AM29F002BT-55JF Spansion Inc., AM29F002BT-55JF Datasheet - Page 18

• Manufacturer Part Number: AM29F002BT-55JF
• Description: IC 2MEG (256K X 8) 5-VOLT TOP SCTR
• Manufacturer: Spansion Inc.

Command Definitions
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.
Notes:
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
4. Address bits A17–A11 are don’t cares for unlock and
5. No unlock or command cycles required when reading array
6. The Reset command is required to return to reading array
16
Read (Note 5)
Reset (Note 6)
Auto-
select
(Note 7)
Program
Chip Erase
Sector Erase
Erase Suspend (Note 9)
Erase Resume (Note 10)
are write operations.
command cycles, except when PA or SA is required.
data.
data when device is in the autoselect mode, or if DQ5 goes
high (while the device is providing status data).
Manufacturer ID
Device ID,
Top Boot Block
Device ID,
Bottom Boot Block
Sector Protect Verify
(Note 8)
Command
Sequence
(Note 1)
Table 5. Am29F002B/Am29F002NB Command Definitions
1
1
4
4
4
4
4
6
6
1
1
Addr
XXX
XXX
XXX
555
555
555
555
555
555
555
RA
First
Am29F002B/Am29F002NB
Data
D A T A
RD
AA
AA
AA
AA
AA
AA
AA
F0
B0
30
Addr
2AA
2AA
2AA
2AA
2AA
2AA
2AA
Second
Data
S H E E T
55
55
55
55
55
55
55
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 uniquely select any sector.
7. The fourth cycle of the autoselect command sequence is a
8. The data is 00h for an unprotected sector and 01h for a
9. The system may read and program in non-erasing sectors, or
10. The Erase Resume command is valid only during the Erase
read cycle.
protected sector. See “Autoselect Command Sequence” for
more information.
enter the autoselect mode, when in the Erase Suspend
mode. The Erase Suspend command is valid only during a
sector erase operation.
Suspend mode.
Addr
555
555
555
555
555
555
555
Bus Cycles (Notes 2–4)
Third
Data Addr
90
90
90
90
A0
80
80
(SA)
X00
X01
X01
X02
555
555
PA
Fourth
Data
PD
AA
AA
01
B0
34
00
01
21527D5 November 1, 2006
Addr Data
2AA
2AA
Fifth
55
55
Addr
555
SA
Sixth
Data
10
30