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參數(shù)資料
| 型號： | 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)： | 4/25頁 |
| 文件大小： | 214K |
| 代理商： | DS1500YN |
DS1500/DS1510
12 of 25
Note: Unless otherwise specified, the state of the control/RTC/SRAM bits in the DS1500/DS1510 is not
defined upon initial power application; the DS1500/DS1510 should be properly configured/defined
during initial configuration.
CONTROL REGISTERS
The controls and status information for the features offered by the DS1500/DS1510 are maintained in the
following register bits.
EOSC
- Oscillator Start/Stop Bit (05H bit 7)
This bit is used to turn the oscillator on and off.
"1" - oscillator off
"0" - oscillator on
E32K
- Enable 32.768 kHz Output (05H bit 6)
This bit, when written to a "0", will enable the 32.768 kHz oscillator frequency to be output on the SQW
pin if the oscillator is running.
BB32 - Battery Backup 32 kHz Enable Bit (05H bit 5)
When the BB32 bit is written to a "1", it will enable a 32 kHz signal to be output on the SQW pin while
the part is in battery backup mode if voltage is applied to VBAUX.
AM1-AM4 - Alarm Mask Bits (08H bit 7; 09H bit 7; 0 AH bit 7; 0 BH bit 7)
Bit 7 of registers 08h to 0Bh contains an alarm mask bit: AM1 to AM4. These bits, in conjunction with
the TIE described later, allow the IRQ output to be activated for a matched alarm condition.
The alarm can be programmed to activate on a specific day of the month, day of the week, or repeat every
day, hour, minute, or second. Table 2 shows the possible settings for AM1 - AM4 and the resulting alarm
rates. Configurations not listed in the table default to the once per second mode to notify the user of an
incorrect alarm setting.
DY/DT - Day/Date Bit (0 BH bit 6)
The DY/DT bit controls whether the alarm value stored in bits 0 to 5 of 0 BH reflects the day of the week
or the date of the month. If DY/DT is written to a "0", the alarm will be the result of a match with the
date of the month. If DY/DT is written to a "1", the alarm will be the result of a match with the day of the
week.
VRT1 - Valid RAM and Time Bit 1 (0 EH bit 7)
VRT2 - Valid RAM and Time Bit 2 (0 EH bit 6)
These status bits gives the condition of any batteries attached to the VBAT or VBAUX pins.
The
DS1500/DS1510 constantly monitors the battery voltage of the back-up battery sources (VBAT and
VBAUX). The VRT1 and VRT2 bits will be set to a "1" if the battery voltage on VBAT and VBAUX are less
than 2.5V (typical), otherwise VRT1 and VRT2 bits will be a "0". VRT1 reflects the condition of VBAT
with VRT2 reflecting VBAUX. If either bit is read as a "0", the voltage on the respective pin is inadequate
to maintain the RAM memory or clock functions.
PRS - PAB Reset Select Bit (0 EH bit 5)
When set to a "0" the PWR pin will be set hi-Z when the DS1500/DS1510 goes into power fail. When set
to a "1", the PWR pin will remain active upon entering power fail.
相關PDF資料 |
PDF描述 |
|---|---|
| DS1501WN | 1 TIMER(S), REAL TIME CLOCK, PDIP28 |
| DS1501YN | 1 TIMER(S), REAL TIME CLOCK, PDIP28 |
| DS1501WEN | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| DS1501WSN | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| DS1501YEN | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS1501 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Y2K-Compliant Watchdog Real-Time Clocks |
| DS1501_09 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Y2K-Compliant Watchdog Real-Time Clocks |
| DS1501-7R | 功能描述:EURO-CASSETTE 100W 15V RoHS:否 類別:電源 - 外部/內部（非板載） >> DC DC Converters 系列:* 標準包裝:1 系列:Quint 類型:隔離 輸入電壓:24V 輸出:24V 輸出數(shù):1 輸出 - 1 @ 電流（最大）:24 VDC @ 50A 輸出 - 2 @ 電流（最大）:- 輸出 - 3 @ 電流（最大）:- 輸出 - 4 @ 電流（最大）:- 功率（瓦特）:1200W 安裝類型:底座安裝 工作溫度:0°C ~ 40°C 效率:- 封裝/外殼:模塊 尺寸/尺寸:4.33" L x 9.09" W x 6.14" H（110mm x 231mm x 156mm） 包裝:散裝 電源（瓦特）- 最大:1200W 批準:- 其它名稱:277-69722866365-NDQUINT-BAT/24DC/12AH |
| 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) >> 時鐘/計時 - 實時時鐘 系列:- 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:時鐘/日歷 特點:警報器，閏年，SRAM 存儲容量:- 時間格式:HH:MM:SS（12/24 小時） 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 供應商設備封裝:8-TDFN EP 包裝:管件 |
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