Rainbow-electronics DS1558Y Instrukcja Użytkownika Pobierz pdf (Strona 12)

DS1558

12 of 18

DC ELECTRICAL CHARACTERISTICS

= +3.3V ±10% or +5V ±10%, T

= -40°C to +85°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Active Supply Current, +5V I

6 25 mA 2, 3

Active Supply Current, +3.3V I

4 15 mA 2, 3

TTL Standby, +5V ( CE = V

)

CC1

3 6 mA 2, 3

TTL Standby, +3.3V ( CE = V

)

CC1

2 6 mA 2, 3

CMOS Standby Current, +5V

(

CE ³ V

- 0.2V)

CC2

2 6 mA 2, 3

CMOS Standby Current, +3.3V

(

CE ³ V

- 0.2V)

CC2

1 2 mA 2, 3

Input Leakage Current

(Any Input)

-1 +1

Output Leakage Current

(Any Output)

-1 +1

Output Logic 1 Voltage

OUT

= -1.0mA)

2.4 V 1

Output Logic 0 Voltage

OUT

= 2.1mA, DQ0–DQ7

Outputs

OL1

0.4 V 1

OUT

= 7.0mA, IRQ /FT and

RST Outputs

OL2

0.4 V 1, 5

Write Protection Voltage, +5V V

4.25 4.37 4.50 V 1

Write Protection Voltage, +3.3V V

2.80 2.88 2.97 V 1

Battery Switchover Voltage, +5V V

BAT

Battery Switchover Voltage, +3.3V V

V 1, 4

Battery Current OSC On I

OSC

0.3 0.5 µA 6,7

Battery Current OSC Off I

BACKUP

100 nA 7

Output Voltage I

CCO

= 70mA, +5V V

CC01

CC1

- 0.3 V

Output Voltage I

CCO

= 40mA, +3.3V V

CC01

CC1

- 0.3 V

Output Voltage I

CCO

= 10µA V

CC02

BAT

- 0.2 V

BAT

- 0.031 V 10

CRYSTAL SPECIFICATIONS

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Nominal Frequency F

32.768 kHz

Series Resistance ESR 45 kΩ

Load Capacitance C

6pF

*The crystal, traces, and crystal input pins should be isolated from RF generating signals. Refer to Application Note 58 “Crystal Considerations

for Dallas Real-Time Clocks” for additional specifications.

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