Rainbow-electronics DS1615 Manual do Utilizador descarregar pdf (Página 22)

DS1615

22 of 24

AC ELECTRICAL CHARACTERISTICS (-40°C to +85°C; V

=5.0V ±10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Vcc rise/fall time t

3 500 ms

Delay from ST to INSPEC or

OUTSPEC Active

560 ms

Delay from Specification to

INSPEC or OUTSPEC Active

560 ms

Temperature Conversion Time t

CONV

150 200 ms

INSPEC and OUTSPEC Active

Low Pulse Width

62.5 ms

INSPEC and OUTSPEC High

Duration

437.5 ms

ASYNCHRONOUS INTERFACE TIMING (-40°C to +85°C; V

=5.0V ±10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Date Rate f

BIT

9,408 9,600 9,792 bits/sec 2

Turnaround Time t

TURN

2/f

BIT

SYNCHRONOUS (3-WIRE) SERIAL

INTERFACE TIMING (-40°C to 85°C; V

=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 MHz 3

SCLK Rise and Fall t

, t

2.0 ns

RST to SCLK Setup

1 500

µs

SCLK to RST Hold

CCH

60 ns 3

RST Inactive Time

CWH

µs

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

= 0.0V and 10 ns maximum rise and fall time.

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.

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