DS1624 Datasheet, PDF(15/16 Page) Dallas Semiconductor

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DS1624 Datasheet, PDF (15/16 Pages) Dallas Semiconductor – Digital Thermometer and Memory

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AC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

Input Capacitance

DS1624

(-55Â°C to +125Â°C; VDD=2.7V to 5.5V)

MIN TYP MAX UNITS NOTES

NOTES:

1. All voltages are referenced to ground.

2. I/O pins of fast mode devices must not obstruct the SDA and SCL lines if V DD is switched off.

3. ICC specified with SDA pin open.

4. ICC specified with V CC at 5.0V and SDA, SCL = 5.0V, 0Â°C to 70Â°C.

5. After this period, the first clock pulse is generated.

6. The maximum tHD:DAT has only to be met if the device does not stretch the LOW period (tLOW) of the

SCL signal.

7. A fast mode device can be used in a standard mode system, but the requirement tSU:DAT >250 ns must

then be met. This will automatically be the case if the device does not stretch the LOW period of the

SCL signal. If such a device does stretch the LOW period of the SCL signal, it must output the next

data bit to the SDA line tRMAX+tSU:DAT = 1000+250 = 1250 ns before the SCL line is released.

8. Cb â total capacitance of one bus line in pF.

9. Writing to the nonvolatile memory should only take place in the 0Â°C to 70Â°C temperature range.

10. See Typical Curve for specification limits outside the 0Â°C to 70Â°C temperature range. Thermometer

error reflects sensor accuracy as tested during calibration.

TIMING DIAGRAMS

15 of 16

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