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參數(shù)資料
| 型號： | DS1244WP-120IND |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 17/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC NVSRAM 256KBIT 120NS 34PCM |
| 標(biāo)準(zhǔn)包裝： | 40 |
| 類型： | Phantom 計時芯片 |
| 特點： | 閏年，NVSRAM |
| 存儲容量： | 32KB |
| 時間格式： | HH:MM:SS:hh（12/24 小時） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | 并聯(lián) |
| 電源電壓： | 2.97 V ~ 3.63 V |
| 電壓 - 電源，電池： | 3V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 34-PowerCap? 模塊 |
| 供應(yīng)商設(shè)備封裝： | 34-PowerCap 模塊 |
| 包裝： | 管件 |
DS1244/DS1244P
6 of 20
PHANTOM CLOCK REGISTER INFORMATION
The phantom clock information is contained in eight registers of 8 bits, each of which is sequentially
accessed 1 bit at a time after the 64-bit pattern recognition sequence has been completed. When updating
the phantom clock registers, each register must be handled in groups of 8 bits. Writing and reading
individual bits within a register could produce erroneous results. These read/write registers are defined in
Figure 2.
Data contained in the phantom clock register is in binary coded decimal (BCD) format. Reading and
writing the registers is always accomplished by stepping through all eight registers, starting with bit 0 of
register 0 and ending with bit 7 of register 7.
Figure 1. PHANTOM CLOCK REGISTER DEFINITION
NOTE: THE PATTERN RECOGNITION IN HEX IS C5, 3A, A3, 5C, C5, 3A, A3, 5C. THE ODDS OF THIS PATTERN BEING
ACCIDENTALLY DUPLICATED AND CAUSING INADVERTENT ENTRY TO THE PHANTOM CLOCK IS LESS THAN 1 IN
1019. THIS PATTERN IS SENT TO THE PHANTOM CLOCK LSB TO MSB.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1244WP-120IND+ | 功能描述:實時時鐘 256k NV SRAM w/Phantom Clock 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 時間格式:HH:MM:SS RTC 存儲容量: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 |
| DS1244Y | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:Real Time Clock, Non-Volatile, 28 Pin, Plastic, DIP |
| DS1244Y120 | 制造商:Maxim Integrated Products 功能描述: |
| DS1244Y-120 | 制造商:Maxim Integrated Products 功能描述: |
| DS1244Y-150 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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