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DS1685-5IND_12 PDF预览

DS1685-5IND_12

更新时间: 2024-01-20 09:14:54
品牌 Logo 应用领域
美信 - MAXIM 时钟
页数 文件大小 规格书
34页 654K
描述
3V/5V Real-Time Clocks

DS1685-5IND_12 数据手册

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DS1685/DS1687  
3V/5V Real-Time Clocks  
FEATURES  
.
Incorporates Industry-Standard DS1287 PC  
.
.
.
.
.
Auxiliary Battery Input  
RAM Clear Input  
Century Register  
Date Alarm Register  
Compatible with Existing BIOS for Original  
DS1287 Functions  
Available as Chip (DS1685) or Stand-Alone  
Encapsulated DIP (EDIP) with Embedded  
Battery and Crystal (DS1687)  
Timekeeping Algorithm Includes Leap-Year  
Compensation Valid Through 2099  
Clock plus Enhanced Features Such as Y2K  
Compliant  
.
.
.
+3V or +5V Operation  
64-Bit Silicon Serial Number  
Power-Control Circuitry Supports System  
Power-On from Date/Time Alarm or Key  
Closure  
.
.
.
32kHz Output for Power Management  
Crystal-Select Bit Allows RTC to Operate with  
6pF or 12.5pF Crystal  
.
.
.
.
SMI Recovery Stack  
242 Bytes Battery-Backed NV RAM  
Underwriters Laboratory (UL) Recognized  
APPLICATIONS  
Embedded Systems  
Utility Meters  
Security Systems  
Network Hubs, Bridges, and Routers  
PIN CONFIGURATIONS  
TOP VIEW  
VCC  
1
2
PWR  
X1  
24  
23  
VCC  
1
2
PWR  
N.C.  
N.C.  
AD0  
24  
23  
SQW  
VBAUX  
SQW  
VBAUX  
DS1685/  
DS1685S/  
DS1685E  
DS1687  
X2  
3
4
5
22  
21  
20  
3
4
5
22  
21  
20  
AD0  
RCLR  
VBAT  
IRQ  
KS  
RCLR  
N.C.  
IRQ  
KS  
4
3
2
1
28 27 26  
5
25  
RCLR  
AD0  
AD1  
AD2  
AD3  
AD4  
AD5  
N.C.  
AD1  
AD2  
AD3  
AD4  
AD5  
AD6  
AD7  
GND  
6
24  
23  
VBAT  
AD1  
AD2  
AD3  
AD4  
AD5  
AD6  
AD7  
GND  
DS1685Q  
7
IRQ  
KS  
6
19  
18  
17  
16  
15  
6
22  
21  
20  
19  
8
19  
18  
17  
16  
15  
9
RD  
7
7
10  
11  
GND  
WR  
RD  
8
RD  
8
12 13 14 15 16 17 18  
9
GND  
9
N.C.  
10  
11  
12  
WR  
10  
11  
12  
WR  
PLCC  
ALE  
14  
13  
ALE  
14  
13  
CS  
CS  
PDIP (0.600)/  
SO (0.300)/  
TSSOP (0.173)  
EDIP (0.740)  
19-5215; Rev 10/12  
1 of 34  

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