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RF5C01A Datasheet(PDF) 3 Page - RICOH electronics devices division

Part # RF5C01A
Description  REAL-TIME CLOCK WITH INTERNAL RAM
PDF  10 Pages
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Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division

RF5C01A Datasheet(HTML) 3 Page - RICOH electronics devices division

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RP/RF5C01A
3
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
Symbol
Item
Conditions
Ratings
Unit
VCC
Supply Voltage
–0.3 to 7.0
V
VI
Input Voltage
–0.3 to VCC+0.3
V
VO
Output Voltage
–0.3 to VCC+0.3
V
Pd
Maximum Power Dissipation
Ta=25˚C
700
mW
Topr
Operating Temperature
0 to 70
˚C
Tstg
Storage Temperature
–40 to 125
˚C
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
VCC
Supply Voltage
4.75
5
5.25
V
VDH
Data Preservation Voltage
2.2
5.25
V
fXT
Crystal Oscillation Frequency
32.768
kHz
Referenced at GND pin
(Unless otherwise specified, Ta=0 to 70˚C)
DC ELECTRICAL CHARACTERISTICS
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
VIH
“H” Input Voltage (excluding OSCIN)
2.0
Vcc
V
“H” Input Voltage (OSCIN)
4.0
Vcc
V
VIL
“L” Input Voltage (excluding OSCIN)
–0.3
0.8
V
“L” Input Voltage (OSCIN)
–0.3
0.5
V
VOH
“H” Output Voltage
IOH=–400µA
2.4
V
VOL
“L” Output Voltage
IOL=2mA
0.4
V
II
Input Voltage
VI=0 to 5.25V
±10
µA
IOZ
Output Off-state Leakage Current
±10
µA
ICC1
Supply Current for backup
fXT=32.768kHz, Vcc=2.2V
15
µA
ICC2
Operating Supply Current
fXT=32.768kHz, Vcc=5.0V*2
250
µA
(Unless otherwise specified, Ta=0 to 70˚C, Vcc=5V±10%)
*1) Plus (without sign) direction of current is assumed to be the direction flowing into IC.
*2) When connected to CPU (Read/Write cycle 10µs)
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under
any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation
above these absolute maximum ratings may cause degradation or permanent damage to the device. These
are stress ratings only and do not necessarily imply functional operation below these limits.



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