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参数资料
| 型号： | AT45D081 |
| 厂商： | Atmel Corp. |
| 英文描述： | 8-Megabit 5-volt Only Serial DataFlash |
| 中文描述： | 8兆位5伏只有串行的DataFlash |
| 文件页数： | 7/16页 |
| 文件大小： | 115K |
| 代理商： | AT45D081 |
AT45D081
7
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
wavforms 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
CS
SCK
SI
SO
tCSS
VALID IN
tH
tSU
tWH
tWL
tCSH
tCS
tV
HIGH IMPEDANCE
VALID OUT
tHO
tDIS
HIGH IMPEDANCE
Waveform 2 – Inactive Clock Polarity High
CS
SCK
SI
SO
tCSS
VALID IN
tH
tSU
tWL
tWH
tCSH
tCS
tV
HIGH Z
VALID OUT
tHO
tDIS
HIGH IMPEDANCE
Command Sequence for Read/Write Operations (Except Status Register Read)
Notes:
1.
2.
3.
“r” designates bits reserved for larger densities.
It is recommended that “r” be a logical “0” for densities of 8M bit or smaller.
For densities larger than 8M bit, the “r” bits become the most significant Page Address bit for the appropriate density.
SI
CMD
8 bits
8 bits
8 bits
MSB
Reserved for
larger densities
Page Address
(PA11-PA0)
Byte/Buffer Address
(BA8-BA0/BFA8-BFA0)
LSB
r r r X X X X X
X X X X X X X X
X X X X X X X X
相关PDF资料 |
PDF描述 |
|---|---|
| AT45D081-RC | 8-Megabit 5-volt Only Serial DataFlash |
| AT45D081-RI | 8-Megabit 5-volt Only Serial DataFlash |
| AT45D081-TC | 8-Megabit 5-volt Only Serial DataFlash |
| AT45D081-TI | 8-Megabit 5-volt Only Serial DataFlash |
| AT45D161-JC | 16-Megabit 5-volt Only Serial DataFlash |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT45D081A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8M bit. 5.0-Volt Only Serial-Interface Flash with Two 264-Byte SRAM Buffers. For new designs please use AT45DB081B. |
| AT45D081A-JC | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SPI Serial EEPROM |
| AT45D081A-JI | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SPI Serial EEPROM |
| AT45D081A-RC | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-megabit 5-volt Only Serial DataFlash |
| AT45D081A-RI | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-megabit 5-volt Only Serial DataFlash |
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