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DS28DG02E-3C+T Datasheet(PDF) 2 Page - Dallas Semiconductor |
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DS28DG02E-3C+T Datasheet(HTML) 2 Page - Dallas Semiconductor |
2 / 33 page DS28DG02: 2kb SPI EEPROM with PIO, RTC, Reset, Battery Monitor, and Watchdog 2 of 33 ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground -0.5V, +6V Maximum Current SO, ALMZ, RSTZ, WDOZ Pins ±20mA Maximum Current Each PIO Pin ±50mA Maximum GND and VCC Current 270mA Operating Temperature Range -40°C to +85°C Junction Temperature +150°C Storage Temperature Range -55°C to +125°C Soldering Temperature See IPC/JEDEC J-STD-020 Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device. ELECTRICAL CHARACTERISTICS (TA = -40°C to +85°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Battery monitor off 2.2 5.25 Supply Voltage VCC Battery monitor enabled 2.7 5.25 V Battery Voltage VBAT (Note 1) 1.5 3.0 VCC V RTC oscillator off 2 RTC oscillator on 0.4 10 Battery Current (VBAT = 3.0V, Note 1) IBAT RTC oscillator on, +25°C 4.7 µA Standby Current (Note 2) ICCS SPI idle, ALMZ, WDOZ, RTSZ high, VCC = 5.25V, RTC oscillator on, all PIOs grounded 60 100 µA Operating Current ICCA Reading EEPROM at 2 Mbps, ALMZ, WDOZ, RTSZ high, VCC = 5.25V, RTC oscillator on, all PIOs grounded 550 800 µA Programming Current IPROG VCC = 5.25V 600 1000 µA VCC Monitor Trip Point VTRIP (Note 3) 2.97 3.05 3.14 V +25°C -1.5 +1.5 VCC Monitor Trip-Point Tolerance VTRIPTOL -40°C to +85°C -2.5 +2.5 %VTRIP VCC Monitor Hysteresis VHYST 0.4 0.5 0.6 %VTRIP Power-Up Wait Time tPOIP 60 µs EEPROM Programming Time tPROG 10 ms Endurance NCYCLE At +25°C (Notes 4, 5) 200k — Data Retention tRET At +85°C (Notes 5, 6) 40 years REAL-TIME CLOCK Frequency Deviation ΔF (Notes 5, 7) -46 +46 PPM PIO PINS (See Figures 21, 22, 23) VCC = 2.2V 6 9.5 VCC = 3.3V 12.5 22.0 LOW-Level Output Current at VOL = 0.5V (Note 8) IOL VCC = 5.25V 19 30 mA VOH = 2.4V, VCC = 3.3V 6.5 11.0 HIGH-Level Output Current (Note 8) IOH VOH = 4.5V, VCC = 5.25V 12.5 18.0 mA |
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