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DS1245AB-120 参数 Datasheet PDF下载

DS1245AB-120图片预览
型号: DS1245AB-120
PDF下载: 下载PDF文件 查看货源
内容描述: 1024K非易失SRAM [1024k Nonvolatile SRAM]
分类和应用: 存储内存集成电路静态存储器光电二极管
文件页数/大小: 12 页 / 223 K
品牌: DALLAS [ DALLAS SEMICONDUCTOR ]
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DS1245Y/AB
1024k Nonvolatile SRAM
www.dalsemi.com
FEATURES
10 years minimum data retention in the
absence of external power
Data is automatically protected during power
loss
Replaces 128k x 8 volatile static RAM,
EEPROM or Flash memory
Unlimited write cycles
Low-power CMOS
Read and write access times as fast as 70 ns
Lithium energy source is electrically
disconnected to retain freshness until power is
applied for the first time
Full
±10%
V
CC
operating range (DS1245Y)
Optional
±5%
V
CC
operating range
(DS1245AB)
Optional industrial temperature range of
-40°C to +85°C, designated IND
JEDEC standard 32-pin DIP package
New PowerCap Module (PCM) package
- Directly surface-mountable module
- Replaceable snap-on PowerCap provides
lithium backup battery
- Standardized pinout for all nonvolatile
SRAM products
- Detachment feature on PowerCap allows
easy removal using a regular screwdriver
PIN ASSIGNMENT
NC
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
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
A15
NC
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
32-PIN ENCAPSULATED PACKAGE
740 MIL EXTENDED
NC
NC
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
NC
A15
A16
NC
V
CC
WE
OE
CE
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
GND V
BAT
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
34-PIN POWERCAP MODULE (PCM)
(USES DS9034PC POWERCAP)
PIN DESCRIPTION
A0 - A16
DQ0 - DQ7
CE
WE
OE
V
CC
GND
NC
1 of 12
- Address Inputs
- Data In/Data Out
- Chip Enable
- Write Enable
- Output Enable
- Power (+5V)
- Ground
- No Connect
111899