S29AL016J70TFNR23 View Datasheet(PDF) - Spansion Inc.
Part Name
Description
Manufacturer
S29AL016J70TFNR23
Spansion Inc.
S29AL016J70TFNR23 Datasheet PDF : 60 Pages
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Data Sheet
7.9
Autoselect Mode
The autoselect mode provides manufacturer and device identification, and sector group protection
verification, through identifier codes output on DQ7–DQ0. This mode is primarily intended for programming
equipment to automatically match a device to be programmed with its corresponding programming algorithm.
However, the autoselect codes can also be accessed in-system through the command register.
When using programming equipment, the autoselect mode requires VID (8.5 V to 12.5 V) on address pin A9.
Address pins A6 and A3–A0 must be as shown in Table 7.6. In addition, when verifying sector group
protection, the sector address must appear on the appropriate highest order address bits (see Table 7.2
on page 19 and Table 7.4 on page 20). Table 7.6 shows the remaining address bits that are don’t care. When
all necessary bits have been set as required, the programming equipment may then read the corresponding
identifier code on DQ7-DQ0.
To access the autoselect codes in-system, the host system can issue the autoselect command via the
command register, as shown in Table 10.1 on page 35. This method does not require VID. See Command
Definitions on page 30 for details on using the autoselect mode.
Table 7.6 S29AL016J Autoselect Codes (High Voltage Method)
Description
Manufacturer ID: Spansion
Device ID: S29AL016J
(Top Boot Block)
Device ID: S29AL016J
(Bottom Boot Block)
Mode CE#
L
Word
L
Byte
L
Word
L
Byte
L
Sector Group Protection Verification
L
Secured Silicon Sector Indicator Bit (DQ7) Top
Boot Block
L
OE#
L
L
L
L
L
L
L
WE#
H
H
H
H
H
H
H
A19
A8
A5 A3
to
to
to to
A10 A9 A7 A6 A4 A2 A1 A0
X VID X L X L L L
X VID X L X L L H
X VID X L X L L H
SA VID X L X L H L
X VID X L X L H H
DQ8
to
DQ15
X
22h
X
22h
X
X
X
X
Secured Silicon Sector Indicator Bit (DQ7)
Bottom Boot Block
L
L
H
X VID X L X L H H
X
Legend
L = Logic Low = VIL; H = Logic High = VIH; SA = Sector Address; X = Don’t care
Note
The autoselect codes may also be accessed in-system via command sequences. See Table 10.1 on page 35.
DQ7
to
DQ0
01h
C4h
C4h
49h
49h
01h (protected)
00h (unprotected)
8Eh (factory locked)
0Eh (not factory locked)
96h (factory locked)
16h (not factory locked)
7.10
Sector Group Protection/Unprotection
The hardware sector group protection feature disables both program and erase operations in any sector
group (see Table 7.2 on page 19 to Table 7.4 on page 20). The hardware sector group unprotection feature
re-enables both program and erase operations in previously protected sector groups. Sector group
protection/unprotection can be implemented via two methods.
Sector protection/unprotection requires VID on the RESET# pin only, and can be implemented either in-
system or via programming equipment. Figure 7.2 on page 24 shows the algorithms and Figure 17.12
on page 51 shows the timing diagram. This method uses standard microprocessor bus cycle timing. For
sector group unprotect, all unprotected sector groups must first be protected prior to the first sector group
unprotect write cycle.
The device is shipped with all sector groups unprotected. Spansion offers the option of programming and
protecting sector groups at its factory prior to shipping the device through Spansion Programming Service.
Contact a Spansion representative for details.
It is possible to determine whether a sector group is protected or unprotected. See Autoselect Mode
on page 21 for details.
February 18, 2010 S29AL016J_00_10
S29AL016J
21
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