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ISL12022M Arkusz danych(PDF) 5 Page - Intersil Corporation

Numer części ISL12022M
Szczegółowy opis  Low Power RTC with Battery Backed SRAM, Integrated 짹5ppm Temperature Compensation, and Auto Daylight Saving
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Producent  INTERSIL [Intersil Corporation]
Strona internetowa  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL12022M Arkusz danych(HTML) 5 Page - Intersil Corporation

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5
FN6668.5
July 10, 2009
tSU:STO
STOP Condition Setup Time
From SCL rising edge
crossing 70% of VDD, to SDA
rising edge crossing 30% of
VDD.
600
ns
tHD:STO
STOP Condition Hold Time
From SDA rising edge to
SCL falling edge. Both
crossing 70% of VDD.
600
ns
tDH
Output Data Hold Time
From SCL falling edge
crossing 30% of VDD, until
SDA enters the 30% to 70%
of VDD window.
0ns
tR
SDA and SCL Rise Time
From 30% to 70% of VDD.
20 + 0.1 x Cb
300
ns
8, 9
tF
SDA and SCL Fall Time
From 70% to 30% of VDD.
20 + 0.1 x Cb
300
ns
8, 9
Cb
Capacitive Loading of SDA or SCL Total on-chip and off-chip
10
400
pF
8, 9
RPU
SDA and SCL Bus Pull-up Resistor
Off-chip
Maximum is determined by
tR and tF.
For Cb = 400pF, max is about
2k
Ω~2.5kΩ.
For Cb = 40pF, max is about
15k
Ω~20kΩ
1k
Ω
8, 9
NOTES:
3. Temperature Conversion is inactive below VBAT = 2.7V. Device operation is not guaranteed at VBAT <1.8V.
4. IRQ/FOUT inactive.
5. VDD > VBAT +VBATHYS
6. Specified at +25°C.
7. In order to ensure proper timekeeping, the VDD SR- specification must be followed.
8. Limits should be considered typical and are not production tested.
9. These are I2C specific parameters and are not tested, however, they are used to set conditions for testing devices to validate
specification.
10. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by
characterization and are not production tested.
11. Minimum VDD and/or VBAT of 1V to sustain the SRAM. The value is based on characterization and it is not tested.
I2C Interface Specifications
Test Conditions: VDD = +2.7 to +5.5V, Temperature = -40°C to +85°C,
unless otherwise specified. (Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
(Note 10)
TYP
(Note 6)
MAX
(Note 10) UNITS
NOTES
ISL12022M


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