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參數(shù)資料
| 型號： | DS1543 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 64K NV Timekeeping RAM(64K非易失性計(jì)時(shí) RAM) |
| 中文描述： | 計(jì)時(shí)64K的非易失存儲(chǔ)器（64K的非易失性計(jì)時(shí)的RAM） |
| 文件頁數(shù)： | 6/19頁 |
| 文件大小： | 165K |
| 代理商： | DS1543 |
DS1543
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. 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 until the 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1543-100 | 功能描述:實(shí)時(shí)時(shí)鐘 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 |
| DS1543-100+ | 功能描述:實(shí)時(shí)時(shí)鐘 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 |
| DS1543-70 | 功能描述:實(shí)時(shí)時(shí)鐘 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 |
| DS1543-85 | 功能描述:實(shí)時(shí)時(shí)鐘 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 |
| DS1543-85+ | 功能描述:實(shí)時(shí)時(shí)鐘 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 |
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