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3
FN8085.3
July 29, 2005
Absolute Maximum Ratings
Voltage on V
DD
, V
BAT
, SCL, SDA, and IRQ pins
(respect to ground) . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7.0V
Voltage on X1 and X2 pins
(respect to ground) . . . . . . . . . . . .-0.5V to V
DD
+ 0.5 (V
DD
Mode)
-0.5V to V
BAT
+ 0.5 (V
BAT
Mode)
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Lead Temperature (Soldering, 10s) . . . . . . . . . . . . . . . . . . . . . 300°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
DC Operating Characteristics – RTC
Temperature = -40°C to +85°C, unless otherwise stated.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
(Note 4)
MAX
UNITS
NOTES
V
DD
Main Power Supply
2.7
5.5
V
V
BAT
Battery Supply Voltage
1.8
5.5
V
I
DD1
Supply Current
V
DD
= 5V
2
6
µA
1, 2
V
DD
= 3V
1.2
4
µA
I
DD2
Supply Current With I
2
C Active
V
DD
= 5V
40
120
µA
1, 2
I
DD3
Supply Current (Low Power Mode)
V
DD
= 5V, LPMODE = 1
1.4
5
µA
1
I
BAT
Battery Supply Current
V
BAT
= 3V
400
950
nA
1
I
LI
Input Leakage Current on SCL
100
nA
I
LO
I/O Leakage Current on SDA
100
nA
V
TRIP
V
BAT
Mode Threshold
1.6
2.2
2.6
V
V
TRIPHYS
V
TRIP
Hysteresis
10
30
75
mV
V
BATHYS
V
BAT
Hysteresis
15
50
100
mV
IRQ/F
OUT
V
OL
Output Low Voltage
V
DD
= 5V
I
OL
= 3mA
0.4
V
V
DD
= 2.7V
I
OL
= 1mA
0.4
V
Power-Down Timing
Temperature = -40°C to +85°C, unless otherwise stated.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
(Note 4)
MAX
UNITS
NOTES
V
DD SR-
V
DD
Negative Slewrate
10
V/ms
3
Serial Interface Specifications
Over the recommended operating conditions unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
(Note 4)
MAX
UNITS
NOTES
SERIAL INTERFACE SPECS
V
IL
SDA and SCL input buffer LOW
voltage
-0.3
0.3 x
V
DD
V
V
IH
SDA and SCL input buffer HIGH
voltage
0.7 x
V
DD
V
DD
+
0.3
V
Hysteresis
SDA and SCL input buffer hysteresis
0.05 x
V
DD
V
V
OL
SDA output buffer LOW voltage,
sinking 3mA
0
0.4
V
ISL1208