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参数资料
| 型号： | DS1553 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | 64K NV Y2KC Timekeeping RAM(64K非易失性Y2KC 计时 RAM) |
| 中文描述： | 64kB、非易失、Y2K兼容时钟RAM |
| 文件页数： | 6/19页 |
| 文件大小： | 165K |
| 代理商： | DS1553 |
DS1553
070198 6/19
ALARM MASK BITS
Table 3
AM4
AM3
AM2
AM1
ALARM RATE
1
1
1
1
Once per second
1
1
1
0
When seconds match
1
1
0
0
When minutes and seconds match
1
0
0
0
When hours, minutes, and seconds match
0
0
0
0
When date, hours, minutes, and seconds match
When the RTC register values match alarm register set-
tings, the Alarm Flag bit (AF) is set to a “1”. If Alarm Flag
Enable (AE) is also set to a “1”, the alarm condition acti-
vates the IRQ/FT pin. The IRQ/FT signal is cleared by a
read or write to the Flags register (Address 1FF0h) as
shown in Figure 2 and 3. The IRQ/FT signal may be
cleared by having the address stable for as short as 15
ns and either CE or WE active, but is not guaranteed to
be cleared unless t
RC
is fulfilled. The alarm flag is also
cleared by a read or write to the Flags register but the
flag will not change states untilthe end of the read/write
cycle and the IRQ/FT signal has been cleared.
CLEARING IRQ WAVEFORMS
Figure 2
A0–A12
IRQ/FT
15 ns MIN
ADDRESS 1FF0h
HIGH–Z
WE, OE, OV
CLEARING IRQ WAVEFORMS
Figure 3
A0–A12
IRQ/FT
15 ns MIN
ADDRESS 1FF0h
HIGH–Z
WE, OE
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| DS1609 | Dual Port RAM(双端口RAM) |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1553-100 | 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 |
| DS1553-100+ | 功能描述:实时时钟 64kB NV RAM Timekeeper 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 |
| DS1553-70 | 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 |
| DS1553-70+ | 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 |
| DS1553-85+ | 功能描述:实时时钟 64kB NV RAM Timekeeper 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 |
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