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CY14B256K-SP25XIT PDF预览

CY14B256K-SP25XIT

更新时间: 2024-09-15 06:51:31
品牌 Logo 应用领域
赛普拉斯 - CYPRESS 静态存储器时钟
页数 文件大小 规格书
28页 775K
描述
256 Kbit (32K x 8) nvSRAM with Real Time Clock

CY14B256K-SP25XIT 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:SSOP包装说明:ROHS COMPLIANT, SSOP-48
针数:48Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.82最大时钟频率:0.032 MHz
外部数据总线宽度:8信息访问方法:PARALLEL, DIRECT ADDRESS
JESD-30 代码:R-PDSO-G48JESD-609代码:e4
长度:15.875 mm湿度敏感等级:3
端子数量:48计时器数量:1
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, SHRINK PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:2.794 mm最大供电电压:3.6 V
最小供电电压:2.7 V标称供电电压:3 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式:GULL WING端子节距:0.635 mm
端子位置:DUAL处于峰值回流温度下的最长时间:20
宽度:7.51 mmuPs/uCs/外围集成电路类型:TIMER, REAL TIME CLOCK

CY14B256K-SP25XIT 数据手册

 浏览型号CY14B256K-SP25XIT的Datasheet PDF文件第2页浏览型号CY14B256K-SP25XIT的Datasheet PDF文件第3页浏览型号CY14B256K-SP25XIT的Datasheet PDF文件第4页浏览型号CY14B256K-SP25XIT的Datasheet PDF文件第5页浏览型号CY14B256K-SP25XIT的Datasheet PDF文件第6页浏览型号CY14B256K-SP25XIT的Datasheet PDF文件第7页 
CY14B256K  
256 Kbit (32K x 8) nvSRAM with Real Time Clock  
High reliability  
Endurance to 200K cycles  
Data retention: 20 years at 55°C  
Features  
25 ns, 35 ns, and 45 ns access times  
Pin compatible with STK17T88  
Single 3V operation with tolerance of +20%, -10%  
Data integrity of Cypress nvSRAM combined with full featured  
Real Time Clock  
Low power, 350 nA RTC current  
Commercial and industrial temperature  
48-Pin SSOP (ROHS compliant)  
Capacitor or battery backup for RTC  
Functional Description  
Watchdog timer  
The Cypress CY14B256K combines a 256 Kbit nonvolatile static  
RAM with a full-featured real time clock in a monolithic integrated  
circuit. The embedded nonvolatile elements incorporate  
QuantumTrap technology producing the world’s most reliable  
nonvolatile memory. The SRAM is read and written an infinite  
number of times, while independent, nonvolatile data resides in  
the nonvolatile elements.  
Clock alarm with programmable interrupts  
Hands off automatic STORE on power down with only a small  
capacitor  
STORE to QuantumTrap™ initiated by software, device pin, or  
on power down  
The real time clock function provides an accurate clock with leap  
year tracking and a programmable high accuracy oscillator. The  
alarm function is programmable for one time alarms or periodic  
seconds, minutes, hours, or days. There is also a programmable  
watchdog timer for process control.  
RECALL to SRAM initiated by software or on power up  
Infinite READ, WRITE, and RECALL cycles  
Logic Block Diagram  
V
CC  
V
CAP  
QuantumTrap  
512 X 512  
V
RTCbat  
POWER  
A5  
STORE  
CONTROL  
V
RTCcap  
A6  
A7  
A8  
RECALL  
STORE/  
RECALL  
CONTROL  
STATIC RAM  
ARRAY  
512 X 512  
HSB  
A9  
A11  
A12  
A13  
A14  
SOFTWARE  
DETECT  
A13  
A0  
-
DQ0  
COLUMN IO  
DQ1  
DQ2  
DQ3  
COLUMN DEC  
x1  
x2  
RTC  
MUX  
INT  
DQ4  
DQ5  
DQ6  
DQ7  
A0  
A4  
A10  
A1  
A3  
A2  
A14  
A0  
-
OE  
CE  
WE  
Cypress Semiconductor Corporation  
Document Number: 001-06431 Rev. *H  
198 Champion Court  
San Jose, CA 95134-1709  
408-943-2600  
Revised February 24, 2009  
[+] Feedback  

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