Rainbow-electronics DS1616 Manual de usuario descargar pdf (Pagina 27)

DS1616

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SYNCHRONOUS (3-WIRE) SERIAL INTERFACE TIMING

(-40°C to +85°C; Vcc = 5.0V ±10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Data to SCLK Setup t

50 ns 3

SCLK to Data Hold t

CDH

70 ns 3

SCLK to Data Delay t

CDD

200 ns 3,4,5

SCLK Low Time t

250 ns 3

SCLK High Time t

250 ns 3

SCLK Frequency t

CLK

DC 2.0 MHz 3

SCLK Rise and Fall t

, t

500 ns

RST to SCLK Setup

SCLK to RST Hold

CCH

60 ns 3

RST Inactive Time

CWH

RST to I/O High Z

CDZ

70 ns 3, 7

SCLK to I/O High Z t

CCZ

70 ns 3, 7

NOTES:

1. All voltages are referenced to ground,

The data rate f

BIT

is equal to 1/t

BIT

3. Measured with V

= 3.0V or V

= 0V.

Measured at V

=2.4V or V

=0.4V.

Load Capacitance = 50 pF.

Thermometer error reflects temperature error as tested during calibration.

Sampled with 5 pF load. Not 100% tested.

The internal reference of 2.04V is set so that the ADC will work down to the minimum battery

voltage of 2.7V. The ADC input voltage must not be greater than the battery voltage.

The Integral Non-linearity does not take into consideration the tolerance of the Voltage Reference.

ASYNCHRONOUS SERIAL INTERFACE TIMING Figure 6

DATASTART

STOP

DATASTART

STOP

TURN

BIT

1 2 ... 22 23 24 25 26 27 28

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Rainbow-electronics DS1616 Manual de usuario Pagina 27

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