X1243 Datasheet, PDF (12/17 Pages) Xicor Inc. – Real Time Clock/Calendar/Alarm with EEPROM

X1243
ABSOLUTE MAXIMUM RATINGS COMMENT
Temperature under bias . . . . . . . . . . . . . . . . . . . . . -65°C to +135°C
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Voltage on any pin
with respect to ground . . . . . . . . . . . . . . . . . . . . . . . -1.0V to 7.0V
DC output current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 mA
Lead temperature (soldering, 10 seconds) . . . . . . . . . . . . . . . 300°C
CAUTION: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.This is a stress rating only; functional operation
of the device (at these or any other conditions above those indicated in the operational sections of this specifcation is not implied
DC OPERATING CHARACTERISTICS Temperature (-40°C to +85°C, unless otherwise stated.)
SYMBOL
PARAMETER
CONDITION
MIN
TYP
MAX
UNIT
V_CC
V_BACK
V_CB
V_BC
I_CC1
Main Power Supply
Backup Power Supply
Switch to Backup Supply
Switch to Main Supply
Supply Current
I_CC2
I_CC3
I_BACK1
Supply Current (External
crystal network)
Program Supply Current
(nonvolatile)
Timekeeping Current
I_BACK2
I_LI
I_LO
V_IL
Timekeeping Current
(External crystal network)
Input Leakage Current
Output Leakage Current
Input LOW Voltage
V_IH
Input HIGH Voltage
V_OL
Output LOW Voltage
V_CC = 2.7V
V_CC = 5.5V
V_CC = 2.7V
V_CC = 5.5V
V_CC = 2.7V
V_CC = 5.5V
V_BACK = 1.8V
V_BACK = 5.5V
V_BACK= 1.8V
V_BACK= 5.5V
2.7V
5.5V
2.7
1.8
V_BACK - 0.2
V_BACK
-0.5
V_CC x 0.7 or
V_BACK x 0.7
5.5
V
5.5
V
V_BACK - 0.1
V
V_BACK + 0.1
1.2
µA
1.7
µA
3.8
5
7.5
15
µA
1.5
µA
3.0
µA
1.0
µA
1.5
µA
1.6
3
µA
7.5
15
µA
10
µA
10
µA
V_CC x 0.3 or
V
V_BACK x 0.3
V_CC + 0.5 V_BACK V
+ 0.5
0.4
V
0.4
NOTES:
1. The device enters the Program state 200ns after a stop ending a write operation and continues for tWC.
2. Periodically sampled and not 100% tested.
3. V_IL = V_CC x 0.1, V_IH = V_CC x 0.9, f_SCL = 400kHz, SDA = Open
4. V_CC = 0V.
5. V_BACK= 0V.
6. V_SDA = V_SCL = V_BACK, Others = GND or V_BACK
7. V_SDA = GND to V_CC, V_CLK = GND or V_CC
8. IOL = 3.0mA at 5V, 1.5mA at 1.8V
9. Threshold voltages based on the higher of V_CC or V_BACK.
10. Driven by external 32.768kHz square wave oscillator on X1, X2 open.
11. Using recommended crystal and oscillator network applied to X1 and X2 (25°C).
NOTES
2
2
3, 5, 10
2, 3, 5, 11
1, 3, 5, 10
2, 4, 6, 10
2, 4, 6, 11
7
7
2, 9
2, 9
8
12
FN8249.0
April 28, 2005