FlashFlex51 MCU
SST89E564RD / SST89V564RD / SST89E554RC / SST89V554RC
Data Sheet
TABLE
Level
9-2: S
ECURITY
L
OCK
A
CCESS
T
ABLE
SFST[7:5]
111b
(hard lock on both blocks)
External
Block 0/1
011b/101b
(hard lock on both blocks)
External
Source
Address
1
Block 0/1
Target
Address
2
Block 0/1
External
Block 0/1
External
Block 0/1
External
Block 0/1
External
Block 0
Block 0
001b/110b
(Block 0 = SoftLock,
Block 1 = hard lock)
Block 1
External
Block 0
Block 1
Block 1
External
External
Block 0/1
External
Block 0
Block 0
010b
(SoftLock on both blocks)
Block 1
External
Block 0
Block 1
Block 1
External
External
Block 0/1
External
Block 0
Block 0
100b
(SoftLock on both blocks)
Block 1
External
Block 0
Block 1
Block 1
External
External
Block 0/1
External
Block 0
Block 0
000b
(unlock)
Block 1
External
Block 0
Block 1
Block 1
External
External
Block 0/1
External
Byte-Verify Allowed
External Host
3
N
N/A
N
N/A
N
N/A
N
N/A
N
N
N/A
N
N
N/A
N
N/A
N
N
N/A
N
N
N/A
N
N/A
Y
Y
N/A
Y
Y
N/A
Y
N/A
Y
Y
N/A
Y
Y
N/A
Y
N/A
IAP
N
N/A
N
N/A
N
N/A
N
N/A
N
N
N/A
Y
N
N/A
N
N/A
N
Y
N/A
Y
N
N/A
N
N/A
N
Y
N/A
Y
N
N/A
N
N/A
N
Y
N/A
Y
N
N/A
Y
N/A
MOVC Allowed
564RD
Y
N
N
N
Y
N
N
Y
Y
N
N
Y
Y
N
N
Y
Y
Y
N
Y
Y
N
N
Y
Y
Y
N
Y
Y
N
N
Y
Y
Y
N
Y
Y
N
N
Y
554RC
Y
Y
N
Y
Y
Y
N
Y
Y
N
Y
Y
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
T9-2.1 1207
4
3
2
1
1. Location of MOVC or IAP instruction
2. Target address is the location of the byte being read
3. External host Byte-Verify access does not depend on a source address.
©2003 Silicon Storage Technology, Inc.
S71207-04-000
12/03
59
SST [ SILICON STORAGE TECHNOLOGY, INC ]
