參數(shù)資料
型號(hào)： RV5C387A
廠商： RICOH COMPANY LTD
元件分類： XO, clock
英文描述： I2C-bus Real-Time Clock ICs with Voltage Monitoring Function
中文描述： 0 TIMER(S), REAL TIME CLOCK, PDSO10
封裝： 4 X 2.90 MM, 1.20 MM HEIGHT, SSOP-10
文件頁(yè)數(shù)： 3/42頁(yè)
文件大?。?/td> 363K
代理商： RV5C387A
PRELIMINARY RV5C387A
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5. PIN DESCRIPTION
Symbol
SCL
Item
Description
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.
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.
The /INTRA pin is used to output periodic interrupt signals to the CPU.
Disabled at power-on from 0 volts. Nch. open drain output.
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.
The /INTRC pin is used to output alarm interrupt (Alarm_D) signals to the
CPU. Disabled at power-on from 0 volts. Nch. open drain output.
The 32KOUT pin is used to output 32.768-kHz clock pulses. Enabled at
power-on from 0 volts. Nch. open drain output. The RV5C387A is designed
to disable 32-kHz clock output in response to a command from the host
computer.
The OSCIN and OSCOUT pins are used to connect the 32.768-kHz crystal
oscillator (with all other oscillation circuit components built into the
RV5C387A).
The VDD pin is connected to the power supply.
SDA
Serial
Data Line
/INTRA
Interrupt
Output A
Interrupt
Output B
Interrupt
Output C
32kHz Clock
Output
/INTRB
/INTRC
32KOUT
OSCIN
OSCOUT
Oscillation
Circuit
Input / Output
Positive Power
Supply Input
Negative Power
Supply Input
VDD
VSS
The VSS pin is grounded.
6. ABSOLUTE MAXIMUM RATINGS
(VSS=0V)
Unit
V
V
V
Symbol
VDD
VI
VO
Item
Pin Name
Description
Supply Voltage
Input Voltage
Output Voltage
-0.3 to +6.5
-0.3 to +6.5
-0.3 to +6.5
SCL, SDA
32KOUT, SDA, /INTRA,
/INTRB, /INTRC
Topt = 25
°
C
PD
Topt
Tstg
Power Dissipation
Operating Temperature
Storage Temperature
300
-40 to +85
-55 to +125
mW
°
C
°
C
7. RECOMMENDED OPERATING CONDITIONS
(VSS=0V, Topt=-40 to +85
°
C)
Min,
Typ.
2.0
1.45
32.768
Symbol
VDD
VCLK
fXT
VPUP
Item
Pin Name
Max.
5.5
5.5
Unit
V
V
kHz
V
Supply Voltage
Timekeeping Voltage
Oscillation Frequency
Pull-up Voltage
SCL, SDA, /INTRA,
/INTRB, /INTRC
5.5
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