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參數(shù)資料
| 型號(hào)： | DS1394U-33+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 26/26頁(yè) |
| 文件大小： | 0K |
| 描述： | IC RTC SPI 3WIRE W/CHRGR 10-MSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 類(lèi)型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | 警報(bào)器，閏年，方波輸出，涓流充電器 |
| 時(shí)間格式： | HH:MM:SS:hh（12/24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | SPI |
| 電源電壓： | 2.97 V ~ 5.5 V |
| 電壓 - 電源，電池： | 1.3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-µMAX |
| 包裝： | 帶卷 (TR) |
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DS1390–DS1394
Low-Voltage SPI/3-Wire RTCs with
Trickle Charger
9
Maxim Integrated
CAPACITANCE
(TA = +25°C)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Capacitance on All Input Pins
CIN
10
pF
Capacitance on All Output Pins
(High Impedance)
CIO
10
pF
WARNING: Negative undershoots below -0.3V while the part is in battery-backed mode can cause loss of data.
Note 1:
Limits at -40°C are guaranteed by design and not production tested.
Note 2:
All voltages are referenced to ground.
Note 3:
The use of the 250
trickle-charge resistor is not allowed at VCC > 3.63V and should not be enabled. Use of the diode is
not recommended for VCC < 3.0V.
Note 4:
Measured at VCC = typ, VBACKUP = 0V, register 0Fh = A5h.
Note 5:
Measured at VCC = typ, VBACKUP = 0V, register 0Fh = A6h.
Note 6:
Measured at VCC = typ, VBACKUP = 0V, register 0Fh = A7h.
Note 7:
SCLK, DIN, CS on DS1390/DS1391/DS1394; SCLK, and CE on DS1392/DS1393.
Note 8:
DOUT, SQW/INT (DS1390/DS1393/DS1394), SQW, and INT (DS1392).
Note 9:
The RST pin has an internal 50k
(typ) pullup resistor to VCC.
Note 10: ICCA—SCLK clocking at max frequency = 4MHz for 3V and 3.3V versions; 1MHz for 1.8V version; RST (DS1391/DS1393)
inactive. Outputs are open.
Note 11: Specified with bus inactive.
Note 12: Measured with a 32.768kHz crystal attached to X1 and X2. Typical values measured at +25°C and 3.0VBACKUP.
Note 13: With 50pF load.
Note 14: Measured at VIH = 0.7 x VDD or VIL = 0.2 x VDD, 10ns rise/fall times.
Note 15: Measured at VOH = 0.7 x VDD or VOL = 0.2 x VDD. Measured from the 50% point of SCLK to the VOH minimum of SDO.
Note 16: The parameter tOSF is the time that the oscillator must be stopped for the OSF flag to be set over the voltage range of
0
≤ VCC ≤ VCC(MAX) and 1.3V ≤ VBACKUP ≤ 5.5V.
Note 17: This delay applies only if the oscillator is enabled and running. If the EOSC bit is 1, the startup time of the oscillator is
added to this delay.
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