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RV5C386A Datasheet(PDF) 3 Page - RICOH electronics devices division

Part No. RV5C386A
Description  I2C-bus Real-Time Clock ICs with Voltage Monitoring Function
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Maker  RICOH [RICOH electronics devices division]
Homepage  http://www.ricoh.com
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RV5C386A Datasheet(HTML) 3 Page - RICOH electronics devices division

 
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PRELIMINARY
RV5C386A
12345
- 3 -
5.
PIN DESCRIPTION
Symbol
Item
Description
SCL
Serial
Clock Line
The SCL pin is used to input clock pulses synchronizing the input and output
of data to and from the SDA pin. Allows a maximum input voltage of 5.5
volts regardless of supply voltage.
SDA
Serial
Data Line
The SDA pin is used to input or output data intended for writing or reading in
synchronization with the SCL pin. Up to 5.5v beyond VDD may be input.
This pin functions as an Nch open drain output.
/INTRA
Interrupt
Output A
The /INTRA pin is used to output periodic interrupt signals to the CPU and
alarm interrupt (Alarm_D) signals.
Disabled at power-on from 0 volts.
Nch.
open drain output.
/INTRB
Interrupt
Output B
The /INTRB pin is used to output alarm interrupt (Alarrm_W) signals to the
CPU.
Disabled at power-on from 0 volts.
Nch. open drain output.
32KOUT
32kHz Clock
Output
The 32KOUT pin is used to output 32.768-kHz clock pulses.
Enabled at
power-on from 0 volts. CMOS output.
The output is disabled if the CLKC pin
is set to Low or open.
CLKC
Clock control
input
The CLKC pin is used to control output of the 32KOUT pin.
The clock output
is disabled and held low when the pin is set to low or open.
Incorporates a
pull-down resistor.
OSCIN
OSCOUT
Oscillation
Circuit
Input / Output
The OSCIN and OSCOUT pins are used to connect the 32.768-kHz crystal
oscillator (with all other oscillation circuit components built into the
RV5C386A).
VDD
VSS
Positive Power
Supply Input
Negative Power
Supply Input
The VDD pin is connected to the power supply.
The VSS pin is grounded.
6.
ABSOLUTE MAXIMUM RATINGS
(VSS=0V)
Symbol
Item
Pin Name
Description
Unit
VDD
Supply Voltage
-0.3 to +6.5
V
VI
Input Voltage
SCL, SDA, CLKC
-0.3 to +6.5
V
Output Voltage 1
SDA, /INTRA, /INTRB
-0.3 to +6.5
V
VO
Output Voltage 1
32KOUT
-0.3 to VDD+0.3
V
PD
Power Dissipation
Topt = 25
°C
300
mW
Topt
Operating Temperature
-40 to +85
°C
Tstg
Storage Temperature
-55 to +125
°C
7.
RECOMMENDED OPERATING CONDITIONS
(VSS=0V, Topt=-40 to +85
°C)
Symbol
Item
Pin Name
Min,
Typ.
Max.
Unit
VDD
Supply Voltage
2.0
5.5
V
VCLK
Timekeeping Voltage
1.45
5.5
V
fXT
Oscillation Frequency
32.768
kHz
VPUP
Pull-up Voltage
SCL, SDA, /INTRA,
/INTRB
5.5
V


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