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HMN1288J

更新时间： 2024-11-11 22:33:35
品牌 Logo 应用领域
其他 - ETC 静态存储器
页数 文件大小 规格书
8页 161K
描述
Non-Volatile SRAM MODULE 1Mbit (128K x 8-Bit),34Pin-JLCC, 5V

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HMN1288J 数据手册

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HANBit  
HMN1288J  
Non-Volatile SRAM MODULE 1Mbit (128K x 8-Bit),34Pin-JLCC, 5V  
Part No. HMN1288J  
GENERAL DESCRIPTION  
The HMN1288J Nonvolatile SRAM is a 1,048,576-bit static RAM organized as 131,072 bytes by 8 bits.  
The HMN1288J has a self-contained lithium energy source provide reliable non-volatility coupled with the unlimited write  
cycles of standard SRAM and integral control circuitry which constantly monitors the single 5V supply for an out-of-  
tolerance condition. When such a condition occurs, the lithium energy source is automatically switched on to sustain the  
memory until after Vcc returns valid and write protection is unconditionally enabled to prevent garbled data. In addition the  
SRAM is unconditionally write-protected to prevent an inadvertent write operation. At this time the integral energy source is  
switched on to sustain the memory until after VCC returns valid.  
The HMN1288J uses extremely low standby current CMOS SRAM’s, coupled with small lithium coin cells to provide non-  
volatility without long write-cycle times and the write-cycle limitations associated with EEPROM.  
PIN ASSIGNMENT  
FEATURES  
w Access time : 55, 70 ns  
1
2
3
4
5
6
7
8
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
/NBW  
A(15)  
A(16)  
/RST  
VCC  
/WE  
/OE  
NC  
w High-density design : 4Mbit Design  
w Battery internally isolated until power is applied  
w Industry-standard 34-pin 128K x 8 pinout  
w Unlimited write cycles  
NC  
A(14)  
A(13)  
A(12)  
A(11)  
A(10)  
A(9)  
A(8)  
A(7)  
A(6)  
A(5)  
A(4)  
A(3)  
A(2)  
A(1)  
A(0)  
/CE  
w Data retention in the absence of VCC  
w 10-years minimum data retention in absence of power  
w Automatic write-protection during power-up/power-down  
cycles  
9
D(7)  
D(6)  
D(5)  
D(4)  
D(3)  
D(2)  
D(1)  
D(0)  
VSS  
10  
11  
12  
13  
14  
15  
16  
17  
w Data is automatically protected during power loss  
w Conventional SRAM operation; unlimited write cycles  
JLCC  
TOP VIEW  
OPTIONS  
w Timing  
55 ns  
MARKING  
-55  
-70  
70 ns  
URL: www.hbe.co.kr  
1
HANBit Electronics Co.,Ltd.  
Rev.0.0 (FEBRUARY/ 2002)  
12345678

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