HMN1M8DVN Datasheet, PDF (1/9 Pages) Hanbit Electronics Co.,Ltd – Non-Volatile SRAM MODULE 8Mbit (1024k x 8bit) 40Pin - DIP, 3.3V

HANBit
HMN1M8DVN
Non-Volatile SRAM MODULE 8Mbit (1024k x 8bit) 40Pin – DIP, 3.3V
Part No. HMN1M8DVN
GENERAL DESCRIPTION
The HMN1M8DVN Nonvolatile SRAM is a 8,388,608-bit static RAM organized as 1,048,576 bytes by 8 bits.
The HMN1M8DVN 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 V_CC 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 V_CC returns valid.
The HMN1M8DVN 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 : 8Mbit Design
w Battery internally isolated until power is applied
w Industry-standard 40-pin 1,024K x 8 pinout
w Unlimited write cycles
w Data retention in the absence of V_CC
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
OPTIONS
w Timing
70 ns
85 ns
120 ns
150 ns
MARKING
- 70
- 85
-100
-150
PIN ASSIGNMENT
DU 1
NC
2
NC ³
A18
4
A16
5
A14
6
A12
7
A7
8
A6
9
A5
10
A4
11
A3
12
A2
13
A1
14
A0
15
DQ0
16
DQ1
17
DQ2
18
VSS
19
DU
20
40
DU
39
VCC
38
A19
37 NC
36
A15
35
A17
34
/WE
33
A13
32
A8
31
A9
30
A11
29
/OE
28
A10
27
/CE
26
DQ7
25
DQ6
24
DQ5
23
DQ4
22
DQ3
21
DU
40-pin Encapsulated Package
URL:www.hbe.co.kr
Rev.0.0 (January/ 2003)
1
HANBit Electronics Co.,Ltd