參數(shù)資料
型號(hào)： DS1500W
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： Timer or RTC
英文描述： REAL TIME CLOCK, PDIP32
封裝： DIP-32
文件頁(yè)數(shù)： 4/25頁(yè)
文件大小： 214K
代理商： DS1500W
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(guān)PDF資料
PDF描述
DS1500WN REAL TIME CLOCK, PDIP32
DS1500YE REAL TIME CLOCK, PDSO32
DS1500YEN REAL TIME CLOCK, PDSO32
DS1500YN REAL TIME CLOCK, PDIP32
DS1501WN 1 TIMER(S), REAL TIME CLOCK, PDIP28
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DS1500WE+ 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
DS1500WEN 功能描述:IC RTC Y2KC W/NV CTRL 32-TSOP RoHS:否 類(lèi)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(lèi)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(lèi)型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件
DS1500WEN+ 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
DS1500WN 功能描述:IC RTC Y2KC W/NV CTRL 32-DIP RoHS:否 類(lèi)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(lèi)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(lèi)型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件
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