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參數(shù)資料
| 型號： | SST49LF020-33-4C-NH |
| 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, PQCC32 |
| 封裝： | PLASTIC, MS-016AE, LCC-32 |
| 文件頁數(shù)： | 12/48頁 |
| 文件大小： | 724K |
| 代理商： | SST49LF020-33-4C-NH |
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12
Advance Information
4 Mbit LPC Flash
SST49LF040
2001 Silicon Storage Technology, Inc.
S71213-00-000
11/01 562
FIGURE
5: B
OOT
C
ONFIGURATION
FROM
THE
B
OTTOM
OF
THE
4 GB
YTE
S
YSTEM
M
EMORY
M
AP
Registers
There are two registers available on the SST49LF040, the
General Purpose Inputs Registers (GPI_REG) and the
JEDEC ID Registers. Since multiple LPC memory devices
may be used to increase memory densities, these registers
appear at its respective address location in the 4 GByte
system memory map. Unused register locations will read
as 00H. Any attempt to read registers during internal Write
operation will respond as “Write Operation Status Detec-
tion” (Data# Polling or Toggle Bit). Tables 4 and 5 list
GPI_REG and JEDEC ID address locations for
SST49LF040 with its respective device strapping.
General Purpose Inputs Register
The GPI_REG (General Purpose Inputs Register) passes
the state of GPI[4:0] pins at power-up on the SST49LF040.
It is recommended that the GPI[4:0] pins be in the desired
state before LFRAME# is brought low for the beginning of
the next bus cycle, and remain in that state until the end of
the cycle. There is no default value since this is a pass-
through register. See Table 3, General Purpose Inputs
Register, for the GPI_REG bits and functions and Tables 4
and 5 for memory address location for its respective device
strapping.
Device #14
Device #15
8 MByte
Register Access
8 MByte
Memory Access
562 ILL F02.3
Device #2
Device #3
Device #1
Device #0
(Boot Block)
Device #14
Device #15
(Boot Block)
(Boot Block)
(Boot Block)
Device #3
Device #2
(Boot Block)
(Boot Block)
Device #1
Boot Device #0
00FF FFFFH
0080 0000H
007F FFFFH
0000 0000H
TABLE
3: G
ENERAL
P
URPOSE
I
NPUTS
R
EGISTER
Bit
7:5
4
Function
Reserved
GPI[4]
Reads status of general
purpose input pin
GPI[3]
Reads status of general
purpose input pin
GPI[2]
Reads status of general
purpose input pin
GPI[1]
Reads status of general
purpose input pin
GPI[0]
Reads status of general
purpose input pin
Pin #
32-PLCC
-
30
32-TSOP
-
6
3
3
11
2
4
12
1
5
13
0
6
14
T3.1 562
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SST49LF020-33-4C-WH | 2 Megabit LPC Flash |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SST49LF020-33-4C-WH | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Megabit LPC Flash |
| 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 |
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