參數(shù)資料
型號： DS17285S-3+T&R
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： XO, clock
英文描述： 3V/5V Real-Time Clock
中文描述： 1 TIMER(S), REAL TIME CLOCK, PDSO24
封裝： SO-24
文件頁數(shù)： 14/38頁
文件大?。?/td> 411K
代理商： DS17285S-3+T&R
DS17285/DS17287
21 of 38
EXTENDED CONTROL REGISTERS
Two extended control registers are provided to supply controls and status information for the extended
features offered by the DS17285/DS17287. These are designated as extended control registers 4A and 4B
and are located in register bank 1, locations 04AH and 04BH, respectively. The functions of the bits
within these registers are described as follows.
EXTENDED CONTROL REGISTER 4A
MSB
LSB
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
VRT2
INCR
BME
*
PAB
RF
WF
KF
VRT2 – Valid RAM and Time 2. This status bit gives the condition of the auxiliary batter. It is set to a
logic 1 condition when the external lithium battery is connected to the VBAUX. If this bit is read as a logivc
0, the external battery should be replaced.
INCR – Increment in Progress Status. This bit is set to a 1 when an increment to the time/date registers
is in progress and the alarm checks are being made. INCR is set to a 1 at 122s before the update cycle
starts and is cleared to 0 at the end of each update cycle.
BME – Burst Mode Enable. The burst mode enable bit allows the extended user RAM address registers
to automatically increment for consecutive reads and writes. When BME is set to a logic 1, the automatic
incrementing is enabled and when BME is set to a logic 0, the automatic incrementing is disabled.
PAB – Power-Active Bar-Control. When this bit is 0, the PWR pin is in the active low state. When this
bit is 1, the PWR pin is in the high-impedance state. This bit can be written to a logic 1 or 0 by the user. If
either WF and WIE = 1 or KF and KSE = 1, the PAB bit is cleared to 0.
RF – Ram Clear Flag. This bit is set to a logic 1 when a high-to-low transition occurs on the RCLR
input if RCE = 1. The RF bit is cleared by writing it to a logic 0. This bit can also be written to a logic 1
to force an interrupt condition.
WF – Wake-Up Alarm Flag. This bit is set to 1 when a wake-up alarm condition occurs or when the
user writes it to a 1. WF is cleared by writing it to a 0.
KF – Kickstart Flag. This bit is set to a 1 when a kickstart condition occurs or when the user writes it to
a 1. This bit is cleared by writing it to a logic 0.
*Reserved bits. These bits are reserved for future use by Dallas Semiconductor. They can be read and
written, but have no affect on operation.
相關(guān)PDF資料
PDF描述
DS17285S-5+T&R 3V/5V Real-Time Clock
DS1743P-85IND+ Y2K-Compliant, Nonvolatile Timekeeping RAMs
DS1743P-C01+ Y2K-Compliant, Nonvolatile Timekeeping RAMs
DS1744-70+ Y2K-Compliant, Nonvolatile Timekeeping RAMs
DS1744-70IND+ Y2K-Compliant, Nonvolatile Timekeeping RAMs
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS17285S-5 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
DS17285S-5/T&R 制造商:Maxim Integrated Products 功能描述:IC RTC 5V 2K NV RAM 24-SOIC
DS17285S-5/T&R 功能描述:實時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
DS17285S-5+ 功能描述:實時時鐘 3V/5V RTC K Multiplexed Kick-S RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
DS17285S-5+T&R 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK MULTIPLEXED 2KBYTE 24SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:Maxim Integrated DS17285S-5+T&R Real Time Clocks (RTC) 制造商:Maxim Integrated Products 功能描述:IC RTC 5V 2K NV RAM 24-SOIC
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