ICL7109 Ver la hoja de datos (PDF) - Intersil

Número de pieza

componentes Descripción

Fabricante

ICL7109

12-Bit, Microprocessor Compatible A/D Converter

Intersil 

ICL7109

POSITVE TRANSITION CAUSES

ENTRY INTO

UART MODE

ZERO CROSSING

OCCURS

ZERO CROSSING

DETECTED

INTERNAL

CLOCK

INTERNAL

LATCH

STATUS

OUTPUT

MODE

INPUT

INTERNAL

MODE

UART

NORM

SEND INPUT

CE/LOAD OUTPUT

SEND

SENSED

LATCH PULSE INHIBITED

IN UART MODE

DEINT

PHASE III

SEND

SENSED

SEND

SENSED

STATUS OUTPUT

UNCHANGED IN

UART MODE

TERMINATES

UART MODE

HBEN

HIGH BYTE

DATA

LBEN

LOW BYTE

DATA

DATA VALID

DATA VALID

= DON’T CARE

= THREE-STATE HIGH IMPEDANCE

= THREE-STATE WITH PULLUP

FIGURE 9. HANDSHAKE TRIGGERED BY MODE

V+

CLOCK

24 22

OSC OSC

SEL IN

23

OSC

OUT

RC

V+ OR OPEN

ƒOSC = 0.45/RC

25

BUFFERED

OSC

OUT

FIGURE 10. RC OSCILLATOR

24 22

OSC OSC

SEL IN

23

OSC

OUT

÷58

25

BUFFERED

OSC

OUT

GND

CRYSTAL

FIGURE 11. CRYSTAL OSCILLATOR

17

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