ISL12057 Ver la hoja de datos (PDF) - Renesas Electronics

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componentes Descripción

Fabricante

ISL12057

Low Cost and Low Power I2C RTC Real Time Clock/Calendar with Alarm Function and Dual IRQ Pins

Renesas Electronics 

ISL12057

SDA vs SCL Timing

tF

tHIGH

SCL

tSU:STA

SDA

(INPUT TIMING)

tSU:DAT

tHD:STA

SDA

(OUTPUT TIMING)

tLOW

tR

tHD:DAT

tAA

tDH

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

tSU:STO

tBUF

EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR VDD = 5V

5.0V

SDA,

IRQ1/FOUT

AND

IRQ2

1533

FOR VOL= 0.4V

AND IOL = 3mA

100pF

FIGURE 1. STANDARD OUTPUT LOAD FOR TESTING THE

DEVICE WITH VDD = 5.0V

FN6755 Rev 2.00

Sep 25, 2015

Page 6 of 18

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