isl12057 Intersil Corporation, isl12057 Datasheet - Page 5

• Manufacturer Part Number: isl12057
• Description: Low Cost And Low Power I 2c Rtc Real Time Clock/calendar
• Manufacturer: Intersil Corporation

Serial Interface Specifications
NOTES:
10. Specified at +25°C.
4. IRQ1/F
5. Typical values are for T = +25°C and 3.3V supply voltage.
6. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
7. Limits should be considered typical and are not production tested.
8. These are I
9. Parts will work with SDA pull-up voltage above the V
SYMBOL
t
t
t
t
t
t
HD:DAT
SU:STO
HD:STO
SU:STA
HD:STA
SU:DAT
t
t
t
HIGH
LOW
Rpu
t
and are not production tested.
specification.
BUF
Cb
DH
t
t
R
F
OUT
Time the Bus Must Be Free
Before the Start of a New
Transmission
Clock LOW Time
Clock HIGH Time
START Condition Setup Time
START Condition Hold Time
Input Data Setup Time
Input Data Hold Time
STOP Condition Setup Time
STOP Condition Hold Time
Output Data Hold Time
SDA and SCL Rise Time
SDA and SCL Fall Time
Capacitive Loading of SDA or SCL Total on-chip and off-chip
SDA and SCL Bus Pull-Up
Resistor Off-Chip
2
inactive.
C specific parameters and are not production tested, however, they are used to set conditions for testing devices to validate
PARAMETER
5
Over the recommended operating conditions unless otherwise specified. (Continued)
SDA crossing 70% of V
STOP condition, to SDA crossing 70%
of V
condition
Measured at the 30% of V
Measured at the 70% of V
SCL rising edge to SDA falling edge.
Both crossing 70% of V
From SDA falling edge crossing 30% of
V
of V
From SDA exiting the 30% to 70% of
V
crossing 30% of V
From SCL falling edge crossing 30% of
V
of V
From SCL rising edge crossing 70% of
V
of V
From SDA rising edge to SCL falling
edge. Both crossing 70% of V
From SCL falling edge crossing 30% of
V
of V
From 30% to 70% of V
From 70% to 30% of V
Maximum is determined by t
For Cb = 400pF, max is about
2kΩ to~2.5kΩ.
For Cb = 40pF, max is about 15kΩ to
~20kΩ
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
, to SDA rising edge crossing 30%
, until SDA enters the 30% to 70%
to SCL falling edge crossing 70%
window, to SCL rising edge
to SDA entering the 30% to 70%
during the following START
window
window
PULLUP
TEST CONDITIONS
limit but the t
ISL12057
DD
DD
DD
DD
DD
DD
DD
during a
R
crossing
crossing
DD
AA
and t
and t
F
F
in the I
20 + 0.1 x Cb
20 + 0.1 x Cb
(Note 6)
1300
1300
MIN
600
600
600
100
600
600
10
2
0
0
1
C parameters are not guaranteed.
(Note 5)
TYP
(Note 6)
MAX
400
900
300
300
UNITS NOTES
kΩ
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
June 15, 2009
7, 8, 9
FN6755.0
7, 8
7, 8
7, 8