4Kb Plus Time Memory iButton®

iButton DESCRIPTION The DS1994 Memory iButton is a rugged read/write data carrier that acts as a localized database, easily accessible with minimal hardware. The nonvolatile memory and optional timekeeping capability offer a simple solution to storing and retrieving vital information pertaining t

文件：634.21 Kbytes 页数：23 Pages

MAXIM

美信

4kb Plus Time Memory iButton

iButton DESCRIPTION The DS1994 Memory iButton is a rugged read/write data carrier that acts as a localized database, easily accessible with minimal hardware. The nonvolatile memory and optional timekeeping capability offer a simple solution to storing and retrieving vital information pertaining t

文件：254.71 Kbytes 页数：22 Pages

DALLAS

iButton 4K位、带有时钟的存储器

iButton® 4Kb、带有时钟的存储器(DS1994)是一款坚固耐用的读/写数据载体，可用作本地数据库，仅需极少的硬件即可访问。非易失存储器和可选的计时功能提供一种存储和获取已安装iButton器件中重要信息的方案。数据可通过1-Wire®协议串行传输，仅需要单根数据线和返回地线。\n 暂存器是辅助的存储页，充当写入存储器时的缓冲器。数据首先被存入暂存器，并可从这里读回。在数据经过验证后，复制暂存器命令将数据写入存储器，这个过程保证了修改存储器时数据的完整性。每个DS1994芯片具有工厂激光刻度的48位序列号，提供唯一的身份识别，以保证产品的绝对可溯性。坚固耐用的MicroCan具有优异的 \n• 4096位读/写非易失性存储器 \n• 256位暂存器保证数据传输的完整性 \n• 存储器分成256位页面，便于数据打包 \n• 严格的读/写协议保证了数据的完整性 \n• 内置二进制格式的实时时钟/日历 \n• 上电后时间间隔计时器可自动累加时间 \n• 可编程周期计数器累计系统电源开/关的次数 \n• 可编程闹钟可设置为间隔计时器、实时时钟或周期计数器产生中断 \n• 写保护功能防止时间数据错误修改 \n• 可编程终止日期限制访问SRAM和计时器 \n• 25°C时，时钟精度优于±2分钟/月 \n• 工作温度范围-40°C至+70°C \n• 数据保存超过10年;

ADI

亚德诺

4kb Plus Time Memory iButton

iButton DESCRIPTION The DS1994 Memory iButton is a rugged read/write data carrier that acts as a localized database, easily accessible with minimal hardware. The nonvolatile memory and optional timekeeping capability offer a simple solution to storing and retrieving vital information pertaining t

文件：254.71 Kbytes 页数：22 Pages

DALLAS

1kbit/4kbit Memory iButtonTM DS1994 4-kbit Plus Time Memory iButtonTM

iButton DESCRIPTION The DS1992/DS1993 memory iButtons (hereafter referred to as DS199_) are rugged read/write data carriers that act as a localized database, easily accessible with minimal hardware. The nonvolatile memory and optional timekeeping capability offer a simple solution to storing and

文件：537.37 Kbytes 页数：17 Pages

DALLAS

4Kb Plus Time Memory iButton®

iButton DESCRIPTION The DS1994 Memory iButton is a rugged read/write data carrier that acts as a localized database, easily accessible with minimal hardware. The nonvolatile memory and optional timekeeping capability offer a simple solution to storing and retrieving vital information pertaining t

文件：634.21 Kbytes 页数：23 Pages

MAXIM

美信