Rainbow-electronics DS1603 Manual do Utilizador descarregar pdf (Página 8)

DS1603

8 of 9

AC ELECTRICAL CHARACTERISTICS (V

= +5V ±10%; 0°C to +70°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Data to CLK Setup t

50 ns 6

CLK to Data Hold t

CDH

60 ns 6

CLK to Data Delay t

CDD

200 ns 6, 7, 8

CLK Low Time t

250 ns 6

CLK High Time t

250 ns 6

CLK Frequency f

CLK

DC 2.0 MHz 6

CLK Rise and Fall t

500 ns

RST to CLK Setup

100 ns 6

CLK to RST Hold t

CCH

60 ns 6

RST Inactive Time

CWH

1 µs 6

RST Low to I/O High-Z

RDZ

70 ns 6

CLK High to I/O High-Z t

CDZ

20 ns 6

= +25°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Expected Data

Retention Time

10 years 10

NOTES:

1) All voltages are referenced to ground.

2) Logic 1 voltages are specified at a source current of 1mA.

3) Logic 0 voltages are specified at a sink current of 4mA.

4) I

is specified with the DQ pin open.

5) I

CC1

is specified with V

at 5.0V and RST = GND.

6) Measured at V

= 2.0V or V

= 0.8V.

7) Measured at V

= 2.4V or V

- 0.4V.

8) Load capacitance = 50pF.

9) Battery trip point is the point at which the V

powered counter and the serial port stops operation.

The battery trip point drops below the minimum once the internal lithium energy cell is exhausted.

10) The expected t

is defined as accumulative time in the absence of V

with the clock oscillator

running.

11) Real-time clock modules can be successfully processed through conventional wave-soldering

techniques as long as temperature exposure to the lithium energy source contained within does not

exceed +85°C. Post-solder cleaning with water-washing techniques is acceptable, provided that

ultrasonic vibration is not used.

1 2 3 4 5 6 7 8 9

Comentários a estes Manuais

Sem comentários

Rainbow-electronics DS1603 Manual do Utilizador Página 8

Comentários a estes Manuais

Manuais e produtos relacionados com Hardware de computador Rainbow-electronics DS1603