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HMNR328DV-85I 参数 Datasheet PDF下载

HMNR328DV-85I图片预览
型号: HMNR328DV-85I
PDF下载: 下载PDF文件 查看货源
内容描述: 5.0或3.3V , 256K位( 32千位×8 ) TIMEKEEPER NVSRAM [5.0 or 3.3V, 256K bit (32 Kbit x 8) TIMEKEEPER NVSRAM]
分类和应用: 静态存储器
文件页数/大小: 13 页 / 302 K
品牌: HANBIT [ HANBIT ELECTRONICS CO.,LTD ]
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HANBit
HMNR328D(V)
5.0 or 3.3V, 256K bit (32 Kbit x 8) TIMEKEEPER NVSRAM
Part No.
HMNR328D(V)
GENERAL DESCRIPTION
The HMNR328D(V) TIMEKEEPER SRAM is a 32Kb x 8 non-volatile static RAM and real time clock organized as 32,768
words by 8 bits. The special DIP package provides a fully integrated battery back-up memory and real time clock solu tion.
The HMNR328D(V) directly replaces industry standard 32Kbit 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)
HMNR328D : V
CC
= 4.5 to 5.5V
4.2V
V
PFD
4.5V
HMNR328DV: 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 32K x 8 SRAMS
SELF-CONTAINED BATTERY and CRYSTAL IN DIP PACKAGE
OPTIONS
w
Timing
70 ns
85 ns
100 ns
MARKING
-70
-85
-100
PIN ASSIGNMENT
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
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
/WE
A
13
A
8
A
9
A
11
/OE
A
10
/CE
DQ
7
DQ
6
DQ
5
DQ
4
DQ
3
28-pin Encapsulated Package
URL : www.hbe.co.kr
Rev. 0.0 (January, 2002)
1
HANBit Electronics Co.,Ltd.