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DS1384FP

Dallas
Part Number DS1384FP
Manufacturer Dallas
Description Watchdog Timekeeping Controller
Published Mar 6, 2021
Detailed Description DS1384 Watchdog Timekeeping Controller www.maxim-ic.com FEATURES Keeps Track of Hundredths of Seconds, Seconds, Minute...
Datasheet PDF File DS1384FP PDF File

DS1384FP
DS1384FP

Overview
DS1384 Watchdog Timekeeping Controller www.
maxim-ic.
com FEATURES Keeps Track of Hundredths of Seconds, Seconds, Minutes, Hours, Days, Date of the Month, Months, and Years with Leap Year Compensation Valid Up to 2100 Watchdog Timer Restarts an Out-ofControl Processor Alarm Function Schedules Real-Time Related Activities Programmable Interrupts and SquareWave Outputs Bytewide RAM-Like Access 50 Bytes of On-Board User RAM Greater Than 10 Years Timekeeping and Data Retention in the Absence of Power with Small Lithium Coin Cells Supports Up to 128k x 8 of External Static RAM All Timekeeping Registers and On-Board RAM are Individually Addressable via the Address and Data Bus PIN CONFIGURATION TOP VIEW 44 1 INTB/(INTB) N.
C.
A14 A12 A7 A6 A5 A4 A3 A2 A1 11 12 DS1384 MQFP A0 DQ0 DQ1 DQ2 GND DQ3 DQ4 DQ5 DQ6 DQ7 CEO GND X1 X2 GND A16 INTA VCC VCCO SQW PF O VBAT2 34 33 23 22 A15 VBAT1 WE A13 A8 A9 A11 OE A10 CE OE ORDERING INFORMATION PART TEMP RANGE VOLTAGE (V) DS1384FP-12 0°C to +70°C 5.
0 DS1384FP-12+ 0°C to +70°C 5.
0 + Denotes lead-free/RoHS-compliant device.
* A “+” anywhere on the top mark indicates a lead-free/RoHS-compliant device.
PIN-PACKAGE 44 MQFP 44 MQFP TOP MARK* DS1384FP DS1384FP 1 of 17 REV: 112105 DS1384 DETAILED DESCRIPTION The DS1384 watchdog timekeeping controller is a self-contained real-time clock, alarm, watchdog timer, and interval timer that provides control of up to 128k x 8 of external low-power CMOS static RAM in a 44-pin quad flat-pack package.
An external crystal and battery are the only components required to maintain time of day and RAM memory contents in the absence of power.
Access to all RTC functions and the external RAM is the same as conventional bytewide SRAM.
Data is maintained in the watchdog timekeeper by intelligent control circuitry, which detects the status of VCC and write protects both memory and timekeeping functions when VCC is out of tolerance.
Timekeeper information includes hundredths of seconds, sec...


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