HMN1M8DVN 데이터 시트보기 (PDF) - Hanbit Electronics Co.,Ltd
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HMN1M8DVN Datasheet PDF : 9 Pages
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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 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 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 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
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
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