l033c12v Advanced Micro Devices, l033c12v Datasheet - Page 15

• 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

14
Sector Block
SA12-SA15
SA16-SA19
SA20-SA23
SA24-SA27
SA28-SA31
SA32-SA35
SA36-SA39
SA40-SA43
SA44-SA47
SA48-SA51
SA52-SA55
SA56-SA59
SA60-SA62
SA8-SA11
SA1-SA3
SA4-SA7
Sector/
SA63
SA0
Table 4. Sector Block Addresses for
Protection/Unprotection
000100, 000101,
001000, 001001,
001100, 001101,
010000, 010001,
010100, 010101,
011000, 011001,
011100, 011101,
100000, 100001,
100100, 100101,
101000, 101001,
101100, 101101,
110000, 110001,
110100, 110101,
111000, 111001,
111100, 111101,
000001,000010,
000110, 000111
001010, 001011
001110, 001111
010010, 010011
010110, 010111
011010, 011011
011110, 011111
100010, 100011
100110, 100111
101010, 101011
101110, 101111
110010, 110011
110110, 110111
111010, 111011
A21–A16
000000
000011
111110
111111
Sector Block Size
192 (3x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
192 (4x64) Kbytes
64 Kbytes
64 Kbytes
Sector/
Am29LV033C
Temporary Sector/Sector Block Unprotect
(Note: For the following discussion, the term “sector”
applies to both sectors and sector blocks. A sector
block consists of two or more adjacent sectors that are
protected or unprotected at the same time (see Table
4).
This feature allows temporary unprotection of previ-
ously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the RE-
SET# pin to V
sectors can be programmed or erased by selecting the
sector addresses. Once V
SET# pin, all the previously protected sectors are
protected again. Figure 1 shows the algorithm, and
Figure 21 shows the timing diagrams, for this feature.
Notes:
1. All protected sectors unprotected.
2. All previously protected sectors are protected once
Figure 1. Temporary Sector Unprotect Operation
again.
ID
. During this mode, formerly protected
Unprotect Completed
Program Operations
Temporary Sector
Perform Erase or
RESET# = V
RESET# = V
(Note 1)
(Note 2)
ID
START
is removed from the RE-
ID
IH