參數(shù)資料
型號(hào)： DS1685E-3
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 3/34頁(yè)
文件大小： 0K
描述： IC RTC 3V 64-BIT Y2KC 24-TSSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 62
類型： 時(shí)鐘/日歷
特點(diǎn)： 警報(bào)器，NVSRAM，方波輸出，Y2K
存儲(chǔ)容量： 242B
時(shí)間格式： HH:MM:SS（12/24 小時(shí)）
數(shù)據(jù)格式： YY-MM-DD-dd
接口： 并聯(lián)
電源電壓： 2.7 V ~ 3.7 V
電壓 - 電源，電池： 2.5 V ~ 3.7 V
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 24-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 24-TSSOP
包裝： 管件
其它名稱： DS1685E3
DS1685/DS1687 3V/5V Real-Time Clocks
11 of 34
CONTROL REGISTERS
The four control registers A, B, C, and D reside in both bank 0 and bank 1. These registers are accessible at all
times, even during the update cycle.
Register A (0Ah)
MSB
LSB
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
UIP
DV2
DV1
DV0
RS3
RS2
RS1
RS0
UIP – The update-in-progress (UIP) bit is a status flag that can be monitored. When the UIP bit is a 1, the update
transfer occurs soon. When UIP is a 0, the update transfer does not occur for at least 244s. The time, calendar,
and alarm information in RAM is fully available for access when the UIP bit is 0. The UIP bit is read-only. Writing
the SET bit in Register B to a 1 inhibits any update transfer and clears the UIP status bit.
DV2, DV1, DV0 - These three bits are used to turn the oscillator on or off and to reset the countdown chain. A
pattern of 01X is the only combination of bits that will turn the oscillator on and allow the RTC to keep time. A
pattern of 11X will enable the oscillator but holds the countdown chain in reset. The next update will occur at
500ms after a pattern of 01X is written to DV0, DV1, and DV2. The oscillator enable bit, DV1, will be set to a 1
when VCC is applied.
DV2 = Countdown Chain
1 – resets countdown chain only if DV1=1
0 – countdown chain enabled
DV1 = Oscillator Enable
1 – oscillator on
0 – oscillator off
DV0 = Bank Select
1 – extended registers
0 – original bank
RS3, RS2, RS1, RS0 – These four rate-selection bits select one of the 13 taps on the 15-stage divider or disable
the divider output. The tap selected can be used to generate an output square wave (SQW pin) and/or a periodic
interrupt. The user can do one of the following:
1) Enable the interrupt with the PIE bit;
2) Enable the SQW output pin with the SQWE or E32K bits;
3) Enable both at the same time and the same rate; or
4) Enable neither.
Table 3 lists the periodic interrupt rates and the square-wave frequencies that can be chosen with the RS bits.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1685E-3/T&R 制造商:Maxim Integrated Products 功能描述:IC RTC 3V 64-BIT Y2KC 24-TSSOP
DS1685E-3/T&R 功能描述:實(shí)時(shí)時(shí)鐘 3V/5V RTC 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
DS1685E-3/TR 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3V/5V Real-Time Clocks
DS1685E-3_12 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:3V/5V Real-Time Clocks
DS1685E-3+ 功能描述:實(shí)時(shí)時(shí)鐘 3V/5V RTC 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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