參數(shù)資料
型號: DS3234S#T&R
廠商: Maxim Integrated Products
文件頁數(shù): 17/21頁
文件大?。?/td> 0K
描述: IC RTC W/TCXO 20-SOIC
產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 1,000
類型: 時鐘/日歷
特點: 警報器,閏年,NVSRAM,方波輸出,TCXO/晶體
存儲容量: 256B
時間格式: HH:MM:SS(12/24 小時)
數(shù)據(jù)格式: YY-MM-DD-dd
接口: SPI
電源電壓: 2 V ~ 5.5 V
電壓 - 電源,電池: 2 V ~ 3.8 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 20-SOIC W
包裝: 帶卷 (TR)
DS3234
Extremely Accurate SPI Bus RTC with
Integrated Crystal and SRAM
_____________________________________________________________________
5
Pushbutton Reset Timing
tRST
PBDB
RST
Power-Switch Timing
VCC
VPF(MAX)
RST
VPF(MIN)
tVCCF
tVCCR
tREC
VPF
Note 2: Limits at -40°C are guaranteed by design and not production tested.
Note 3: All voltages are referenced to ground.
Note 4: Measured at VIH = 0.8 x VCC or VIL = 0.2 x VCC, 10ns rise/fall time, DOUT = no load.
Note 5: Current is the averaged input current, which includes the temperature conversion current. CRATE1 = CRATE0 = 0.
Note 6: The RST pin has an internal 50k
Ω (nominal) pullup resistor to VCC.
Note 7: Measured at VOH = 0.8 x VCC or VOL = 0.2 x VCC. Measured from the 50% point of SCLK to the VOH minimum of DOUT.
Note 8: With 50pF load.
Note 9: The parameter tOSF is the period of time the oscillator must be stopped for the OSF flag to be set over the voltage range of
0V
≤ VCC ≤ VCC(MAX) and 2.3V ≤ VBAT ≤ VBAT(MAX).
Note 10: This delay only applies if the oscillator is enabled and running. If the EOSC bit is 1, tREC is bypassed and RST immediately
goes high.
Note 11: Guaranteed by design and not production tested.
WARNING: Negative undershoots below -0.3V while the part is in battery-backed mode may
cause loss of data.
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