Rainbow-electronics DDS1693 Manual de usuario descargar pdf (Pagina 24)

DS1689/DS1693

24 of 32

DC ELECTRICAL CHARACTERISTICS

Over the operating range (3V)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Average V

CC

Power Supply Current I

CC1

5 10 mA 2, 3

CMOS Standby Current ( CS =V

CC

-0.2V)

I

CC2

0.5 2 mA 2, 3

Input Leakage Current (any input) I

IL

-1 +1

mA

CEI Input Leakage

I

CEI

-160 +1

mA

15

PSEL Input Leakage I

PSEL

+1 -160

mA

16

Output Leakage Current I

OL

+160 -1

mA

8

Output Logic 1 Voltage (I

OUT

= 0.4 mA) V

OH

2.4 V

Output Logic 0 Voltage (I

OUT

= 0.8 mA) V

OL

0.4 V

Output Voltage V

CCO1

V

CC

-0.3

V4

Output Current I

CCO1

50 mA 4

Power-Fail Trip Point V

PF

2.5 2.6 2.7 V 5

Output Voltage V

CCO2

V

BAT

-0.3

V6

Output Current I

CCO2

100

mA

6

Battery Leakage OSC ON I

BAT1

500 1000 nA

Battery Leakage OSC OFF I

BAT2

50 150 nA 17

I/O Leakage I

LO

-1 +1

mA

7

PWR Output @ 0.4V

I

OLPWR

4mA 1

CEI to CEO Impedance

Z

CE

120

W

12

RTC AC TIMING CHARACTERISTICS

Over the operating range (3V)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Cycle Time t

CYC

915 DC ns

Pulse Width, RD / WR Low

PW

RWL

375 ns

Pulse Width, RD / WR High

PW

RWH

450 ns

Input Rise and Fall Time t

R

, t

F

30 ns

Chip Select Setup Time Before WR , or RD

t

CS

75 ns

Chip Select Hold Time t

CH

0ns

Read Data Hold Time t

DHR

10 120 ns

Write Data Hold Time t

DHW

0ns

Muxed Address Valid Time to ALE Fall t

ASL

90 ns

Muxed Address Hold Time from ALE Fall t

AHL

30 ns

RD or WR High Setup to ALE Rise

t

ASD

30 ns

Pulse Width ALE High PW

ASH

180 ns

ALE Low Setup to RD or WR Fall

t

ASED

120 ns

Output Data Delay Time from RD

t

DDR

20 370 ns 9

Data Setup Time t

DSW

180 ns

IRQ Release from RD

t

IRD

2

ms

CEI to CEO Delay

t

CED

20 ns

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 30 31 32

Comentarios a estos manuales

Sin comentarios