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Philips Semiconductors
FLASH MEMORY
Boot Vector
BOOTVEC
Address: xxxxh
Factory default value: 1Fh
BIT
SYMBOL
BOOTVEC.7-5
-
BOOTVEC.4-0
-
Boot Status
BOOTSTAT
Address: xxxxh
Factory default value: 01h
BIT
SYMBOL
BOOTSTAT.7-1
-
BOOTSTAT.0
BSB
2003 Dec 8
7
6
-
-
FUNCTION
Reserved (should remain unprogrammed at zero).
Boot Vector. If the Boot Vector is selected as the reset address, the P89LPC920/921/922
will start execution at an address comprised of 00H in the lower eight bits and this
BOOTVEC as the upper bits after a reset. (See section "Reset vector" on page 40).
Figure 15-7: Boot Vector (BOOTVEC)
7
6
-
-
FUNCTION
Reserved (should remain unprogrammed at zero).
Boot Status Bit. If programmed to '1', the P89LPC920/921/922 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 section "Reset vector" on page 40).
Figure 15-8: Boot Status (BOOTSTAT)
5
4
3
-
BOOTV4 BOOTV3 BOOTV2 BOOTV1 BOOTV0
5
4
3
-
-
-
111
User's Manual - Preliminary -
P89LPC920/921/922
2
1
0
2
1
0
-
-
BSB
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