S25FL128S Datasheet, PDF (64/153 Pages) SPANSION – MirrorBit® Flash Non-Volatile Memory CMOS 3.0 Volt Core with Versatile I/O Serial Peripheral Interface with Multi-I/O

Data Sheet
8.5.6
8.5.7
8.5.8
ASP Register (ASPR)
Related Commands: ASP Read (ASPRD 2Bh) and ASP Program (ASPP 2Fh).
The ASP register is a 16-bit OTP memory location used to permanently configure the behavior of Advanced
Sector Protection (ASP) features.
Table 8.17 ASP Register (ASPR)
Bits
Field Name
Function
Type
Default
State
Description
15 to 9
RFU
Reserved
OTP
1
Reserved for Future Use
8
RFU
Reserved
OTP (Note 1) Reserved for Future Use
7
RFU
Reserved
OTP (Note 1) Reserved for Future Use
6
RFU
Reserved
OTP
1
Reserved for Future Use
5
RFU
Reserved
OTP (Note 1) Reserved for Future Use
4
RFU
Reserved
OTP (Note 1) Reserved for Future Use
3
RFU
Reserved
OTP (Note 1) Reserved for Future Use
2
PWDMLB
Password
Protection Mode
Lock Bit
OTP
1
0 = Password Protection Mode permanently enabled.
1 = Password Protection Mode not permanently enabled.
1
PSTMLB
Persistent
Protection Mode
Lock Bit
OTP
1
0 = Persistent Protection Mode permanently enabled.
1 = Persistent Protection Mode not permanently enabled.
0
RFU
Reserved
OTP
1
Reserved for Future Use
Note:
1. Default value depends on ordering part number, see Initial Delivery State on page 148.
Reserved for Future Use (RFU) ASPR[15:3, 0].
Password Protection Mode Lock Bit (PWDMLB) ASPR[2]: When programmed to 0, the Password
Protection Mode is permanently selected.
Persistent Protection Mode Lock Bit (PSTMLB) ASPR[1]: When programmed to 0, the Persistent
Protection Mode is permanently selected. PWDMLB and PSTMLB are mutually exclusive, only one may be
programmed to zero.
Password Register (PASS)
Related Commands: Password Read (PASSRD E7h) and Password Program (PASSP E8h).
Table 8.18 Password Register (PASS)
Bits
Field
Name
63 to 0 PWD
Function
Hidden
Password
Type
OTP
Default State
FFFFFFFF-
FFFFFFFFh
Description
Non-volatile OTP storage of 64 bit password. The password is
no longer readable after the password protection mode is
selected by programming ASP register bit 2 to zero.
PPB Lock Register (PPBL)
Related Commands: PPB Lock Read (PLBRD A7h, PLBWR A6h)
Table 8.19 PPB Lock Register (PPBL)
Bits
7 to 1
0
Field Name
RFU
Function
Reserved
PPBLOCK Protect PPB Array
Type
Volatile
Volatile
Default State
Description
00h
Reserved for Future Use
Persistent Protection Mode = 1
Password Protection Mode = 0
0 = PPB array protected until next power cycle
or hardware reset
1 = PPB array may be programmed or erased.
64
S25FL128S and S25FL256S
S25FL128S_256S_00_05 July 12, 2012