參數(shù)資料
型號(hào)： DS1511Y
廠商： DALLAS SEMICONDUCTOR
元件分類： Timer or RTC
英文描述： 1 TIMER(S), REAL TIME CLOCK, DMA28
封裝： MODULE, DIP-28
文件頁(yè)數(shù)： 12/30頁(yè)
文件大?。?/td> 291K
代理商： DS1511Y
DS1501/DS1511
2 of 30
PIN DESCRIPTION
VCC
- Supply Voltage
A0-A4
- Address Inputs
DQ0-DQ7
- Data I/O
CE
- Chip Enable Input
OE
- Output Enable Input
WE
- Write Enable Input
IRQ
- Interrupt Output (Open Drain)
PWR
- Power-On Output (Open Drain)
RST
- Reset Output (Open Drain)
KS
- Kickstart Input
SQW
- Square Wave Output
VBAT
- Backup Battery Supply
VBAUX
- Auxiliary Battery Supply
X1, X2
- 32.768 kHz Crystal Pins
GND
- Ground
NC
- No Connection
DESCRIPTION
The DS1501/DS1511 is a full function, year 2000-compliant, real-time clock/calendar (RTC) with a RTC
alarm, watchdog timer, power-on reset, battery monitors, 256 bytes nonvolatile static RAM, and a
32.768 kHz output. User access to all registers within the DS1501 is accomplished with a bytewide
interface as shown in Figure 1. The RTC registers contain century, year, month, date, day, hours,
minutes, and seconds data in 24-hour BCD format. Corrections for day of month and leap year are made
automatically.
The RTC registers are double buffered into an internal and external set. The user has direct access to the
external set. Clock/calendar updates to the external set of registers can be disabled and enabled to allow
the user to access static data. When the crystal oscillator is turned on, the internal set of registers are
continuously updated; this occurs regardless of external register settings to guarantee that accurate RTC
information is always maintained.
The DS1501/DS1511 contains its own power fail circuitry which automatically deselects the device when
the VCC supply falls below a power fail trip point. This feature provides a high degree of data security
during unpredictable system operation brought on by low VCC levels
The DS1501/DS1511 has interrupt ( IRQ), power control ( PWR ), and reset ( RST ) outputs which can be
used to control CPU activity. The IRQ interrupt or RST outputs can be invoked as the result of a time of
day alarm, CPU watchdog alarm, or a kick start signal. The DS1501/1511 power control circuitry allows
the system to be powered on via an external stimulus, such as a keyboard or by a time and date (wake-up)
alarm. The PWR output pin can be triggered by one or either of these events, and can be used to turn on
an external power supply. The PWR pin is under software control, so that when a task is complete, the
system power can then be shut down. The DS1501/DS1511 power-on reset can be used to detect a
system power down or failure and hold the CPU in a safe reset state until normal power returns and
stabilizes; the RST output is used for this function.
The DS1501 is a clock/calendar chip with the features described above. An external crystal and battery
are the only components required to maintain time-of-day and memory status in the absence of power.
相關(guān)PDF資料
PDF描述
DS1501YE 1 TIMER(S), REAL TIME CLOCK, PDSO28
DS1501WS 1 TIMER(S), REAL TIME CLOCK, PDSO28
DS1501Y 1 TIMER(S), REAL TIME CLOCK, PDIP28
DS1501W 1 TIMER(S), REAL TIME CLOCK, PDIP28
DS1501YS 1 TIMER(S), REAL TIME CLOCK, PDSO28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1511Y+ 功能描述:實(shí)時(shí)時(shí)鐘 Y2K-Compliant Watchdog 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
DS1514FR000 制造商:Thomas & Betts 功能描述:100A,REC,4P5W,MG,514,3PY600V,SC
DS1514MP000 制造商:Thomas & Betts 功能描述:100A,PLG,4P5W,MG,514,3PY347V.SC
DS1516FP000 制造商:Thomas & Betts 功能描述:100A,CON,4P5W,MG,516,3PY120V
DS1516FP00K 制造商:Thomas & Betts 功能描述:100A,CON,4P5W,MG,516,00K,3PY120V
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*