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DS1644-150 PDF预览

DS1644-150

更新时间: 2024-11-19 14:27:59
品牌 Logo 应用领域
美信 - MAXIM 光电二极管
页数 文件大小 规格书
11页 375K
描述
Timer or RTC, Non-Volatile, CMOS, PDIP28

DS1644-150 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:MODULE针数:28
Reach Compliance Code:not_compliant风险等级:5.73
信息访问方法:PARALLEL中断能力:N
JESD-30 代码:R-PDIP-T28JESD-609代码:e0
端子数量:28最高工作温度:70 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装等效代码:DIP28,.6
封装形状:RECTANGULAR封装形式:IN-LINE
电源:5 V认证状态:Not Qualified
子类别:Timer or RTC标称供电电压:5 V
表面贴装:NO技术:CMOS
温度等级:COMMERCIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL最短时间:SECONDS
易失性:NOBase Number Matches:1

DS1644-150 数据手册

 浏览型号DS1644-150的Datasheet PDF文件第2页浏览型号DS1644-150的Datasheet PDF文件第3页浏览型号DS1644-150的Datasheet PDF文件第4页浏览型号DS1644-150的Datasheet PDF文件第5页浏览型号DS1644-150的Datasheet PDF文件第6页浏览型号DS1644-150的Datasheet PDF文件第7页 
DS1644/DS1644P  
Nonvolatile Timekeeping RAM  
www.dalsemi.com  
FEATURES  
PIN ASSIGNMENT  
§ Integrated NV SRAM, real time clock,  
crystal, power-fail control circuit and lithium  
energy source  
VCC  
WE  
A13  
A8  
A14  
1
28  
27  
A12  
2
3
4
26  
25  
A7  
A6  
A5  
A4  
§ Clock registers are accessed identically to the  
static RAM. These registers are resident in  
the eight top RAM locations.  
§ Totally nonvolatile with over 10 years of  
operation in the absence of power  
A9  
A11  
OE  
A10  
CE  
DQ7  
DQ6  
5
6
24  
23  
A3  
A2  
7
8
22  
21  
A1  
A0  
9
10  
20  
19  
§ Access time of 120 ns and 150 ns  
§ BCD coded year, month, date, day, hours,  
minutes, and seconds with leap year  
compensation valid up to 2100  
§ Power-fail write protection allows for ±10%  
VCC power supply tolerance  
DQ0  
11  
12  
18  
17  
DQ1  
DQ2  
GND  
DQ5  
DQ4  
DQ3  
13  
14  
16  
15  
28-PIN ENCAPSULATED PACKAGE  
(720-MIL EXTENDED)  
§ DS1644 only (DIP Module)  
-
Upward compatible with the DS1643  
Timekeeping RAM to achieve higher  
RAM density  
Standard JEDEC byte-wide 32K x 8  
static RAM pinout  
NC  
34  
33  
32  
31  
30  
NC  
NC  
1
2
3
NC  
A14  
A13  
A12  
A11  
NC  
PFO  
VCC  
WE  
4
5
6
7
8
9
29  
28  
27  
26  
25  
-
A10  
A9  
A8  
A7  
A6  
A5  
A4  
A3  
A2  
OE  
CE  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
§ DS1644P only (PowerCap Module Board)  
10  
24  
11  
-
Surface mountable package for direct  
connection to PowerCap containing  
battery and crystal  
Replaceable battery (PowerCap)  
Power-fail output  
23  
12  
22  
21  
20  
19  
18  
13  
14  
DQ2  
DQ1  
DQ0  
GND  
15 X1 GND  
X2  
VBAT  
A1  
16  
17  
A0  
-
-
34-PIN POWERCAP MODULE BOARD  
(USES DS9034PCX POWERCAP)  
- Pin-for-pin compatible with other  
densities of DS164XP Timekeeping  
RAM  
PIN DESCRIPTION  
A0-A14  
- Address Input  
- Chip Enable  
- Output Enable  
CE  
OE  
WE  
- Write Enable  
- +5 Volts  
VCC  
GND  
DQ0-DQ7  
NC  
- Ground  
- Data Input/Output  
- No Connection  
PFO  
- Power-fail Output  
(DS1644P only)  
X1, X2  
VBAT  
- Crystal Connection  
- Battery Connection  
1 of 11  
081099  

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