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DS1345Y PDF预览

DS1345Y

更新时间: 2024-10-29 14:57:59
品牌 Logo 应用领域
亚德诺 - ADI 电池静态存储器
页数 文件大小 规格书
10页 202K
描述
1024k非易失SRAM,带有电池监测器

DS1345Y 数据手册

 浏览型号DS1345Y的Datasheet PDF文件第2页浏览型号DS1345Y的Datasheet PDF文件第3页浏览型号DS1345Y的Datasheet PDF文件第4页浏览型号DS1345Y的Datasheet PDF文件第5页浏览型号DS1345Y的Datasheet PDF文件第6页浏览型号DS1345Y的Datasheet PDF文件第7页 
19-5589; Rev 10/10  
DS1345Y/AB  
1024k Nonvolatile SRAM  
with Battery Monitor  
www.maxim-ic.com  
FEATURES  
PIN ASSIGNMENT  
. 10 years minimum data retention in the  
absence of external power  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
NC  
NC  
A14  
1
2
3
4
5
6
7
8
9
BW  
.
Data is automatically protected during power  
loss  
A15  
A16  
RST  
VCC  
A13  
A12  
A11  
A10  
A9  
. Power supply monitor resets processor when  
CC power loss occurs and holds processor in  
WE  
OE  
V
CE  
A8  
DQ7  
reset during VCC ramp-up  
A7  
A6  
A5  
A4  
A3  
A2  
A1  
A0  
10  
11  
12  
13  
14  
15  
DQ6  
DQ5  
DQ4  
DQ3  
DQ2  
DQ1  
DQ0  
GND  
. Battery monitor checks remaining capacity  
daily  
GND VBAT  
. Read and write access times of 70ns  
. Unlimited write cycle endurance  
. Typical standby current 50µA  
. Upgrade for 128k x 8 SRAM, EEPROM or  
Flash  
16  
17  
34-Pin PowerCap Module (PCM)  
(Uses DS9034PC+ or DS9034PCI+ PowerCap)  
. Lithium battery is electrically disconnected to  
retain freshness until power is applied for the  
first time  
. Full ±10% VCC operating range (DS1345Y)  
or optional ±5% VCC operating range  
(DS1345AB)  
. Optional industrial temperature range of  
-40°C to +85°C, designated IND  
. PowerCap Module (PCM) package  
PIN DESCRIPTION  
A0 – A16  
DQ0 – DQ7  
CE  
- Address Inputs  
- Data In/Data Out  
- Chip Enable  
- Write Enable  
- Output Enable  
- Reset Output  
- Battery Warning Output  
- Power (+5V)  
- Ground  
WE  
OE  
RST  
BW  
VCC  
GND  
NC  
-
-
Directly surface-mountable module  
Replaceable snap-on PowerCap provides  
lithium backup battery  
- No Connect  
-
-
Standardized pinout for all nonvolatile  
(NV) SRAM products  
Detachment feature on PowerCap allows  
easy removal using a regular screwdriver  
DESCRIPTION  
The DS1345 1024k NV SRAMs are 1,048,576-bit, fully static, NV SRAMs organized as 131,072 words  
by 8 bits. Each NV SRAM 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. Additionally, the DS1345 devices have dedicated circuitry for monitoring the status of  
VCC and the status of the internal lithium battery. DS1345 devices in the PowerCap module package are  
directly surface mountable and are normally paired with a DS9034PC PowerCap to form a complete NV  
SRAM module. The devices can be used in place of 128k x 8 SRAM, EEPROM, or Flash components.  
1 of 10  

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