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参数资料
| 型号： | DS1500W |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | Timer or RTC |
| 英文描述： | REAL TIME CLOCK, PDIP32 |
| 封装： | DIP-32 |
| 文件页数： | 4/25页 |
| 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.
相关PDF资料 |
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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1500WE | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1500WE+ | 功能描述:实时时钟 Y2K-Compliant Watchdog RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1500WEN | 功能描述:IC RTC Y2KC W/NV CTRL 32-TSOP RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 实时时钟 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 类型:时钟/日历 特点:警报器，闰年，SRAM 存储容量:- 时间格式:HH:MM:SS（12/24 小时） 数据格式:YY-MM-DD-dd 接口:SPI 电源电压:2 V ~ 5.5 V 电压 - 电源，电池:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN EP 包装:管件 |
| DS1500WEN+ | 功能描述:实时时钟 Y2K-Compliant Watchdog RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1500WN | 功能描述:IC RTC Y2KC W/NV CTRL 32-DIP RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 实时时钟 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 类型:时钟/日历 特点:警报器，闰年，SRAM 存储容量:- 时间格式:HH:MM:SS（12/24 小时） 数据格式:YY-MM-DD-dd 接口:SPI 电源电压:2 V ~ 5.5 V 电压 - 电源，电池:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN EP 包装:管件 |
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