参数资料
型号: MR0A08BCYS35
厂商: Everspin Technologies Inc
文件页数: 8/23页
文件大小: 0K
描述: IC MRAM 1MBIT 35NS 44TSOP
标准包装: 135
格式 - 存储器: RAM
存储器类型: MRAM(磁阻 RAM)
存储容量: 1M (128K x 8)
速度: 35ns
接口: 并联
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 44-TSOP(0.400",10.16mm 宽)
供应商设备封装: 44-TSOP II
包装: 托盘
其它名称: 819-1000
MR0A08B
Power Up and Power Down Sequencing
The MRAM is protected from write operations whenever V DD is less than V WI . As soon as V DD exceeds
V DD (min), there is a startup time of 2 ms before read or write operations can start. This time allows memory
power supplies to stabilize.
The E and W control signals should track V DD on power up to V DD - 0.2 V or V IH (whichever is lower) and
remain high for the startup time. In most systems, this means that these signals should be pulled up with a
resistor so that signal remains high if the driving signal is Hi-Z during power up. Any logic that drives E and
W should hold the signals high with a power-on reset signal for longer than the startup time.
During power loss or brownout where V DD goes below V WI , writes are protected and a startup time must be
observed when power returns above V DD (min).
Figure 3 – Power Up and Power Down Diagram
V WI
V DD
BROWNOUT or POWER LOSS
2 ms
STARTUP
2 ms
RECOVER
READ/WRITE
INHIBITED
NORMAL
OPERATION
READ/WRITE
INHIBITED
NORMAL
OPERATION
V IH
V IH
E
W
Copyright ? 2013 Everspin Technologies
8
MR0A08B Rev. 8, 10/2013
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