HomedatasheetDS1216D

DS1216D Datasheet

Memory - Controllers
Share:
Manufacturer

Description

The DS1216D SmartWatch RAM and SmartWatch ROM Sockets are 600mil-wide DIP sockets with a built-in CMOS watch function, an NV RAM controller circuit, and an embedded lithium energy source.The sockets provide an NV RAM solution for memory sized from 2k x 8 to 512k x 8 with package sizes from 26 pins to 32 pins. When a socket is mated with a CMOS SRAM, it provides a complete solution to problems associated with memory volatility and uses a common energy source to maintain time and date.The SmartWatch ROM sockets use the embedded lithium source to maintain the time and date only. A key feature of the SmartWatch is that the watch function remains transparent to the RAM. The SmartWatch monitors VCC for an out-of-tolerance condition. When such a condition occurs, an internal lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent loss of watch and RAM data.Using the SmartWatch saves PC board space since the combination of SmartWatch and the mated RAM take up no more area than the memory alone. The SmartWatch uses the VCC, data I/O 0, CE , OE , and WE for RAM and watch control. All other pins are passed straight through to the socket receptacle.The SmartWatch provides timekeeping information including hundredths of seconds, seconds, minutes,hours, days, date, months, and years. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including correction for leap years. The SmartWatch operates in either 24-hour or 12-hour format with an AM/PM indicator. DS1216D Features • Keeps track of hundredths of seconds,seconds, minutes, hours, days, date of the month, months, and years• Converts standard 2k x 8 up to 512k x 8 CMOS static RAMs into nonvolatile memory• Embedded lithium energy cell maintains watch information and retains RAM data• Watch function is transparent to RAM operation• Month and year determine the number of days in each month; leap-year compensation valid up to 2100• Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time• Proven gas-tight socket contacts• Full 10% operating range• Operating temperature range: 0C to +70C• Accuracy is better than 1 minute/month @ +25C
Features

Parameters

[{"Name":"Controller Type","Value":"Smartwatch RAM"},{"Name":"Voltage - Supply","Value":"4.5 V ~ 5.5 V"},{"Name":"Operating Temperature","Value":"0°C ~ 70°C"},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information

SEIKO INSTRUMENTS
Warm Hint

What HQEW.NET can offer here?
1. www.hqew.net/product-data provides numerous and various electronic part data-sheet and technology document here., if it can't be shown, Please feel free to ask us for it.
2. www.hqew.net/news provides the latest information of the semiconductor industry or the electronics industry for you.
3. www.hqew.net provides verified suppliers and numerous electronic components for your demand and business.
Any questions you can contact us by email cs@hqew.net.
Request for Datasheet

  • Part No     :
  • Your Email:
  • Content     :

related datasheet
  • K1200G datasheet - Sidac (79 V to 330 V)
  • N25Q032A41EF640E datasheet - Serial NOR Flash Memory 1.8V, Multiple I/O, 4KB Sector Erase
  • QL3060-4PF84C datasheet - Up to 60,000 Usable PLD Gate pASIC 3 FPGA Combining High Performance and High Density
  • 1N3040TR datasheet - 1 WATT METAL CASE ZENER DIODES
  • Q27.0-SMU7-23-30/30-BT datasheet - SMD Quartz Crystal
  • 1N2441R datasheet - Silicon Power Rectifier
  • 02DZ3.3-X datasheet - 02DZ2.0 Thru 02DZ24 / TOSHIBA Diode Silicon Epitaxial Planar Type
  • CM3102 datasheet - Micropower, 1.2V/150mA CMOS LDO Regulator with Power Good <br> ]The CM3102 is a low quiescent current (90�A) regulator that delivers up to 150mA of load current at a fixed 1.2V output. In addition, t
  • CLV1410E datasheet - Package Style = MINI-14S-L ;; Frequency (MHz) = 1390 to 1410 ;; N@10KHz (dBc/Hz) = -110 ;; Tuning Voltage (Vdc) = 0.50 to 4.50 ;; Tuning Sensitivity (MHz/V) = 22 ;; Power (dBm) = 2.00 &#0177; 2.00 ;;
  • CA3272A datasheet - Quad-gated Inverting Power Drivers With Fault Mode Diagnostic Flag Output
  • 2SA1825 datasheet - PNP Epitaxial Planar Silicon Transistor,50V/8A Switching Application
Browse Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9
Contact Us

+86-755-83536845

One to One Customer Service

17190417227