ISL12022M Просмотр технического описания (PDF) - Intersil

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производитель

ISL12022M

Real Time Clock with Embedded Crystal, ±5ppm Accuracy

Intersil 

ISL12022M

SDA vs SCL Timing

tF

tHIGH

tLOW

tR

SCL

tSU:STA

SDA

(INPUT TIMING)

SDA

(OUTPUT TIMING)

tSU:DAT

tHD:STA

EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR VDD = 5V

5.0V

SDA

AND

IRQ/FOUT

1533Ω

FOR VOL= 0.4V

AND IOL = 3mA

100pF

FIGURE 1. STANDARD OUTPUT LOAD FOR TESTING THE

DEVICE WITH VDD = 5.0V

tHD:DAT

tAA

tDH

tSU:STO

tBUF

Symbol Table

WAVEFORM

INPUTS

Must be steady

OUTPUTS

Will be steady

May change

from LOW

to HIGH

May change

from HIGH

to LOW

Don’t Care:

Changes Allowed

N/A

Will change

from LOW

to HIGH

Will change

from HIGH

to LOW

Changing:

State Not Known

Center Line is

High Impedance

6

FN6668.5

July 10, 2009

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