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

50

ns

3

Data to SCLK Setup

50

ns

3

SCLK to Data Hold

70

ns

3

SCLK to Data Delay

200

ns

3,4,5

SCLK Low Time

250

ns

3

SCLK High Time

250

ns

3

SCLK Frequency

DC

2.0

MHz

3

SCLK Rise and Fall

500

ns

RST

to SCLK Setup

1

µs

3

60

ns

3

RST

Inactive Time

1

µs

3

RST

to I/O High Z

70

ns

3, 7

SCLK to I/O High Z

70

ns

3, 7

NOTES:

1. All voltages are referenced to ground,

5. Load Capacitance = 50 pF.

6. Thermometer error reflects temperature error as tested during calibration.

7. Sampled with 5 pF load. Not 100% tested.

8. 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.

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

ASYNCHRONOUS SERIAL INTERFACE TIMING Figure 5

RX

TX

DATA

START

STOP

DATA

START

STOP

t

TURN

t

BIT

t

BIT