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Número de pieza
componentes Descripción
ISL12022M Ver la hoja de datos (PDF) - Intersil
Número de pieza
componentes Descripción
Fabricante
ISL12022M
Real Time Clock with Embedded Crystal, ±5ppm Accuracy
Intersil
ISL12022M Datasheet PDF : 27 Pages
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ISL12022M
SDA vs SCL Timing
t
F
t
HIGH
t
LOW
t
R
SCL
t
SU:STA
SDA
(INPUT TIMING)
SDA
(OUTPUT TIMING)
t
SU:DAT
t
HD:STA
EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR V
DD
= 5V
5.0V
SDA
AND
IRQ/F
OUT
1533
Ω
FOR V
OL
= 0.4V
AND I
OL
= 3mA
100pF
FIGURE 1. STANDARD OUTPUT LOAD FOR TESTING THE
DEVICE WITH V
DD
= 5.0V
t
HD:DAT
t
AA
t
DH
t
SU:STO
t
BUF
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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