- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄97863 > DS17285S-5 (DALLAS SEMICONDUCTOR) 1 TIMER(S), REAL TIME CLOCK, PDSO24 PDF資料下載
參數(shù)資料
| 型號： | DS17285S-5 |
| 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)： | 3/38頁 |
| 文件大?。?/td> | 415K |
| 代理商： | DS17285S-5 |
第1頁第2頁當前第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁
DS17285/DS17287
11 of 38
REGISTER C
MSB
LSB
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
IRQF
PF
AF
UF
0
IRQF - The Interrupt Request Flag (IRQF) bit is set to a 1 when one or more of the following are true:
PF = PIE = 1
WF = WIE= 1
AF = AIE = 1
KF = KSE= 1
UF = UIE = 1
RF = RIE = 1
i.e., IRQF = (PF ● PIE) + (AF ● AIE) + (UF ● UIE) + (WF ● WIE) + (KF ● KSE) + (RF ● RIE)
Any time the IRQF bit is a 1, the IRQ pin is driven low. Flag bits PF, AF, and UF are cleared after
Register C is read by the program.
PF - The Periodic Interrupt Flag (PF) is a read-only bit which is set to a 1 when an edge is detected on the
selected tap of the divider chain. The RS3 through RS0 bits establish the periodic rate. PF is set to a
1 independent of the state of the PIE bit. When both PF and PIE are 1’s, the IRQ signal is active and will
set the IRQF bit. The PF bit is cleared by a software read of Register C.
AF - A 1 in the Alarm Interrupt Flag (AF) bit indicates that the current time has matched the alarm time.
If the AIE bit is also a 1, the IRQ pin will go low and a 1 will appear in the IRQF bit. A read of Register
C will clear AF.
UF - The Update Ended Interrupt Flag (UF) bit is set after each update cycle. When the UIE bit is set to
1, the 1 in UF causes the IRQF bit to be a 1, which will assert the IRQ pin. UF is cleared by reading
Register C.
BIT 3 THROUGH BIT 0 - These are unused bits of the status Register C. These bits always read 0 and
cannot be written.
REGISTER D
MSB
LSB
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
VRT
0
0000
00
VRT - The Valid RAM and Time (VRT) bit indicates the condition of the battery connected to the VBAT
pin or the battery connected to VBAUX, whichever is at a higher voltage. This bit is not writeable and
should always be a 1 when read. If a 0 is ever present, an exhausted lithium energy source is indicated
and both the contents of the RTC data and RAM data are questionable.
BIT 6 THROUGH BIT 0 - The remaining bits of Register D are not usable. They cannot be written and,
when read, they will always read 0.
相關PDF資料 |
PDF描述 |
|---|---|
| DS17285SN-5 | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
| DS17285EN-3 | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| DS17285S-3 | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
| DS1742-100 | 0 TIMER(S), REAL TIME CLOCK, PDIP24 |
| DS1742W-120 | 0 TIMER(S), REAL TIME CLOCK, PDIP24 |
相關代理商/技術參數(shù) |
參數(shù)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 |
| DS17285S-5+T&R | 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復。