AM29LV001B AMD [Advanced Micro Devices], AM29LV001B Datasheet - Page 16

• Manufacturer Part Number: AM29LV001B
• Description: 1 Megabit (128 K x 8-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
• Manufacturer: AMD [Advanced Micro Devices]

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 are latched on the falling edge of the WE# or CE#
pulse.
Notes:
1. See Table 1 for descriptions of bus operations.
2. All values are in hexadecimal.
3. Except when reading array or autoselect data, all bus
4. Address bits A16–A11 are don’t care for unlock and
5. No unlock or command cycles required when device is in
6. The Reset command is required to return to the read
7. The fourth cycle of the autoselect command sequence is
Read (Note 5)
Reset (Note 6)
Byte Program
Unlock Bypass
Unlock Bypass Program
(Note 9)
Unlock Bypass Reset
(Note 10)
Chip Erase
Sector Erase
Erase Suspend (Note 11)
Erase Resume (Note 12)
Command Sequence
cycles are write operations.
command cycles, unless SA or PA required.
read mode.
mode when the device is in the autoselect mode or if DQ5
goes high.
a read cycle.
Manufacturer ID
Device ID, Top Boot
Block
Device ID, Bottom
Boot Block
Sector Protect
Verify (Note 8)
(Note 1)
1
1
4
4
4
4
3
2
2
6
6
1
1
Addr
XXX
XXX
XXX
XXX
XXX
555
555
555
555
555
555
555
RA
Table 5. Am29LV001B Command Definitions
First
Data
RD
AA
AA
AA
AA
AA
A0
AA
AA
B0
F0
90
30
Addr
XXX
2AA
2AA
2AA
2AA
2AA
2AA
2AA
PA
Second
P R E L I M I N A R Y
Am29LV001B
Data
PD
55
55
55
55
55
00
55
55
Addr
555
555
555
555
555
555
555
PD = Data to be programmed at location PA. Data is latched
on the rising edge of WE# or CE# pulse.
SA = Address of the sector to be erased or verified. Address
bits A16–A12 uniquely select any sector.
8. The data is 00h for an unprotected sector and 01h for a
9. The Unlock Bypass command is required prior to the
10. The Unlock Bypass Reset command is required to return
11. The system may read and program functions in non-
12. The Erase Resume command is valid only during the
Bus Cycles (Notes 2–4)
Third
protected sector. The complete bus address in the fourth
cycle is composed of the sector address (A16–A12),
A1 = 1, and A0 = 0.
Unlock Bypass Program command.
to reading array data when the device is in the Unlock
Bypass mode.
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.
Erase Suspend mode.
Data
90
90
90
A0
20
80
80
Addr
X00
X01
X02
555
555
SA
PA
Fourth
Data
ED
6D
PD
AA
AA
01
00
01
Addr
2AA
2AA
Fifth
Data
55
55
Addr
555
SA
Sixth
Data
10
30
16