.
an address comprised of 00h in the lower eight bits and this BOOTVEC as the upper eight bits after a
reset.
5:7 -
reserved
Table 108: Boot Status (BOOTSTAT) bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol
DCCP
CWP
AWP
-
-
-
--
BSB
Factory default
value
value
0
0
0
0
0
0
0
1
Table 109: Boot Status (BOOTSTAT) bit description
Bit Symbol
Description
0
BSB
Boot Status Bit. If programmed to logic 1, the P89LPC932A1 will always start execution at an address
comprised of 00H in the lower eight bits and BOOTVEC as the upper bits after a reset. (See
comprised of 00H in the lower eight bits and BOOTVEC as the upper bits after a reset. (See
1:4 -
reserved