Preliminary Information
X1288
ABSOLUTE MAXIMUM RATINGS
Temperature Under Bias ................... -65°C to +135°C
Storage Temperature......................... -65°C to +150°C
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and the functional operation
of the device at these or any other conditions above
those indicated in the operational sections of this spec-
ification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect
device reliability.
Voltage on V , V
and PHZ/IRQ
CC BACK
pin (respect to ground)............................-0.5V to 7.0V
Voltage on SCL, SDA, X1 and X2
pin (respect to ground)............... -0.5V to 7.0V or 0.5V
above V or V
(whichever is higher)
CC
BACK
DC Output Current .............................................. 5 mA
Lead Temperature (Soldering, 10 sec) ...............300°C
DC OPERATING CHARACTERISTICS (Temperature = -40°C to +85°C, unless otherwise stated.)
Symbol
Parameter
Conditions
Min
2.7
Typ
Max
5.5
Unit
V
Notes
V
Main Power Supply
Backup Power Supply
Switch to Backup Supply
Switch to Main Supply
CC
V
1.8
5.5
V
BACK
V
V
V
-0.2
V
-0.1
V
CB
BC
BACK
BACK
V
V
+0.2
V
BACK
BACK
OPERATING CHARACTERISTICS
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
µA
Notes
I
I
I
Read Active Supply
Current
V
V
V
V
V
V
= 2.7V
= 5.0V
= 2.7V
= 5.0V
= 2.7V
= 5.0V
400
800
2.5
3.0
10
1, 5, 7, 14
CC1
CC2
CC3
CC
CC
CC
CC
CC
CC
µA
Program Supply Current
(nonvolatile)
mA
mA
µA
2, 5, 7, 14
Main Timekeeping
Current
3, 7, 8, 14, 15
20
µA
I
Timekeeping Current –
(Low Voltage Sense and
Watchdog Timer dis-
abled
V
= 1.8V
1.25
1.5
µA
3, 6, 9, 14, 15
“See Perfor-
mance Data”
BACK
BACK
V
= 3.3V
µA
BACK
I
Input Leakage Current
Output Leakage Current
Input LOW Voltage
10
µA
µA
V
10
10
13
LI
I
10
LO
V
-0.5
V
V
x 0.2 or
CC
IL
x 0.2
BACK
V
Input HIGH Voltage
V
V
x 0.7 or
V + 0.5 or
CC
BACK
V
V
V
13
13
11
IH
CC
x 0.7
V
+ 0.5
BACK
V
Schmitt Trigger Input
Hysteresis
V
related level .05 x V or
HYS
CC CC
.05 x V
BACK
V
V
Output LOW Voltage for
SDA and RESET
V
V
V
V
V
V
= 2.7V
= 5.5V
= 2.7V
= 5.5V
= 2.7V
= 5.5V
0.4
0.4
OL1
OL2
OH2
CC
CC
CC
CC
CC
CC
Output LOW Voltage for
PHZ/IRQ
V
x 0.3
V
V
11
12
CC
CC
V
x 0.3
V
Output HIGH Voltage for
PHZ/IRQ
V
V
x 0.7
x 0.7
CC
CC
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REV 1.1.30 3/24/04
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