參數(shù)資料
型號： SST49LF020-33-4C-WH
廠商： SILICON STORAGE TECHNOLOGY INC
元件分類： PROM
英文描述： 2 Megabit LPC Flash
中文描述： 256K X 8 FLASH 3V PROM, 11 ns, PDSO32
封裝： 8 X 14 MM, MO-142BA, TSOP1-32
文件頁數(shù)： 11/48頁
文件大?。?/td> 724K
代理商： SST49LF020-33-4C-WH
Advance Information
4 Mbit LPC Flash
SST49LF040
11
2001 Silicon Storage Technology, Inc.
S71213-00-000
11/01 562
With hardware strapping, ID bits in the address field is
included in every LPC address memory cycle. The address
bits [A22: A19] are used to select the device with proper
IDs. The ID strapping bits in the address field will be
decoded depending on where the device is mapped on the
4 GByte system memory map. See Table 2 for ID address
bits decoding. The device will compare these bits with
ID[3:0]’s strapping values. If there is a mismatch, the device
will ignore the remainder of the cycle.
FIGURE
4: B
OOT
C
ONFIGURATION
FROM
THE
T
OP
OF
THE
4 GB
YTE
S
YSTEM
M
EMORY
M
AP
TABLE
2: ID S
TRAPPING
V
ALUES
FOR
SST49LF040
Device #
0 (Boot device)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Hardware
Strapping
ID[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Address Bits [A
22
-A
19
]
Decoding
1
4 GByte System Memory
Top
1111b
1110b
1101b
1100b
1011b
1010b
1001b
1000b
0111b
0110b
0101b
0100b
0011b
0010b
0001b
0000b
1. Address bits A
22
-A
19
decoding for multiple device selection
depends on whether the device is mapped from the top of the
4GB system memory map or from the bottom of the 4GB
system memory map.
Bottom
0001b
0000b
0011b
0010b
0101b
0100b
0111b
0110b
1001b
1000b
1011b
1010b
1101b
1100b
1111b
1110b
T2.3 562
(Boot Block)
Boot Device #0
Device #1
Device #2
(Boot Block)
(Boot Block)
8 MByte
Memory Access
8 MByte
Register Access
562 ILL F01.1
(Boot Block)
Device #3
(Boot Block)
Device #14
Device #15
(Boot Block)
Device #1
Device #0
Device #2
Device #3
Device #15
Device #14
FFFF FFFFH
FF80 0000H
FF7F FFFFH
FF00 0000H
相關(guān)PDF資料
PDF描述
SST49LF040-33-4C-NH 4 Mbit LPC Flash
SST49LF040-33-4C-WH 4 Mbit LPC Flash
SST49LF080A 8 Mbit LPC Flash
SST49LF080A-33-4C-NH 8 Mbit LPC Flash
SST49LF080A-33-4C-WH 8 Mbit LPC Flash
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SST49LF020A 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit LPC Flash
SST49LF020A-33-4C-NHE 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit LPC Flash
SST49LF020A-33-4C-WHE 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit LPC Flash
SST49LF030A 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:3 Mbit LPC Flash
SST49LF030A-33-4C-NH 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:3 Mbit LPC Flash
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