L200BB55RD AMD [Advanced Micro Devices], L200BB55RD Datasheet - Page 13

• Manufacturer Part Number: L200BB55RD
• Description: 2 Megabit (256 K x 8-Bit/128 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
• Manufacturer: AMD [Advanced Micro Devices]

If RESET# is asserted during a program or erase oper-
ation, the RY/BY# pin remains a “0” (busy) until the
internal reset operation is complete, which requires a
time of t
system can thus monitor RY/BY# to determine whether
the reset operation is complete. If RESET# is asserted
when a program or erase operation is not executing
(RY/BY# pin is “1”), the reset operation is completed
within a time of t
Note for Tables 2 and 3: Address range is A16:A-1 in byte mode and A16:A0 in word mode. See “Word/Byte Configuration”
section.
Autoselect Mode
The autoselect mode provides manufacturer and
device identification, and sector protection verification,
through identifier codes output on DQ7–DQ0. This
mode is primarily intended for programming equipment
to automatically match a device to be programmed with
its corresponding programming algorithm. However,
the autoselect codes can also be accessed in-system
through the command register.
When using programming equipment, the autoselect
mode requires V
A9. Address pins A6, A1, and A0 must be as shown in
October 10, 2006 21521D6
Sector
Sector
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA0
SA1
SA2
SA3
SA4
SA5
SA6
READY
A16
A16
0
0
1
1
1
1
1
0
0
0
0
0
1
1
(during Embedded Algorithms). The
ID
READY
(11.5 V to 12.5 V) on address pin
A15
A15
Table 3. Am29LV200BB Bottom Boot Block Sector Address Table
0
1
0
1
1
1
1
0
0
0
0
1
0
1
Table 2. Am29LV200BT Top Boot Block Sector Address Table
(not during Embedded Algo-
A14
A14
X
X
X
X
X
X
0
1
1
1
0
0
0
1
A13
A13
X
X
X
X
X
X
X
X
0
0
1
0
1
1
A12
A12
D A T A S H E E T
X
X
X
X
X
X
X
X
X
X
0
1
0
1
Am29LV200B
Sector Size
Sector Size
(Kbytes/
Kwords)
(Kbytes/
Kwords)
64/32
64/32
64/32
32/16
32/16
64/32
64/32
64/32
16/8
16/8
8/4
8/4
8/4
8/4
rithms). The system can read data t
pin returns to V
Refer to the AC Characteristics tables for RESET#
parameters and to Figure 14 for the timing diagram.
Output Disable Mode
When the OE# input is at V
disabled. The output pins are placed in the high imped-
ance state.
Table 4. In addition, when verifying sector protection,
the sector address must appear on the appropriate
highest order address bits (see Tables 2 and 3). Table
4 shows the remaining address bits that are don’t care.
When all necessary bits have been set as required, the
programming equipment may then read the corre-
sponding identifier code on DQ7–DQ0.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in Table 5. This method
does not require V
Definitions” for details on using the autoselect mode.
3A000h–3BFFFh
3C000h–3FFFFh
00000h–0FFFFh
10000h–1FFFFh
20000h–2FFFFh
08000h–0FFFFh
10000h–1FFFFh
20000h–2FFFFh
30000h–3FFFFh
Address Range
30000h–37FFFh
38000h–39FFFh
Address Range
00000h–03FFFh
04000h–05FFFh
06000h–07FFFh
IH
Address Range (in hexadecimal)
Address Range (in hexadecimal)
.
(x8)
(x8)
ID
. See “Am29LV200B Command
IH
, output from the device is
RH
1C000h–1CFFFh
1D000h–1DFFFh
08000h–0FFFFh
18000h–1BFFFh
1E000h–1FFFFh
08000h–0FFFFh
18000h–1FFFFh
Address Range
00000h–07FFFh
10000h–17FFFh
Address Range
00000h–01FFFh
02000h–02FFFh
03000h–03FFFh
04000h–07FFFh
10000h–17FFFh
after the RESET#
(x16)
(x16)
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