參數(shù)資料
型號(hào): AM29F040B-90JI
廠商: ADVANCED MICRO DEVICES INC
元件分類: PROM
英文描述: 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
中文描述: 512K X 8 FLASH 5V PROM, 90 ns, PQCC32
封裝: PLASTIC, MO-052AE, LCC-32
文件頁(yè)數(shù): 7/30頁(yè)
文件大小: 403K
代理商: AM29F040B-90JI
Am29F040B
7
P R E L I M I N A R Y
The device enters the CMOS standby mode when the
CE# pin is held at V
CC
±
0.5 V. (Note that this is a more
restricted voltage range than V
IH
.) The device enters
the TTL standby mode when CE# is held at V
IH
. The
device requires the standard access time (t
CE
) before it
is ready to read data.
If the device is deselected during erasure or program-
ming, the device draws active current until the
operation is completed.
I
CC3
in the DC Characteristics tables represents the
standby current specification.
Output Disable Mode
When the OE# input is at V
IH
, output from the device is
disabled. The output pins are placed in the high imped-
ance state.
Table 2.
Sector Addresses Table
Note:
All sectors are 64 Kbytes in size.
Autoselect Mode
The autoselect mode provides manufacturer and de-
vice 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 V
ID
(11.5 V to 12.5 V) on address pin
A9. Address pins A6, A1, and A0 must be as shown in
Autoselect Codes (High Voltage Method) table. In addi-
tion, when verifying sector protection, the sector ad-
dress must appear on the appropriate highest order
address bits. Refer to the corresponding Sector Ad-
dress Tables. The Command Definitions table shows
the remaining address bits that are don’t care. When all
necessary bits have been set as required, the program-
ming 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 the Command Defini-
tions table. This method does not require V
ID
. See
“Command Definitions” for details on using the autose-
lect mode.
Sector
A18
A17
A16
Address Range
SA0
0
0
0
00000h–0FFFFh
SA1
0
0
1
10000h–1FFFFh
SA2
0
1
0
20000h–2FFFFh
SA3
0
1
1
30000h–3FFFFh
SA4
1
0
0
40000h–4FFFFh
SA5
1
0
1
50000h–5FFFFh
SA6
1
1
0
60000h–6FFFFh
SA7
1
1
1
70000h–7FFFFh
相關(guān)PDF資料
PDF描述
AM29F040B-90JIB 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
AM29F040B-90PC 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
AM29F040B-90PCB 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
AM29F040B-90PE 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
AM29F040B-90PEB 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM29F040B-90JI\\T 制造商:Spansion 功能描述:
AM29F040B-90JI\T 制造商:Spansion 功能描述:NOR Flash Parallel 5V 4Mbit 512K x 8bit 90ns 32-Pin PLCC T/R
AM29F040B-90JIT 制造商:Spansion 功能描述:NOR Flash Parallel 5V 4Mbit 512K x 8bit 90ns 32-Pin PLCC T/R
AM29F040B-90PC 制造商:Spansion 功能描述:IC, FLASH MEM, 4MBIT, 90NS, 32-DIP, Memory Type:Flash - NOR, Memory Size:4Mbit,
AM29F040B-90PD 制造商:Spansion 功能描述:IC FLASH 4MB 29F040 DIP32