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參數(shù)資料
| 型號： | DS1216F-3 |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 11/15頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SMART/ROM 3V 64/256/1M 32DIP |
| 標準包裝： | 13 |
| 控制器類型： | Smartwatch ROM |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 70°C |
| 封裝/外殼： | 32-DIP（0.600"，15.24mm）插口 |
| 供應(yīng)商設(shè)備封裝： | 32-DIP 插口 |
| 包裝： | 管件 |
DS1216 SmartWatch RAM/SmartWatch ROM
5 of 15
Figure 1. SmartWatch Comparison Register Definition
NONVOLATILE CONTROLLER OPERATION
The DS1216 SmartWatch performs circuit functions required to make a CMOS RAM nonvolatile. First, a
switch is provided to direct power from the battery or VCC supply, depending on which voltage is greater.
This switch has a voltage drop of less than 0.2V. The second function that the SmartWatch provides is
power-fail detection, which occurs at VTP. The DS1216 constantly monitors the VCC supply. When VCC
goes out of tolerance, a comparator outputs a power-fail signal to the chip-enable logic. The third function
accomplishes write protection by holding the chip-enable signal to the memory within 0.2V of VCC or
battery. During nominal power-supply conditions, the memory chip-enable signal will track the chip-
enable signal sent to the socket with a maximum propagation delay of 6ns.
FRESHNESS SEAL
Each DS1216 is shipped from Maxim with its lithium energy source disconnected, ensuring full energy
capacity. When VCC is first applied at a level greater than the lithium energy source is enabled for battery-
backup operation.
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
BYTE 0
BYTE 1
BYTE 2
BYTE 3
BYTE 4
BYTE 5
BYTE 6
BYTE 7
C5
3A
A3
5C
C5
3A
A3
5C
HEX
VALUE
7
0
NOTE: THE PATTERN RECOGNITION IN HEX IS C5, 3A, 5C, C5, 3A, A3, 5C. THE ODDS OF THIS PATTERN
ACCIDENTALLY DUPLICATING AND CAUSING INADVERTENT ENTRY TO THE SMARTWATCH ARE LESS
THAN 1 IN 1019. THIS PATTERN IS SENT TO THE SMARTWATCH LSB TO MSB.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1216H | 功能描述:存儲器控制器 SmartWatch RAM RoHS:否 制造商:Maxim Integrated |
| DS1216MP000 | 制造商:Thomas & Betts 功能描述:100A,PLG,2P3W,MG,216,208V |
| DS1216MR000 | 制造商:Thomas & Betts 功能描述:100A,NLT,2P3W,MG,216,208V |
| DS1216MRA00 | 制造商:Thomas & Betts 功能描述:100A,NLT,2P3W,MG,AGL,208V |
| DS1217 | 制造商:BB 制造商全稱:BB 功能描述:8-Channel, 24-Bit ANALOG-TO-DIGITAL CONVERTER |
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