HMN2M8D Datasheet, PDF (1/9 Pages) Hanbit Electronics Co.,Ltd – Non-Volatile SRAM MODULE 16Mbit (2,048K x 8-Bit), 36Pin-DIP, 5V

HANBit
HMN2M8D
Non-Volatile SRAM MODULE 16Mbit (2,048K x 8-Bit), 36Pin-DIP, 5V
Part No. HMN2M8D
GENERAL DESCRIPTION
The HMN2M8D Nonvolatile SRAM is a 16,777,216-bit static RAM organized as 2,097,152 bytes by 8 bits.
The HMN2M8D 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 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 HMN2M8D 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, 150ns
w High-density design : 16Mbit Design
w Battery internally isolated until power is applied
w Industry-standard 36-pin 2,048K x 8 pinout
w Unlimited write cycles
w Data retention in the absence of V_CC
w 5-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 Industrial temperature operation
w Timing
70 ns
- 70
85 ns
- 85
120 ns
-100
150 ns
-150
PIN ASSIGNMENT
NC ¹
A20
2
A18
3
A16
4
A14
5
A12
6
A7
7
A6
8
A5
9
A4 ¹⁰
A3 ¹¹
A2 12
A1 ¹³
A0 14
DQ0 15
DQ1 16
DQ2 17
VSS
18
36
VCC
35
A19
34 NC
33
A15
32
A17
31 /WE
30
A13
29
A8
28
A9
27
A11
26 /OE
25
A10
24 /CE
23
DQ7
22
DQ6
21
DQ5
20
DQ4
19
DQ3
36-pin Encapsulated Package
URL : www.hbe.co.kr
Rev. 1.0 (May, 2002)
1
HANBit Electronics Co.,Ltd