参数资料
型号: AT45DB011B-XU
厂商: Atmel
文件页数: 14/32页
文件大小: 0K
描述: IC FLASH 1MBIT 20MHZ 14TSSOP
标准包装: 96
格式 - 存储器: 闪存
存储器类型: DataFLASH
存储容量: 1M(512 页 x 264 字节)
速度: 20MHz
接口: SPI 3 线串行
电源电压: 2.7 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 14-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 14-TSSOP
包装: 管件
Input Test Waveforms and Measurement Levels
AC
DRIVING
LEVELS
2.4V
0.45V
2.0
0.8
AC
MEASUREMENT
LEVEL
t R , t F < 3 ns (10% to 90%)
Output Test Load
DEVICE
UNDER
TEST
30 pF
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
timing that is compatible with SPI Mode 3.
Waveform 1 – Inactive Clock Polarity Low and SPI Mode 0
t CS
CS
t CSS
t WH
t WL
t CSH
SCK
t V
t HO
t DIS
SO
HIGH IMPEDANCE
VALID OUT
HIGH IMPEDANCE
SI
t SU
VALID IN
t H
Waveform 2 – Inactive Clock Polarity High and SPI Mode 3
t CS
CS
t CSS
t WL
t WH
t CSH
SCK
t V
t HO
t DIS
SO
HIGH Z
VALID OUT
HIGH IMPEDANCE
SI
t SU
VALID IN
t H
14
AT45DB011B
1984J–DFLASH–06/06
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