參數(shù)資料
型號(hào)： DS17485EN-3
英文描述： 3V/5V Real-Time Clock
中文描述： 3V/5V實(shí)時(shí)時(shí)鐘
文件頁(yè)數(shù)： 34/38頁(yè)
文件大小： 427K
代理商： DS17485EN-3
DS17485/DS17487
34 of 38
BURST MODE TIMING WAVEFORM
NOTES:
1) Typical values are at +25°C and nominal supplies.
2) Outputs are open.
3) Write-protection trip point occurs during power-fail prior to switchover from V
CC
to V
BAT
.
4) Applies to the AD0 to AD7 pins, and the SQW pin when each is in a high-impedance state.
5) The IRQ and PWR pins are open-drain.
6) Measured with a load of 50pF + 1 TTL gate.
7) Wake-up kickstart timeout generated only when the oscillator is enabled and the countdown chain is
not reset.
8) V
SW
is determined by the larger of V
BAT
and V
BAUX
.
9) The DS17487 keeps time to an accuracy of ±1 minute per month during data retention time for the
period of t
DR
.
10) t
DR
is the amount of time that the internal battery can power the internal oscillator and internal
registers of the DS17487.
11) I
BAT1
and I
BAT2
are measured at V
BAT
= 3.5V.
12) RTC modules can be successfully processed through conventional wave-soldering techniques as long
as temperature exposure to the lithium energy source contained within does not exceed +85°C. Post-
solder cleaning with water-washing techniques is acceptable, provided that ultrasonic vibration is not
used.
相關(guān)PDF資料
PDF描述
DS17485EN-5 3V/5V Real-Time Clock
DS17485S-3 3V/5V Real-Time Clock
DS17485S-5 3V/5V Real-Time Clock
DS17485SN-3 3V/5V Real-Time Clock
DS17485SN-5 3V/5V Real-Time Clock
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS17485EN-5 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3V/5V Real-Time Clock
DS17485N-3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Real-Time Clock
DS17485N-5 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Real-Time Clock
DS17485S-3 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
DS17485S-3/T&R 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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