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参数资料
| 型号： | AT45DB021B-TU |
| 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, GREEN, PLASTIC, MO-183, TSOP1-28 |
| 文件页数： | 15/32页 |
| 文件大小： | 304K |
| 代理商： | AT45DB021B-TU |
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15
1937J–DFLSH–9/05
AT45DB021B
9.
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 signal 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 tim-
ing that is compatible with SPI Mode 3.
9.1
Waveform 1 – Inactive Clock Polarity Low and SPI Mode 0
9.2
Waveform 2 – Inactive Clock Polarity High and SPI Mode 3
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-SC | 2-megabit 2.7-volt Only DataFlash?? |
| AT45DB021B-CC | 2-megabit 2.7-volt Only DataFlash?? |
| AT45DB021B-CI | 2-megabit 2.7-volt Only DataFlash?? |
| AT45DB021B-RC | 2-megabit 2.7-volt Only DataFlash?? |
| AT45DB021B-RI | 2-megabit 2.7-volt Only DataFlash?? |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| AT45DB021D_09 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-megabit 2.7-volt Minimum DataFlash |
| AT45DB021D-MH-SL954 | 制造商:Adesto Technologies Corporation 功能描述:8-UDFN (5X6), IND TEMP, 2.7V, TRAY, 256 BYTE PAGE - Trays |
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