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參數(shù)資料
| 型號(hào)： | DS1500YN |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Timer or RTC |
| 英文描述： | REAL TIME CLOCK, PDIP32 |
| 封裝： | DIP-32 |
| 文件頁數(shù)： | 24/25頁 |
| 文件大?。?/td> | 214K |
| 代理商： | DS1500YN |
DS1500/DS1510
8 of 25
IRQ AND FLAG WAVEFORMS ( CS RELATED) Figure 2c
WAKE UP/KICKSTART
The DS1500/DS1510 incorporates a wake up feature, which can power on at a pre-determined date
through activation of the PWR output pin. In addition, the kickstart feature can allow the system to be
powered up in response to a low going transition on the KS pin, without operating voltage applied to the
VCCI pin. As a result, system power may be applied upon such events as key closure, or a modem ring
detects signal. In order to use either the wake up or the kickstart features, the DS1500/DS1510 must have
an auxiliary battery connected to the VBAUX pin and the oscillator must be running.
The wake up feature is controlled through the Time of Day/Date Power Enable bit TPE. Setting TPE to
"1" enables the wake up feature. Writing TPE to a "0" disables the wake up feature. Similarly, the
kickstart feature is controlled through the Kickstart Interrupt Enable bit KIE.
If the wake up feature is enabled, while the system is powered down (no VCCI voltage), the clock/calendar
will monitor the current day or date for a match condition with day/date alarm register (0 Bh).
In
conjunction with the day/date alarm register, the hours, minutes, and seconds alarm bytes in the clock
calendar register map (02h, 01h, and 00h) are also monitored. As a result, a wake up will occur at the day
or date and time specified by the day/date, hours minutes, and seconds alarm register values. This
additional alarm will occur regardless of the programming of the TIE bit. When the match condition
occurs, the PWR pin will automatically be driven low. This output can be used to turn on the main system
power supply, which provides VCCI voltage to the DS1500/DS1510 as well as the other major components
in the system. Also, at this time, the Time of Day/Date alarm Flag will be set, indicating that a wake up
condition has occurred.
If the kickstart feature is enabled with the KSE bit and VBAUX is present, while VCCI is low, the KS input
pin will be monitored for a low going transition of minimum pulse width tKSPW. When such a transition is
detected, the PWR line will be pulled low, as it is for a wake up condition. Also at this time, the Kickstart
Flag KSF will be set, indicating that a kickstart condition has occurred. The KS input pin is always
enabled and must not be allowed to float.
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| DS1501WSN | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
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| DS1501_09 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Y2K-Compliant Watchdog Real-Time Clocks |
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| DS1501-DS1511 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Y2K-Compliant Watchdog Real-Time Clocks |
| DS1501W | 功能描述:IC RTC WDOG Y2KC 3.3V 28-DIP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 實(shí)時(shí)時(shí)鐘 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:時(shí)鐘/日歷 特點(diǎn):警報(bào)器，閏年，SRAM 存儲(chǔ)容量:- 時(shí)間格式:HH:MM:SS（12/24 小時(shí)） 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源，電池:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件 |
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