76 S29CD-J and S29CL-J Flash Family S29CD-J_CL-J_00_B7 October 11, 2012
Data Sheet
Legend
Notes
Table 20.2 Sector Protection Command Definitions (x32 Mode)
Command (Notes)
Cycles
Bus Cycles (Notes 1–4)
First Second Third Fourth Fifth Sixth
Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data
Reset 1 XXX F0
Secured Silicon Sector Entry 3 555 AA 2AA 55 555 88
Secured Silicon Sector Exit 4 555 AA 2AA 55 555 90 XX 00
Secured Silicon Protection
Bit Program (5, 6)6 555 AA 2AA 55 555 60 OW 68 OW 48 OW RD(0)
Secured Silicon Protection Bit
Status 6 555 AA 2AA 55 555 60 OW RD(0)
Password Program (5, 7, 8) 4 555 AA 2AA 55 555 38 PWA[0-1] PWD[0-1]
Password Verify 4 555 AA 2AA 55 555 C8 PWA[0-1] PWD[0-1]
Password Unlock (7, 8) 5 555 AA 2AA 55 555 28 PWA[0-1] PWD[0-1]
PPB Program (5, 6) 6 555 AA 2AA 55 555 60 SG+WP 68 SG+WP 48 SG+WP RD(0)
All PPB Erase (5, 9, 10) 6 555 AA 2AA 55 555 60 WP 60 WP 40 WP RD(0)
PPB Status (11, 12) 4 555 AA 2AA 55 BA+555 90 SA+X02 00/01
PPB Lock Bit Set 3 555 AA 2AA 55 555 78
PPB Lock Bit Status 4 555 AA 2AA 55 BA+555 58 SA RD(1)
DYB Write (7) 4 555 AA 2AA 55 555 48 SA X1
DYB Erase (7) 4 555 AA 2AA 55 555 48 SA X0
DYB Status (12) 4 555 AA 2AA 55 BA+555 58 SA RD(0)
PPMLB Program (5, 6) 6 555 AA 2AA 55 555 60 PL 68 PL 48 PL RD(0)
PPMLB Status (5) 6 555 AA 2AA 55 555 60 PL RD(0)
SPMLB Program (5, 6) 6 555 AA 2AA 55 555 60 SL 68 SL 48 SL RD(0)
SPMLB Status (5) 6 555 AA 2AA 55 555 60 SL RD(0)
DYB = Dynamic Protection Bit
OW = Address (A5–A0) is (011X10).
PPB = Persistent Protection Bit
PWA = Password Address. A0 selects between the low and high 32-bit portions
of the 64-bit Password
PWD = Password Data. Must be written over two cycles.
PL = Password Protection Mode Lock Address (A5–A0) is (001X10)
RD(0) = Read Data DQ0 protection indicator bit. If protected, DQ0= 1, if
unprotected, DQ0 = 0.
RD(1) = Read Data DQ1 protection indicator bit. If protected, DQ1 = 1, if
unprotected, DQ1 = 0.
SA = Sector Address. The set of addresses that comprise a sector. The system
may write any address within a sector to identify that sector for a command.
SG = Sector Group Address
BA = Bank Address. The set of addresses that comprise a bank. The system may
write any address within a bank to identify that bank for a command.
SL = Persistent Protection Mode Lock Address (A5–A0) is (010X10)
WP = PPB Address (A5–A0) is (111010)
X = Don’t care
PPMLB = Password Protection Mode Locking Bit
SPMLB = Persistent Protection Mode Locking Bit
1. See Table 8.1 for description of bus operations.
2. All values are in hexadecimal.
3. Shaded cells in table denote read cycles. All other cycles are write
operations.
4. During unlock cycles, (lower address bits are 555 or 2AAh as shown in table)
address bits higher than A11 (except where BA is required) and data bits
higher than DQ7 are don’t cares.
5. The reset command returns the device to reading the array.
6. The fourth cycle programs the addressed locking bit. The fifth and sixth
cycles are used to validate whether the bit has been fully programmed. If DQ0
(in the sixth cycle) reads 0, the program command must be issued and
verified again.
7. Data is latched on the rising edge of WE#.
8. The entire four bus-cycle sequence must be entered for each portion of the
password.
9. The fourth cycle erases all PPBs. The fifth and sixth cycles are used to
validate whether the bits have been fully erased. If DQ0 (in the sixth cycle)
reads 1, the erase command must be issued and verified again.
10. Before issuing the erase command, all PPBs should be programmed in order
to prevent over-erasure of PPBs.
11. In the fourth cycle, 00h indicates PPB set; 01h indicates PPB not set.
12. The status of additional PPBs and DYBs may be read (following the fourth
cycle) without reissuing the entire command sequence.