QuickView - DS1500 NV 제어를 갖춘 Y2K 규격 만족 워치독 RTC

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The DS1500 is a full-function, year 2000-compliant, real-time clock/calendar (RTC) with an alarm, watchdog timer, power-on reset, battery monitors, 256 bytes of on-board nonvolatile (NV) SRAM, NV control for backing up an external SRAM, and a 32.768kHz output. User access to all registers within the DS1500 is accomplished with a byte-wide interface as shown in Figure 7. The RTC registers contain century, year, month, date, day, hours, minutes, and seconds data in 24-hour binary-coded decimal (BCD) format. Corrections for day of month and leap year are made automatically.

주요기능

애플리케이션/용도

BCD-Coded Century, Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap-Year Compensation Valid Up to the Year 2100
Programmable Watchdog Timer and RTC Alarm
Century Register; Y2K-Compliant RTC
Automatic Battery Backup and Write Protection to External SRAM
+5V Operation
Precision Power-On Reset
Power-Control Circuitry Supports System Power-On from Date/Day/Time Alarm or Key Closure
256 Bytes User NV RAM
Auxiliary Battery Input
Accuracy Better than ±1 Minute/Month at +25°C
Day-of-Week/Date Alarm Register
Battery Voltage-Level Indicator Flags
Industrial Temperature Range: -40°C to +85°C
UL® (Underwriters Laboratories) 인증 획득

	배터리 지원 시스템
	가전 제품
	사무기기
	원격 시스템
	텔레콤 스위치

Key Specifications: Non-Volatile RAM Controllers

Part Number

CE Control

Smart-Socket with Internal Battery

Li Battery Monitor

Power Fail Output

Number of RAMs Controlled

RESET Output

Supply Voltage (V)

RoHS Available

Package

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

Operating Temp. Range (°C)

Price^**

DS1500

Yes

3.3
5

Yes

TSOP/32

168

-40 to +85

$4.72 @ 1k

See All Non-Volatile RAM Controllers (13)

Key Specifications: Timekeeping & Real-Time Clocks

Part Number

Functions

Date/ Time Format (hh = sec/100)

Interface

Supply Voltage (V)

C_L, Load Capacitance (pF)

Memory Type

Memory Size (Bytes)

Number of Time of Day Alarms

Price^**

DS1500

•	NV SRAM Control

•	Watchdog Timekeeper

YY-MM-DD/ HH:MM:SS

Bytewide

3.3
5

6
12.5

NV SRAM

256

$4.72 @ 1k

See All Timekeeping & Real-Time Clocks (85)

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.