AM29LV800D_06 Datasheet, PDF (21/46 Pages) SPANSION – 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory

DATA SHEET
Table 5. Am29LV800D Command Definitions
Command
Sequence
(Note 1)
Read (Note 6)
Reset (Note 7)
Manufacturer ID
Device ID,
Top Boot Block
Device ID,
Bottom Boot Block
First
Second
Addr Data Addr Data
1 RA RD
1 XXX F0
Word
555
2AA
4
AA
55
Byte
AAA
555
Word
555
2AA
4
AA
55
Byte
AAA
555
Word
555
2AA
4
AA
55
Byte
AAA
555
Sector Protect Verify
(Note 9)
Word
555
2AA
4
AA
55
Byte
AAA
555
Program
Word
555
2AA
4
AA
55
Byte
AAA
555
Unlock Bypass
Word
555
2AA
3
AA
55
Byte
AAA
555
Unlock Bypass Program (Note 10) 2 XXX A0 PA PD
Unlock Bypass Reset (Note 11) 2 XXX 90 XXX 00
Chip Erase
Word
555
2AA
6
AA
55
Byte
AAA
555
Sector Erase
Word
555
2AA
6
AA
55
Byte
AAA
555
Erase Suspend (Note 12)
1 XXX B0
Erase Resume (Note 13)
1 XXX 30
Bus Cycles (Notes 2-5)
Third
Fourth
Addr Data Addr Data
Fifth
Sixth
Addr Data Addr Data
555
AAA
555
AAA
555
AAA
555
AAA
555
AAA
555
AAA
90 X00 01
X01 22DA
90
X02 DA
X01 225B
90
X02 5B
(SA) ^XX00
X02 _XX01
90
(SA) ⁰⁰
X04 ₀₁
A0 PA PD
20
555
AAA
555
AAA
555
2AA
555
80
AA
55
10
AAA
555
AAA
555
2AA
80
AA
55 SA 30
AAA
555
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–A12 uniquely select any
sector.
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 are write operations.
4. Data bits DQ15–DQ8 are don’t cares for unlock and
command cycles.
5. Address bits A18–A11 are don’t cares for unlock and
command cycles, unless PA or SA required.
6. No unlock or command cycles required when reading array
data.
7. 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).
8. The fourth cycle of the autoselect command sequence is a
read cycle.
9. The data is 00h for an unprotected sector and 01h for a
protected sector. See “Autoselect Command Sequence” for
more information.
10. The Unlock Bypass command is required prior to the
Unlock Bypass Program command.
11. The Unlock Bypass Reset command is required to return to
reading array data when the device is in the unlock bypass
mode.
12. 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.
13. The Erase Resume command is valid only during the
Erase Suspend mode.
Am29LV800D_00_A7 December 4, 2006
Am29LV800D
19