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HMNR5128DV-70I

Description
5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM
File Size274KB,13 Pages
ManufacturerHANBIT Electronics
Websitehttp://www.hbe.co.kr/
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HMNR5128DV-70I Overview

5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM

HANBit
HMNR5128D(V)
5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM
Part No. HMNR5128D(V)
GENERAL DESCRIPTION
The HMNR5128D(V) TIMEKEEPER SRAM is a 512Kb x 8 non-volatile static RAM and real time clock organized as
524,280 words by 8 bits. The special DIP package provides a fully integrated battery back-up memory and real time clock
solution. The HMNR5128D(V) directly replaces industry standard 512Kbit x 8 SRAMs. It also provides the non-volatility of
Flash without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed.
FEATURES
INTEGRATED LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT, BATTERY and
CRYSTAL
BCD CODED YEAR, MONTH, DAY, DATE, HOURS, MINUTES, and SECONDS
AUTOMATIC POWER-FAIL CHIP DESELECT and WRITE PROTECTION VOLTAGES :
(V
PFD
= Power-fail Deselect Voltage)
HMNR5128D : V
CC
= 4.5 to 5.5V
4.2V
V
PFD
4.5V
HMNR5128DV: V
CC
= 3.0 to 3.6V
2.7V
V
PFD
3.0V
CONVENTIONAL SRAM OPERATION : UNLIMITED WRITE CYCLES
SOFTWARE CONTROLLED CLOCK CALIBRATION FOR HIGH ACCURACY APPLICATIONS
10 YEARS OF DATA RETENTION and CLOCK OPERATION IN THE ABSENCE OF POWER PIN and FUNCTION
COMPATIBLE WITH INDUSTRY STANDARD 512K x 8 SRAMS
SELF-CONTAINED BATTERY and CRYSTAL IN DIP PACKAGE
OPTIONS
w
Timing
70 ns
85 ns
MARKING
-70
-85
PIN ASSIGNMENT
A
18
A
16
A
14
A
12
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
DQ
0
DQ
1
DQ
2
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V
CC
A
15
A
17
/WE
A
13
A
8
A
9
A
11
/OE
A
10
/CE
DQ
7
DQ
6
DQ
5
DQ
4
DQ
3
32-pin Encapsulated Package
URL : www.hbe.co.kr
Rev. 2.0 (March, 2002)
1
HANBit Electronics Co.,Ltd

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Description 5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM 5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM 5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM 5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM 5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM 5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM 5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM 5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM 5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM 5.0 or 3.3V, 4 Mbit (512 Kbit x 8) TIMEKEEPER NVSRAM
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