SST49LF160C Datasheet, PDF (22/35 Pages) Silicon Storage Technology, Inc – 16 Mbit LPC Flash

Advance Information
Security ID Registers
The SST49LF160C device offers a 256-bit Security ID reg-
ister space. The Security ID space is divided into two seg-
ments - one (64-bits) factory programmed segment and
one (192 bits) user programmed segment. The first seg-
ment is programmed and locked at SST with a unique 64-
bit number. The user segment (192 bits) is left blank (FFH)
for the customer to be programmed as desired. Refer to
Table 8, “Software Command Sequence” for more details.
16 Mbit LPC Flash
SST49LF160C
The Security ID Information and its Write Lock/Unlock sta-
tus can be Read in the Register Access Space for Execute-
In-Place type of applications. (See Table 15.)
The Write Lock-out status of the Security ID space can be
read from the SEC_ID_WRITE_LOCK register (see Table
15). The SEC_ID_WRITE_LOCK register is a read-only
register that is accessible at the address location specified
in Table 15.
TABLE 15: Security ID Registers
Register
Register
Address¹
Value
Access Description
SEC_ID__WRITE_LOCK
FFBC0102H 0000 0000b
0000 0001b
R
Write Unlocked
Write Locked
SEC_ID_BYTE_0
FFBC0180H
R
Factory Programmed
SEC_ID_BYTE_1
FFBC0181H
R
Factory Programmed
SEC_ID_BYTE_2
FFBC0182H
R
Factory Programmed
SEC_ID_BYTE_3
FFBC0183H
R
Factory Programmed
…
…
…
…
SEC_ID_BYTE_7
FFBC0187H
R
Factory Programmed
SEC_ID_BYTE_8
FFBC0188H
R
User Programmed
SEC_ID_BYTE_9
FFBC0189H
R
User Programmed
…
…
…
…
SEC_ID_BYTE_30
FFBC019EH
R
User Programmed
SEC_ID_BYTE_31
FFBC019FH
R
User Programmed
T15.0 1315
1. Address shown in this column is for boot device only. Address locations should appear elsewhere in the 4 GByte system memory
map depending on ID strapping values on ID[3:0] pins when multiple LPC memory devices are used in a system.
©2006 Silicon Storage Technology, Inc.
22
S71315-00-000
4/06