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参数资料
| 型号： | S29AL008D70MAI010 |
| 厂商： | SPANSION LLC |
| 元件分类： | PROM |
| 英文描述： | 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
| 中文描述： | 512K X 16 FLASH 3V PROM, 70 ns, PDSO44 |
| 封装： | MO-180AAA, SOP-44 |
| 文件页数： | 10/52页 |
| 文件大小： | 2004K |
| 代理商： | S29AL008D70MAI010 |
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18
S29AL008D
S29AL008D_00_A11 February 27, 2009
Da ta
Sh e e t
7.9
Autoselect Mode
The autoselect mode provides manufacturer and device identification, and sector 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 (11.5 V to 12.5 V) on address pin A9.
Address pins A6, A1, and A0 must be as shown in Table 7.4. In addition, when verifying sector protection, the
sector address must appear on the appropriate highest order address bits (see Table 7.2 on page 16 and
Table 7.3 on page 17). Table 7.4 shows the remaining address bits that are don’t care. When all necessary
bits are 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
Definitions on page 21 for details on using the autoselect mode.
Legend
L = Logic Low = VIL
H = Logic High = VIH
SA = Sector Address
X = Don’t care.
7.10
Sector Protection/Unprotection
The hardware sector protection feature disables both program and erase operations in any sector. The
hardware sector unprotection feature re-enables both program and erase operations in previously protected
sectors.
The device is shipped with all sectors unprotected. Spansion offers the option of programming and protecting
sectors at its factory prior to shipping the device through Spansion’s ExpressFlash Service. Contact an
Spansion representative for details.
It is possible to determine whether a sector is protected or unprotected. See Autoselect Mode on page 18 for
details.
Sector Protection/unprotection can be implemented via two methods.
The primary method requires VID on the RESET# pin only, and can be implemented either in-system or via
programming equipment. Figure 7.2 on page 20 shows the algorithms and Figure 15.12 on page 43 shows
the timing diagram. This method uses standard microprocessor bus cycle timing. For sector unprotect, all
unprotected sectors must first be protected prior to the first sector unprotect write cycle.
The alternate method intended only for programming equipment requires VID on address pin A9 and OE#.
This method is compatible with programmer routines written for earlier 3.0 volt-only Spansion flash devices.
Publication number 20536 contains further details; contact an Spansion representative to request a copy.
Table 7.4 S29AL008D Autoselect Codes (High Voltage Method)
Description
Mode
CE#
OE#
WE#
A18
to
A12
A11
to
A10
A9
A8
to
A7
A6
A5
to
A4
A3
to
A2
A1
A0
DQ8
to
DQ15
DQ7
to
DQ0
Manufacturer ID: Spansion
L
H
X
VID
XL
L
X
01h
Device ID:
S29AL008D
(Top Boot Block)
Word
L
H
XX
VID
XL
L
H
22h
DAh
Byte
L
H
XDAh
Device ID:
S29AL008D
(Bottom Boot Block)
Word
L
H
XX
VID
XL
L
H
22h
5Bh
Byte
L
H
X5Bh
Sector Protection Verification
L
H
SA
X
VID
XL
H
L
X
01h (protected)
X
00h
(unprotected)
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相关代理商/技术参数 |
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|---|---|
| S29AL008D70MAI011 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
| S29AL008D70MAI012 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
| S29AL008D70MAI013 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
| S29AL008D70MAI020 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
| S29AL008D70MAI021 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
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