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DS1345Y PDF预览

DS1345Y

更新时间: 2024-10-28 04:39:11
品牌 Logo 应用领域
美信 - MAXIM 电池存储内存集成电路静态存储器监控
页数 文件大小 规格书
12页 220K
描述
1024k Nonvolatile SRAM with Battery Monitor

DS1345Y 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Active包装说明:,
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.32.00.41风险等级:5.44
Is Samacsys:N最长访问时间:70 ns
其他特性:10 YEARS OF DATA RETENTION PERIODJESD-30 代码:R-XDMA-N34
JESD-609代码:e0内存密度:1048576 bit
内存集成电路类型:NON-VOLATILE SRAM MODULE内存宽度:8
功能数量:1端子数量:34
字数:131072 words字数代码:128000
工作模式:ASYNCHRONOUS最高工作温度:70 °C
最低工作温度:组织:128KX8
封装主体材料:UNSPECIFIED封装形状:RECTANGULAR
封装形式:MICROELECTRONIC ASSEMBLY并行/串行:PARALLEL
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V表面贴装:NO
技术:CMOS温度等级:COMMERCIAL
端子面层:TIN LEAD端子形式:NO LEAD
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
Base Number Matches:1

DS1345Y 数据手册

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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  
NC  
NC  
A14  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
BW  
ꢀꢁ Data is automatically protected during power  
loss  
ꢀꢁPower supply monitor resets processor when  
A15  
A16  
RST  
VCC  
WE  
OE  
CE  
A13  
A12  
A11  
A10  
A9  
VCC power loss occurs and holds processor in  
A8  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
DQ2  
DQ1  
DQ0  
GND  
reset during VCC ramp-up  
A7  
A6  
A5  
A4  
A3  
A2  
A1  
A0  
ꢀꢁBattery monitor checks remaining capacity  
daily  
GND VBAT  
ꢀꢁRead and write access times as fast as 70ns  
ꢀꢁUnlimited write cycle endurance  
ꢀꢁTypical standby current 50µA  
ꢀꢁUpgrade for 128k x 8 SRAM, EEPROM or  
Flash  
34-Pin PowerCap Module (PCM)  
(Uses DS9034PC 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  
WE  
- Write Enable  
- Output Enable  
- Reset Output  
OE  
RST  
BW  
VCC  
GND  
NC  
- Battery Warning Output  
- Power (+5V)  
- Ground  
-
-
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 12  
032904  

DS1345Y 替代型号

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