HMN12816D View Datasheet(PDF) - Unspecified
Part Name
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Manufacturer
HMN12816D Datasheet PDF : 9 Pages
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HANBit
HMN12816D
Non-Volatile SRAM MODULE 2Mbit (128K x 16-Bit), 40pin-Dip, 5V
Part No. HMN12816D
GENERAL DESCRIPTION
The HMN12816D 128K x 16 nonvolatile SRAM’s are 2,097,152-bit fully static, nonvolatile SRAM’s, organized as
131,072 words by 16 bits. Each NVSRAM has a self contained lithium energy source and control circuitry which
constantly monitors Vcc for an out-of-tolerance condition. When such a condition occurs, the lithium energy source is
automatically switched on and write protection is unconditionally enabled to prevent data corruption. DIP-package
HMN12816D devices can be used in place of solutions which build nonvolatile 128Kx16 memory by utilizing a
variety of discrete components. There is no limit on the number of write cycles that can be executed and no additional
support circuitry is required for microprocessor interfacing.
The HMN12816D 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 : 256KByte Design
w Battery internally isolated until power is applied
w Industry-standard 40-pin 128K x 16 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
/CEU 1
/CEL 2
DQ15 3
DQ14 4
DQ13 5
DQ12 6
DQ11 7
DQ10 8
DQ9 9
DQ8 10
Vss
11
DQ7 12
DQ6 13
DQ5 14
DQ4 15
DQ3 16
DQ2 17
DQ1 18
DQ0 19
/OE
20
40 Vcc
39 /WE
38 A16
37 A15
36 A14
35 A13
34 A12
33 A11
32 A10
31 A9
30 Vss
29 A8
28 A7
27 A6
26 A5
25 A4
24 A3
23 A2
22 A1
21 A0
40-pin Encapsulated Package
URL : www.hbe.co.kr
Rev. 0.0 (April, 2002)
1
HANBit Electronics Co.,Ltd
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