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
specification is not implied. Exposure to absolute max-
imum 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
VCC
Parameter
Conditions
Min
2.7
Typ
Max
5.5
Unit
V
Notes
Main Power Supply
Backup Power Supply
Switch to Backup Supply
Switch to Main Supply
VBACK
VCB
1.8
5.5
V
VBACK -0.2
VBACK
VBACK -0.1
VBACK +0.2
V
VBC
V
OPERATING CHARACTERISTICS
Symbol
Parameter
Conditions
VCC = 2.7V
VCC = 5.0V
VCC = 2.7V
VCC = 5.0V
VCC = 2.7V
VCC = 5.0V
VBACK = 1.8V
Min
Typ
Max
400
800
2.5
3.0
10
Unit
µA
Notes
ICC1
Read Active Supply
Current
1, 5, 7, 14
µA
ICC2
Program Supply Current
(nonvolatile)
mA
mA
µA
2, 5, 7, 14
ICC3
Main Timekeeping
Current
3, 7, 8, 14, 15
20
µA
IBACK
Timekeeping Current –
(Low Voltage Sense and
Watchdog Timer disabled
1.25
1.5
µA
3, 6, 9, 14, 15
“See Perfor-
mance Data”
VBACK = 3.3V
µA
ILI
Input Leakage Current
Output Leakage Current
Input LOW Voltage
10
10
µA
µA
V
10
10
13
ILO
VIL
-0.5
VCC x 0.2 or
VBACK x 0.2
VIH
Input HIGH Voltage
VCC x 0.7 or
VBACK x 0.7
V
CC + 0.5 or
V
V
V
13
13
11
VBACK + 0.5
VHYS
VOL1
Schmitt Trigger Input
Hysteresis
VCC related level .05 x VCC or
.05 x VBACK
Output LOW Voltage for
SDA and RESET
VCC = 2.7V
VCC = 5.5V
VCC = 2.7V
VCC = 5.5V
0.4
0.4
VOL2
Output LOW Voltage for
PHZ/IRQ
VCC x 0.3
VCC x 0.3
V
V
11
12
VOH2
Output HIGH Voltage for
PHZ/IRQ
VCC = 2.7V
VCC = 5.5V
VCC x 0.7
VCC x 0.7
Notes: (1) The device enters the Active state after any start, and remains active: for 9 clock cycles if the Device Select Bits in the Slave Address
Byte are incorrect or until 200nS after a stop ending a read or write operation.
(2) The device enters the Program state 200nS after a stop ending a write operation and continues for tWC
.
FN8102.3
4
April 14, 2006