参数资料
型号: MR256A08BCYS35R
厂商: Everspin Technologies Inc
文件页数: 8/24页
文件大小: 0K
描述: IC MRAM 256KB 35NS 44TSOP
标准包装: 1,000
格式 - 存储器: RAM
存储器类型: MRAM(磁阻 RAM)
存储容量: 256K (32K 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: 带卷 (TR)
MR256A08B
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 sup-
plies 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 Sequencing Timing 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
MR256A08B Rev. 6, 10/2013
相关PDF资料
PDF描述
MR256D08BMA45R IC MRAM 256KB 45NS 48BGA
MR25H10CDF IC MRAM 1MBIT 40MHZ 8DFN
MR25H256CDF IC MRAM 256KBIT 40MHZ 8DFN
MR25H40CDF IC MRAM 4MBIT 40MHZ 8DFN
MR2A08AMYS35R IC MRAM 4MBIT 35NS 44TSOP
相关代理商/技术参数
参数描述
MR256A08BMA35 功能描述:NVRAM 256Kb 3.3V 35ns 32Kx8 Parallel MRAM RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube
MR256A08BMA35R 功能描述:NVRAM 256Kb 3.3V 35ns 32Kx8 Parallel MRAM RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube
MR256A08BSO35 功能描述:NVRAM 256Kb 3.3V 35ns 32Kx8 Parallel MRAM RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube
MR256A08BSO35R 功能描述:NVRAM 256Kb 3.3V 35ns 32Kx8 Parallel MRAM RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube
MR256A08BYS35 功能描述:NVRAM 256Kb 3.3V 35ns 32Kx8 Parallel MRAM RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube