參數(shù)資料
型號(hào)： Am29F004B-T-70JE
廠商： Advanced Micro Devices, Inc.
英文描述： 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory
中文描述： 4兆位（512畝× 8位）的CMOS 5.0伏，只引導(dǎo)扇區(qū)閃存
文件頁(yè)數(shù)： 18/37頁(yè)
文件大?。?/td> 993K
代理商： AM29F004B-T-70JE
16
Am29F004B
8/5/05
A D V A N C E I N F O R M A T I O N
Legend:
X = Don’t care
RA = Address of the memory location to be read.
RD = Data read from location RA during read operation.
PA = Address of the memory location to be programmed. Addresses
latch on the falling edge of the WE# or CE# pulse, whichever
happens later.
PD = Data to be programmed at location PA. Data latches on the
rising edge of WE# or CE# pulse, whichever happens first.
SA = Address of the sector to be verified (in autoselect mode) or
erased. Address bits A18–A13 uniquely select any sector.
SA+ = The sector address must be asserted in combination with A0
= 0, A1 = 1, A5 = 1, and A6 = 0 (for protect) or 1 (for unprotect).
Notes:
1.
2.
3.
See Table 1 for description of bus operations.
All values are in hexadecimal.
Except when reading array or autoselect data, all bus cycles are
write operations.
Address bits A18–A11 are don’t cares for unlock and command
cycles, except when PA or SA is required.
No unlock or command cycles required when reading array data.
The Reset command is required to return to reading array data
when device is in the autoselect mode, or if DQ5 goes high (while
the device is providing status data).
The fourth cycle of the autoselect command sequence is a read
cycle.
4.
5.
6.
7.
8.
The data is 00h for an unprotected sector and 01h for a protected
sector. See
Autoselect Command Sequence on page 13
for
more information.
To activate the sequence, OE# must be at V
ID
.
10. The sector relock command in the second cycle may be written
as either 00h or F0h.
11. The system may read and program in non-erasing sectors, or
enter the autoselect mode, when in the Erase Suspend mode.
The Erase Suspend command is valid only during a sector erase
operation.
12. The Erase Resume command is valid only during the Erase Sus-
pend mode.
9.
Table 5. Am29F004B Command Definitions
Command
Sequence
(Note 1)
C
Bus Cycles (Notes 2–4)
Third
Addr
Data
First
Second
Addr
Fourth
Addr
Fifth
Sixth
Addr
RA
XXX
555
Data
RD
F0
AA
Data
Data
Addr
Data
Addr
Data
Read (Note 5)
Reset (Note 6)
1
1
4
Autoselect
(Note 7)
Manufacturer ID
Device ID,
Top Boot Block
Device ID,
Bottom Boot Block
2AA
55
555
90
X00
01
4
555
AA
2AA
55
555
90
X01
77
4
555
AA
2AA
55
555
90
X01
7B
Sector Protect Verify
(Note 8)
4
555
AA
2AA
55
555
90
(SA)
X02
00
01
PD
AA
AA
Program
Chip Erase
Sector Erase
Erase Suspend (Note 11)
Erase Resume (Note 12)
Temporary
Sector
Unprotect
Mode (Note
9)
Sector Unlock (Note 9)
Sector Relock (Notes 9, 10)
4
6
6
1
1
3
2
4
555
555
555
XXX
XXX
555
XXX
XXX
AA
AA
AA
B0
30
AA
A0
80
2AA
2AA
2AA
55
55
55
555
555
555
A0
80
80
PA
555
555
2AA
2AA
55
55
555
SA
10
30
Enter TSU Mode
Program
Sector Erase
2AA
PA
XXX
55
PD
AA
555
20
XXX
55
SA
30
Chip Erase
4
XXX
80
XXX
AA
XXX
55
555
10
3
2
555
XXX
AA
90
2AA
XXX
55
00
555
24
SA+
60
SA+
60
SA+
40
相關(guān)PDF資料
PDF描述
Am29F004B-T-70JF 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory
Am29F004B-B-70JK 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory
Am29F004B-T-70JI 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory
Am29F004B-T-70JK 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory
AM29F010-90DGC1 1 Megabit (128 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory-Die Revision 1
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