參數(shù)資料
型號(hào)： DS17285S-3
廠商： DALLAS SEMICONDUCTOR
元件分類： Timer or RTC
英文描述： 1 TIMER(S), REAL TIME CLOCK, PDSO24
封裝： SOIC-24
文件頁數(shù)： 37/38頁
文件大?。?/td> 415K
代理商： DS17285S-3
DS17285/DS17287
8 of 38
double-buffered. Once per second the 10 bytes are advanced by 1 second and checked for an alarm
condition. If a read of the time and calendar data occurs during an update, a problem exists where
seconds, minutes, hours, etc. may not correlate. The probability of reading incorrect time and calendar
data is low. Several methods of avoiding any possible incorrect time and calendar reads are covered later
in this text.
The three time alarm bytes can be used in two ways. First, when the alarm time is written in the
appropriate hours, minutes, and seconds alarm locations, the alarm interrupt is initiated at the specified
time each day if the alarm enable bit is high. The second use condition is to insert a “don’t care” state in
one or more of the three time alarm bytes. The “don’t care” code is any hexadecimal value from C0 to
FF. The two most significant bits of each byte set the “don’t care” condition when at logic 1. An alarm
will be generated each hour when the “don’t care” bits are set in the hours byte. Similarly, an alarm is
generated every minute with “don’t care” codes in the hours and minute alarm bytes. The “don’t care”
codes in all three time alarm bytes create an interrupt every second. The three time alarm bytes may be
used in conjunction with the date alarm as described in the Wake-up/Kickstart section. The century
counter will be discussed later in this text.
TIME, CALENDAR AND ALARM DATA MODES Table 1
RANGE
ADDRESS
LOCATION
FUNCTION
DECIMAL
RANGE
BINARY DATA
MODE
BCD DATA MODE
OOH
Seconds
0-59
00-3B
00-59
01H
Seconds Alarm
0-59
00-3B
00-59
02H
Minutes
0-59
00-3B
00-59
03H
Minutes Alarm
0-59
00-3B
00-59
Hours 12-hr, Mode
1-12
01-0C AM, 81-8C PM 01-12 AM, 81-92 PM
04H
Hours 24-hr, Mode
0-23
00-17
00-23
Hours Alarm 12-hr,
Mode
1-12
01-0C AM, 81-8C PM 01-12 AM, 81-92 PM
05H
Hours Alarm 24-hr,
Mode
0-23
00-17
00-23
06H
Day of the week
Sunday=1
1-7
01-07
07H
Date of Month
1-31
01-1F
01-31
08H
Month
1-12
01-0C
01-12
09H
Year
0-99
00-63
00-99
BANK 1, 48H Century
0-99
00-63
00-99
BANK 1, 49H Date Alarm
1-31
01-1F
01-31
相關(guān)PDF資料
PDF描述
DS1742-100 0 TIMER(S), REAL TIME CLOCK, PDIP24
DS1742W-120 0 TIMER(S), REAL TIME CLOCK, PDIP24
DS1742-70 0 TIMER(S), REAL TIME CLOCK, PDIP24
DS1742W-150 0 TIMER(S), REAL TIME CLOCK, DMA24
DS1743P-70 0 TIMER(S), REAL TIME CLOCK, DMA34
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS17285S-3/T&R 制造商:Maxim Integrated Products 功能描述:IC RTC 3V 2K NV RAM 24-SOIC 制造商:Maxim Integrated Products 功能描述:Real Time Clock 3V/5V RTC K Multiplexed Kick-S
DS17285S-3/T&R 功能描述:實(shí)時(shí)時(shí)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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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-3+ 功能描述:實(shí)時(shí)時(shí)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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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-3+T&R 制造商:Maxim Integrated Products 功能描述: 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:IC RTC 3V 2K NV RAM 24-SOIC 制造商:Maxim Integrated Products 功能描述:Real Time Clock 3V/5V RTC K Multiplexed Kick-S
DS17285S-3+T&R 功能描述:實(shí)時(shí)時(shí)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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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
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