FM31272 View Datasheet(PDF) - Ramtron International Corporation
Part Name
Description
MFG CO.
'FM31272' PDF : 26 Pages View PDF
FM31278/276/274/272 - 5V I2C Companion
Electrical Specifications
Absolute Maximum Ratings
Symbol
VDD
VIN
VBAK
TSTG
TLEAD
VESD
Description
Power Supply Voltage with respect to VSS
Voltage on any signal pin with respect to VSS
Backup Supply Voltage
Storage Temperature
Lead Temperature (Soldering, 10 seconds)
Electrostatic Discharge Voltage
- Human Body Model (JEDEC Std JESD22-A114-B)
- Charged Device Model (JEDEC Std JESD22-C101-A)
Package Moisture Sensitivity Level
Ratings
-1.0V to +7.0V
-1.0V to +7.0V * and
VIN ≤ VDD+1.0V **
-1.0V to +4.5V
-55°C to + 125°C
300° C
3kV
1kV
MSL-1
* PFI input voltage must not exceed 4.5V.
** The “VIN < VDD+1.0V” restriction does not apply to the SCL and SDA inputs which do not employ a diode to VDD.
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 listed in the operational section of this
specification is not implied. Exposure to absolute maximum ratings conditions for extended periods may affect device reliability.
DC Operating Conditions (TA = -40° C to + 85° C, VDD = 4.0V to 5.5V unless otherwise specified)
Symbol
VDD
IDD
Parameter
Main Power Supply
VDD Supply Current
@ SCL = 100 kHz
@ SCL = 400 kHz
@ SCL = 1 MHz
Min
Typ
Max
4.0
5.5
500
900
1500
ISB
Standby Current
150
Units
V
µA
µA
µA
µA
Notes
7
1
2
VBAK
IBAK
IBAKTC
VTP1
VTP2
VRST
ILI
ILO
VIL
VIH
VOL
VOH
RRST
RTC Backup Supply Voltage
RTC Backup Supply Current
Trickle Charge Current with VBAK=0V
Fast Charge Off (FC = 0)
Fast Charge On (FC = 1)
VDD Trip Point Voltage, VTP = 0
VDD Trip Point Voltage, VTP = 1
VDD for valid /RST @ IOL = 80 µA at VOL
VBAK > VBAK min
VBAK < VBAK min
Input Leakage Current
Output Leakage Current
Input Low Voltage
All inputs except those listed below
CNT1-2 battery backed (VDD < 2.5V)
CNT1-2 (VDD > 2.5V)
Input High Voltage
All inputs except those listed below
PFI (comparator input)
CNT1-2 battery backed (VDD < 2.5V)
CNT1-2 VDD > 2.5V
Output Low Voltage (IOL = 3 mA)
Output High Voltage (IOH = -2 mA)
Pull-up Resistance for /RST Inactive
2.0
3.0
3.75
V
9
1
µA
4
10
50
-
120
µA
200
-
2500
µA
3.80
3.9
4.00
V
5
4.25
4.4
4.50
V
5
6
0
V
1.6
V
±1
µA
3
±1
µA
3
-0.3
0.3 VDD
V
8
-0.3
0.5
V
-0.3
0.8
V
0.7 VDD
-
VBAK – 0.5
0.7 VDD
-
2.4
50
VDD + 0.3
3.75
VBAK + 0.3
VDD + 0.3
0.4
-
400
Continued
V
V
V
V
V
V
KΩ
»
Rev. 2.0
Dec. 2007
Page 20 of 25
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