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A29002TV-120 Datasheet(PDF) 11 Page - AMIC Technology

Part # A29002TV-120
Description  256K X 8 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory
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Manufacturer  AMICC [AMIC Technology]
Direct Link  http://www.amictechnology.com
Logo AMICC - AMIC Technology

A29002TV-120 Datasheet(HTML) 11 Page - AMIC Technology

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A29002/A290021 Series
(February, 2002, Version 1.0)
11
AMIC Technology, Inc.
Table 5. A29002/A290021 Command Definitions
Bus Cycles (Notes 2 - 4)
First
Second
Third
Fourth
Fifth
Sixth
Command
Sequence
(Note 1)
Addr Data
Addr Data
Addr Data Addr
Data Addr Data Addr Data
Read (Note 5)
1
RA
RD
Reset (Note 6)
1
XXX
F0
Manufacturer ID
4
555
AA
2AA
55
555
90
X00
37
Top
8C
Device ID
Bottom
4
555
AA
2AA
55
555
90
X01
0D
Continuation ID
4
555
AA
2AA
55
555
90
X03
7F
00
Autoselect
(Note 7)
Sector Protect Verify
(Note 8)
4
555
AA
2AA
55
555
90
SA
X02
01
Program
4
555
AA
2AA
55
555
A0
PA
PD
Chip Erase
6
555
AA
2AA
55
555
80
555
AA
2AA
55
555
10
Sector Erase
6
555
AA
2AA
55
555
80
555
AA
2AA
55
SA
30
Erase Suspend (Note 9)
1
XXX
B0
Erase Resume (Note 10)
1
XXX
30
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 A17 - A13 select a unique sector.
Note:
1.
See Table 1 for description of bus operations.
2.
All values are in hexadecimal.
3.
Except when reading array or autoselect data, all bus cycles are write operation.
4.
Address bits A17 - A12 are don't cares for unlock and command cycles, unless SA or PA required.
5.
No unlock or command cycles required when reading array data.
6.
The Reset command is required to return to reading array data when device is in the autoselect mode, or if I/O5 goes high
(while the device is providing status data).
7.
The fourth cycle of the autoselect command sequence is a read cycle.
8.
The data is 00h for an unprotected sector and 01h for a protected sector. See "Autoselect Command Sequence" for more
information.
9.
The system may read and program in non-erasing sectors, or enter the autoselect mode, when in the Erase Suspend
mode.
10. The Erase Resume command is valid only during the Erase Suspend mode.
11. The time between each command cycle has to be less than 50
µs.


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