參數(shù)資料
型號(hào)： SST49LF020
廠商： Silicon Storage Technology, Inc.
英文描述： 2 Megabit LPC Flash
中文描述： 2兆位LPC閃光
文件頁(yè)數(shù)： 22/48頁(yè)
文件大?。?/td> 724K
代理商： SST49LF020
22
Advance Information
4 Mbit LPC Flash
SST49LF040
2001 Silicon Storage Technology, Inc.
S71213-00-000
11/01 562
TABLE 17: I
NTERFACE
M
EASUREMENT
C
ONDITION
P
ARAMETERS
Symbol
V
TH1
V
TL1
V
TEST
V
MAX1
Input Signal Edge Rate
Value
0.6 V
DD
0.2 V
DD
0.4 V
DD
0.4 V
DD
1 V/ns
Units
V
V
V
V
T17.0 562
1. The input test environment is done with 0.1 V
DD
of overdrive over V
IH
and V
IL
. Timing parameters must be met with no more over-
drive than this. V
MAX
specified the maximum peak-to-peak waveform allowed for measuring input timing. Production testing may use
different voltage values, but must correlate results back to these parameters
TABLE 18: S
TANDARD
LPC M
EMORY
C
YCLE
D
EFINITION
(LPC M
ODE
)
Field
START
No. of Clocks
1
1
Description
“0000b” appears on LPC bus to indicate the start of cycle
Cycle Type: Indicates the type of cycle. Bits 3:2 must be “01b” for memory cycle. Bit 1
indicates the type of transfer “0” for Read, “1” for write. DIR: Indicates the direction of the
transfer. “0b” for Read, “1b” for Write. Bit 0 is reserved. “010Xb” indicates memory Read
cycle; while “011xb” indicates memory Write cycle.
The last component driving LAD[3:0] will drive it to “1111b” during the first clock, and tri-
state it during the second clock.
Address Phase for Memory Cycle. LPC supports the 32-bit address protocol. The
addresses transfer most significant nibble first and least significant nibble last. (i.e.,
Address[31:28] on LAD[3:0] first, and Address[3:0] on LAD[3:0] last.)
Synchronize to host or peripheral by adding wait states. “0000b” means Ready, “0101b”
means Short Wait, “0110b” means Long Wait, “1001b” for DMA only, “1010b” means
error, other values are reserved. The SST49LF040 only supports “Ready” sync.
Data Phase for Memory Cycle.
The data transfer least significant nibble first and most significant nibble last.
(i.e., DQ[3:0] on LAD[3:0] first, then DQ[7:4] on LAD[3:0] last.)
CYCTYPE + DIR
TAR
2
ADDR
8
Sync
N
Data
2
T18.1 562
相關(guān)PDF資料
PDF描述
SST49LF020-33-4C-NH 2 Megabit LPC Flash
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SST49LF020-33-4C-NH 功能描述:閃存 2M LPC Interface RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲(chǔ)類型:Flash 存儲(chǔ)容量:2 MB 結(jié)構(gòu):256 K x 8 定時(shí)類型: 接口類型:SPI 訪問(wèn)時(shí)間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
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
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