isl1220 Intersil Corporation, isl1220 Datasheet - Page 5

• Manufacturer Part Number: isl1220
• Description: Low Power Rtc With 8 Bytes Of Battery Backed Sram And Separate Fout
• Manufacturer: Intersil Corporation

SDA vs SCL Timing
Symbol Table
WAVEFORM
(OUTPUT TIMING)
(INPUT TIMING)
SDA
SCL
SDA
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
t
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
t
SU:DAT
t
HIGH
ISL1220
t
LOW
t
HD:DAT
t
R
t
AA
t
DH
t
BUF
t
SU:STO
June 22, 2006
FN6315.0