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参数资料
| 型号： | AT45DB021B-TI |
| 厂商： | ATMEL CORP |
| 元件分类： | DRAM |
| 英文描述： | 2-megabit 2.7-volt Only DataFlash?? |
| 中文描述： | 2M X 1 FLASH 2.7V PROM, PDSO28 |
| 封装： | 18 X 13.40 MM, PLASTIC, MO-183, TSOP1-28 |
| 文件页数： | 14/33页 |
| 文件大小： | 261K |
| 代理商： | AT45DB021B-TI |
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14
AT45DB021B
1937F
–
DFLSH
–
10/02
InputTestWaveforms
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
相关PDF资料 |
PDF描述 |
|---|---|
| AT45DB021B | 2-megabit 2.7-volt Only DataFlash?? |
| AT45DB021D | 2-megabit 2.7-volt DataFlash |
| AT45DB021D_07 | 2-megabit 2.7-volt DataFlash |
| AT45DB021D-MU | 2-megabit 2.7-volt DataFlash |
| AT45DB021D-SSU | 2-megabit 2.7-volt DataFlash |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT45DB021BTU | 制造商:Atmel Corporation 功能描述: |
| AT45DB021B-TU | 功能描述:闪存 DATAFLASH 2M SERIAL 2.7V IND TEMP GREEN RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| AT45DB021D | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-megabit 2.7-volt DataFlash |
| AT45DB021D_07 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-megabit 2.7-volt DataFlash |
| AT45DB021D_08 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-megabit 2.7-volt Minimum DataFlash |
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