ISL12058 Intersil Corporation, ISL12058 Datasheet - Page 6

• Manufacturer Part Number: ISL12058
• Description: Low Cost and Low Power I2C-Bus Real Time Clock/Calendar
• Manufacturer: Intersil Corporation

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SDA vs SCL Timing
Symbol Table
WAVEFORM
FIGURE 1. STANDARD OUTPUT LOAD FOR TESTING THE
(OUTPUT TIMING)
(INPUT TIMING)
EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR V
IRQ/F
DEVICE WITH V
SDA
SCL
SDA,
SDA
OUT
INPUTS
Must be steady
May change
from LOW
to HIGH
May change
from HIGH
to LOW
Don’t Care:
Changes Allowed
N/A
t
SU:STA
5.0V
DD
6
= 3.0V, V
t
100pF
1533Ω
HD:STA
t
OUTPUTS
Will be steady
Will change
from LOW
to HIGH
Will change
from HIGH
to LOW
Changing:
State Not Known
Center Line is
High Impedance
F
PULLUP
FOR V
AND I
t
SU:DAT
OL
DD
OL
= 5.0V
= 0.4V
= 3mA
= 3.0V
t
HIGH
ISL12058
t
LOW
t
HD:DAT
t
R
t
AA
t
DH
t
BUF
t
SU:STO
June 15, 2009
FN6756.0