DS1672 I²C、32位二进制计数RTC

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DS1672低电压计时芯片包含32位计数器和电源监视电路。32位计数器用作秒计数，通过软件算法可产生时间、星期、月、年信息。精准的温度补偿基准和比较器用来监视V_CC的状态。当电源电压超出容限时，电源失效信号可强制系统复位。当V_CC恢复到容限范围以内时，复位状态将继续保持250ms，以便电源和处理器达到稳定状态。

关键特性

32位计数器
I²C串口接口
自动电源失效检测及开关电路
电源失效复位输出
低电压振荡器运行(最低1.3V)
涓流充电能力
通过UL认证

Key Specifications: Timekeeping & Real-Time Clocks

Part Number

Functions

Time Format (hh = sec/100)

Date Format

Interface

Supply Voltage (V)

Time- keeping Current (typ) (nA)

C_L, Load Capacitance (pF)

Memory Type

Number of Time of Day Alarms

Features

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

DS1672

•	Elapsed Time Counter

Binary

I²C

2
3
3.3

425

None

•	Trickle Charger

Yes

PDIP/8
SOIC/8
uSOP/8

-40 to +85

$1.12 @ 1k

See All Timekeeping & Real-Time Clocks (86)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.