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DS1643P-100+

非易失随机存储器 (NVRAM), SRAM, 8 KB, 8K x 8位, 100 ns, PWRCP

MAXIM INTEGRATED PRODUCTS DS1643P-100+
MAXIM INTEGRATED PRODUCTS DS1643P-100+
MAXIM INTEGRATED PRODUCTS DS1643P-100+
MAXIM INTEGRATED PRODUCTS DS1643P-100+
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制造商产品编号:
DS1643P-100+
库存编号
2516482
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产品概述

The DS1643P-100+ is a non-volatile timekeeping RAM in 34 pin PWRCP (PowerCap) module package. This device is 8k x 8 static RAM with fully functional real time clock (RTC) which can be accessible in a bytewide format. It can be easily substituted in ROM and EEPROM sockets providing read/write non-volatility and the addition of the real time clock function. The RTC registers contain year, month, date, day, hours, minutes and seconds data in 24-hour BCD format. Corrections for the day of the month and leap year are made automatically. The RTC clock registers are double-buffered to avoid access of incorrect data that can occur during clock update cycles. DS1643 contains its own power-fail circuitry which deselects the device when the VCC supply is in an out of tolerance condition. This feature prevents loss of data from unpredictable system operation brought on by low VCC as errant access and update cycles are avoided.
  • Supply voltage range is 4.5V to 5.5V
  • Operating temperature range from 0°C to 70°C
  • Standard JEDEC bytewide 8k x 8 static RAM pin-out
  • Clock registers are accessed identically to the static RAM
  • Non-volatile with over 10 years of operation in the absence of power
  • Access time is 100ns
  • Power-fail write protection allows for ±10% VCC power supply tolerance
  • Lithium energy source is electrically disconnected until power is applied for first time
  • UL recognized

应用

嵌入式设计与开发

产品信息

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:
SRAM

:
8KB

:
8K x 8位

:
-

:
100ns

:
PWRCP

:
34引脚

:
4.5V

:
5.5V

:
0°C

:
70°C

:
-

:
MSL 3 - 168小时
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技术文档 (1)

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Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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