12032IVZ 데이터 시트보기 (PDF) - Renesas Electronics

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12032IVZ

Low Power RTC with Battery Backed SRAM and 50/60 Cycle AC Input and Crystal Back-up

Renesas Electronics 

ISL12032 Real Time Clock with 50/60 Hz clock and Crystal Backup

SDA vs SCL Timing

tF

tHIGH

tLOW

tR

SCL

tSU:STA

SDA

(INPUT TIMING)

SDA

(OUTPUT TIMING)

tSU:DAT

tHD:STA

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

Will change

from LOW

to HIGH

Will change

from HIGH

to LOW

Changing:

State Not Known

N/A

Center Line is

High Impedance

EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR VDD = 5V

5.0V

SDA

AND

IRQ/FOUT

1533

FOR VOL= 0.4V

AND IOL = 3mA

100pF

FIGURE 1. STANDARD OUTPUT LOAD FOR TESTING THE

DEVICE WITH VDD = 5.0V

tSU:STO

tBUF

FN6618 Rev 3.00

May 5, 2011

Page 7 of 26

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