參數(shù)資料
型號: AT45DB321B-TC
廠商: ATMEL CORP
元件分類: DRAM
英文描述: 32-megabit 2.7-volt Only DataFlash
中文描述: 32M X 1 FLASH 2.7V PROM, PDSO32
封裝: 8 X 20 MM, PLASTIC, MO-142BD, TSOP1-32
文件頁數(shù): 14/32頁
文件大?。?/td> 230K
代理商: AT45DB321B-TC
14
AT45DB321B
2223D–DFLASH–10/02
Input Test Waveforms and Measurement Levels
t
R
, t
F
< 3 ns (10% to 90%)
Output Test Load
AC Waveforms
Two different timing diagrams are shown below. Waveform 1 shows the SCK signal
being low when CS makes a high-to-low transition, and Waveform 2 shows the SCK sig-
nal being high when CS makes a high-to-low transition. Both waveforms show valid
timing diagrams. The setup and hold times for the SI signal are referenced to the low-to-
high transition on the SCK signal.
Waveform 1 shows timing that is also compatible with SPI Mode 0, and Waveform 2
shows timing that is compatible with SPI Mode 3.
Waveform 1 – Inactive Clock Polarity Low and SPI Mode 0
Waveform 2 – Inactive Clock Polarity High and SPI Mode 3
AC
DRIVING
LEVELS
AC
MEASUREMENT
LEVEL
0.45V
2.0
0.8
2.4V
DEVICE
UNDER
TEST
30 pF
CS
SCK
SI
SO
t
CSS
VALID IN
t
H
t
SU
t
WH
t
WL
t
CSH
t
CS
t
V
HIGH IMPEDANCE
VALID OUT
t
HO
t
DIS
HIGH IMPEDANCE
CS
SCK
SI
SO
t
CSS
VALID IN
t
H
t
SU
t
WL
t
WH
t
CSH
t
CS
t
V
HIGH Z
VALID OUT
t
HO
t
DIS
HIGH IMPEDANCE
相關(guān)PDF資料
PDF描述
AT45DB321B-TI 32-megabit 2.7-volt Only DataFlash
AT45DB321C-CC 32 MEGABIT 2.7 VOLT DATAFLASH
AT45DB321C-CI 32 MEGABIT 2.7 VOLT DATAFLASH
AT45DB321C-CNC 32 MEGABIT 2.7 VOLT DATAFLASH
AT45DB321C-RC DIODE/SM,REC*1A*60V
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