l033c12v Advanced Micro Devices, l033c12v Datasheet - Page 24

• Manufacturer Part Number: l033c12v
• Description: 32 Megabit 4 M X 8-bit Cmos 3.0 Volt-only Uniform Sector Flash Memory - Advanced Micro Devices
• Manufacturer: 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. Ad-
dresses 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 cycles
4. Address bits are don’t care for unlock and command cycles,
5. No unlock or command cycles required when device is in read
6. The Reset command is required to return to the read mode
7. The fourth cycle of the autoselect command sequence is a
Read (Note 5)
Reset (Note 6)
Byte Program
Unlock Bypass
Unlock Bypass Program
(Note 10)
Unlock Bypass Reset
(Note 11)
Chip Erase
Sector Erase
Erase Suspend (Note 12)
Erase Resume (Note 13)
CFI Query (Note 14)
are write operations.
except when PA or SA is required.
mode.
when the device is in the autoselect mode or if DQ5 goes high.
read cycle.
Command Sequence
Manufacturer ID (Note 8)
Device ID (Note 8)
Sector Protect Verify
(Note 9)
(Note 1)
1
1
4
4
4
4
3
2
2
6
6
1
1
1
Table 9. Am29LV033C Command Definitions
Addr Data Addr Data
XXX
XXX
XXX
XXX
XXX
XXX
XXX
XXX
XXX
XXX
XXX
XXX
XXX
XXX
RA
First
RD
AA
AA
AA
AA
AA
AA
AA
F0
A0
B0
90
30
98
XXX
XXX
XXX
XXX
XXX
XXX
XXX
XXX
XXX
PA
Second
Am29LV033C
PD
55
55
55
55
55
00
55
55
0XXXXX
0XXXXX
0XXXXX
2XXXXX
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
A21–A16 uniquely select any sector.
8. In the third and fourth cycles of the command sequence, set
9. In the third cycle of the command sequence, address bit A21
10. The Unlock Bypass command is required prior to the Unlock
11. The Unlock Bypass Reset command is required to return to
12. The system may read and program functions in non-erasing
13. The Erase Resume command is valid only during the Erase
14. Command is valid when device is ready to read array data or
Addr
XXX
XXX
XXX
XXX
or
Bus Cycles (Notes 2–4)
A21 to 0.
must be set to 0 if verifying sectors 0–31, or to 1 if verifying
sectors 32–64. The data in the fourth cycle is 00h for an
unprotected sector/sector block and 01h for a protected
sector/sector block.
Bypass Program command.
reading array data when the device is in the Unlock Bypass
mode.
sectors, or enter the autoselect mode, when in the Erase
Suspend mode. The Erase Suspend command is valid only
during a sector erase operation.
Suspend mode.
when device is in autoselect mode.
Third
Data
A0
90
90
90
20
80
80
0XXX00
0XXX01
Addr
XXX
XXX
X02
SA
PA
Fourth
Data Addr Data Addr Data
PD
A3
AA
AA
01
00
01
XXX
XXX
Fifth
55
55
XXX
SA
Sixth
10
30
23