HMN1288DV Datasheet, PDF (1/9 Pages) Hanbit Electronics Co.,Ltd – Non-Volatile SRAM Module 1Mbit (128K x 8-Bit), 32Pin-DIP, 3.3V

HANBit
HMN1288DV
Non-Volatile SRAM Module 1Mbit (128K x 8-Bit), 32Pin-DIP, 3.3V
Part No. HMN1288DV
GENERAL DESCRIPTION
The HMN1288DV Nonvolatile SRAM is a 1,048,576-bit static RAM organized as 131,072 bytes by 8 bits.
The HMN1288DV 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 3.3V, 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 HMN1288DV 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.
FEATURES
w Access time : 70, 85, 120, 150 ns
w High-density design : 1Mbit Design
w Battery internally isolated until power is applied
w Industry-standard 32-pin 128K x 8 pinout
w Unlimited write cycles
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
w Data is automatically protected during power loss
w Conventional SRAM operation; unlimited write cycles
OPTIONS
w Timing
70 ns
85 ns
120 ns
150 ns
MARKING
- 70
- 85
-120
-150
PIN ASSIGNMENT
NC ¹
A16
2
A14
3
A12
4
A7
5
A6
6
A5
7
A4
8
A3
9
A2
10
A1
11
A0
12
DQ0
13
DQ1
14
DQ2
15
VSS
16
32
VCC
31
A15
30 _NC
29
/WE
28
A13
27
A8
26
A9
25
A11
24 _/OE
23
A10
22 _/CE
21
DQ7
20
DQ6
19
DQ5
18
DQ4
17
DQ3
32-pin Encapsulated Package
URL : www.hbe.co.kr
1
Rev. 1.0 (June, 2004)
FinePrint pdfFactory 평 가 판 으 로 만 든 PDFhttp://www.softvision.co.kr
HANBit Electronics Co.,Ltd