參數(shù)資料
型號(hào)： DS1992L-F5
廠商： DALLAS SEMICONDUCTOR
元件分類： Memory IC:Other
英文描述： SPECIALTY MEMORY CIRCUIT, MRDB2
封裝： MICRO CAN
文件頁(yè)數(shù)： 23/23頁(yè)
文件大?。?/td> 537K
代理商： DS1992L-F5
DS1992/DS1993/DS1994
9 of 23
102199
Control Register
7
6
5
4
3
2
1
0
DSEL
STOP
START
AUTO
MAN.
OSC
RO
WPC
WPI
WPR
0201h
0
WPR
Write protect real-time clock/alarms registers
1
WPI
Write protect interval timer/alarms registers
2
WPC
Write protect cycle counter/alarms registers
Setting a write protect bit to a logic 1 will permanently write protect the corresponding counter and alarm
registers, all write protect bits, and additional bits in the control register. The write protect bits can not be
written in a normal manner (see “Write Protect/Programmable Expiration” section).
3
RO
Read only
If a programmable expiration occurs and the read only bit is set to a logic 1, then the DS1994 becomes
read only. If a programmable expiration occurs and the read only bit is a logic 0, then only the 64-bit
lasered ROM can be accessed (see “Write Protect/Programmable Expiration” section).
4
OSC
Oscillator enable
This bit controls the crystal oscillator. When set to a logic 1, the oscillator will start operation. When the
oscillator bit is a logic 0, the oscillator will stop.
5
AUTO/MAN
Automatic/Manual Mode
When this bit is set to a logic 1, the interval timer is in automatic mode. In this mode, the interval timer is
enabled by the data line. When this bit is set to a logic 0, the interval timer is in manual mode. In this
mode the interval timer is enabled by the STOP/START bit.
6
STOP/START
Stop/Start (in Manual Mode)
If the interval timer is in manual mode, the interval timer will start counting when this bit is set to a logic
0 and will stop counting when set to a logic 1. If the interval timer is in automatic mode, this bit has no
effect.
7
DSEL
Delay Select Bit
This bit selects the delay that it takes for the cycle counter and the interval timer (in auto mode) to see a
transition on the data line. When this bit is set to a logic 1, the delay time is 123
communication on the data line without starting or stopping the interval timer and without incrementing
the cycle counter. When this bit is set to a logic 0, the delay time is 3.5
±0.5 ms.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1992L-F5/E00 功能描述:iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1992L-F5+ 功能描述:iButton 1Kb/4Kb Memory iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1992LP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC
DS1992LR 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC
DS1992P 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC
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