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DS1677E PDF预览

DS1677E

更新时间: 2024-11-15 22:50:47
品牌 Logo 应用领域
达拉斯 - DALLAS 计时器或实时时钟微控制器和处理器外围集成电路光电二极管
页数 文件大小 规格书
17页 163K
描述
Portable System Controller

DS1677E 技术参数

是否Rohs认证:不符合生命周期:Transferred
包装说明:TSSOP-20Reach Compliance Code:unknown
风险等级:5.82Is Samacsys:N
其他特性:3-CHANNEL ADC最大时钟频率:0.032 MHz
外部数据总线宽度:1信息访问方法:SERIAL, 3-WIRE
中断能力:YJESD-30 代码:R-PDSO-G20
JESD-609代码:e0端子数量:20
计时器数量: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:TSSOP封装等效代码:TSSOP20,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
电源:5 V认证状态:Not Qualified
子类别:Timer or RTC最大供电电压:5.5 V
最小供电电压:4.5 V标称供电电压:5 V
表面贴装:YES技术:CMOS
温度等级:COMMERCIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:0.635 mm
端子位置:DUAL最短时间:SECONDS
易失性:YESuPs/uCs/外围集成电路类型:TIMER, REAL TIME CLOCK
Base Number Matches:1

DS1677E 数据手册

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DS1677  
Portable System Controller  
www.dalsemi.com  
FEATURES  
Provides Real Time Clock:  
PIN ASSIGNMENT  
-
Counts seconds, minutes, hours, date of  
the month, month, day of the week, and  
year with leap year compensation valid up  
to 2100  
Power control circuitry supports system  
power on from day/time alarm  
VBAT  
VCCO  
SCLK  
I/O  
1
2
3
4
5
20  
19  
18  
17  
16  
ST  
VCC  
X1  
-
X2  
CS  
AIN0  
Microprocessor monitor:  
CEI  
CEO  
NC  
6
15  
14  
13  
12  
11  
AIN1  
AIN2  
RST  
PFI  
-
-
Halts microprocessor during power–fail  
Automatically restarts microprocessor  
after power failure  
7
8
-
-
Monitors push–button for external  
override  
Halts and resets an out of control  
microprocessor  
INT  
9
GND  
10  
PFO  
20-Pin TSSOP  
=NV RAM control:  
Automatic battery backup and write  
protection to external SRAM  
-
3–channel, 8–bit analog–to–digital converter  
Simple 3–wire interface  
+5.0V operation  
=1.25V threshold detector for power–fail  
warning  
ORDERING INFORMATION  
DS1677E 20–Pin TSSOP  
DESCRIPTION  
The Portable System Controller is a circuit which incorporates many of the functions necessary for low  
power portable products integrated into one chip. The DS1677 provides a Real Time Clock, NV RAM  
controller, micro-processor monitor, power–fail warning, and a 3–channel, 8–bit analog–to–digital  
converter. Communication with the DS1677 is established through a simple 3–wire interface.  
The Real Time Clock (RTC) provides seconds, minutes, hours, day, date, month, and year information  
with leap year compensation. The RTC also provides an alarm interrupt. This interrupt works when the  
DS1677 is powered by the system power supply or when in battery backup operation so the alarm can be  
used to wake up a system that is powered down.  
1 of 17  
050200  

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