参数资料
型号: DS1258W
厂商: MAXIM INTEGRATED PRODUCTS INC
元件分类: DRAM
英文描述: 3.3V 128K x 16 Nonvolatile SRAM(3.3V 128K x 16 非易失性静态RAM)
中文描述: 128K X 16 NON-VOLATILE SRAM MODULE, 150 ns, PDIP40
封装: 0.740 INCH, PLASTIC, DIP-40
文件页数: 1/9页
文件大小: 71K
代理商: DS1258W
DS1258W
3.3V 128K x 16 Nonvolatile SRAM
DS1258W
PRELIMINARY
022598 1/9
FEATURES
10 year minimum data retention in the absence of
external power
Data is automatically protected during a power loss
Separate upper byte and lower byte chip select inputs
Unlimited write cycles
Low–power CMOS
Read and write access times as fast as 150 ns
Lithium energy source is electrically disconnected to
retain freshness until power is applied for the first time
PIN ASSIGNMENT
40–PIN ENCAPSULATED PACKAGE
740 MIL EXTENDED
OE
CEU
CEL
DQ15
DQ14
DQ13
DQ12
WE
A16
A15
A14
A13
A12
A11
A10
A9
GND
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
DQ11
DQ10
DQ9
DQ8
GND
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
A8
A7
A6
A5
A4
A3
A2
A1
A0
PIN DESCRIPTION
A0–A16
DQ0–DQ15
CEU
CEL
WE
OE
V
CC
GND
– Address Inputs
– Data In/Data Out
– Chip Enable Upper Byte
– Chip Enable Lower Byte
– Write Enable
– Output Enable
– Power Supply (+3.3V)
– Ground
DESCRIPTION
The DS1258W 3.3V 128K x 16 Nonvolatile SRAM is a
2,097,152–bit fully static, nonvolatile SRAM, organized
as 131,072 words by 16 bits. Each NV SRAM has a self
contained lithium energy source and control circuitry
which constantly monitors V
CC
for an out–of–tolerance
condition. When such a condition occurs, the lithium
energy source is automatically switched on and write
protection is unconditionally enabled to prevent data
corruption. DIP–package DS1258W devices can be
used in place of solutions which build nonvolatile
128K x 16 memory by utilizing a variety of discrete com-
ponents. There is no limit on the number of write cycles
that can be executed and no additional support circuitry
is required for microprocessor interfacing.
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相关代理商/技术参数
参数描述
DS1258W-100 功能描述:NVRAM 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
DS1258W-100# 功能描述:NVRAM 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
DS1258W-100IND 功能描述:NVRAM 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
DS1258W-100-IND 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3.3V 128k x 16 Nonvolatile
DS1258W-100IND# 功能描述:NVRAM 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