參數(shù)資料
型號(hào)： RS5C372A
廠商： RICOH COMPANY LTD
元件分類： XO, clock
英文描述： I2C bus SERIAL INTERFACE REAL-TIME CLOCK ICs
中文描述： 0 TIMER(S), REAL TIME CLOCK, PDSO8
封裝： SSOP-8
文件頁(yè)數(shù)： 7/59頁(yè)
文件大小： 442K
代理商： RS5C372A
RS5C372A
3
PIN DESCRIPTIONS
Pin No.
Symbol
Name
Description
2
SCL
Serial Clock Line
This pin is used to input shift clock pulses to synchronize data input/output to and
from the SDA pin with this clock. Up to 6V beyond V
DD
may be input.
3
SDA
Serial Data Line
This pin inputs and outputs written or read data in synchronization with shift clock
pulses from the SCL pin. Up to 6V beyond V
DD
may be input. This pin functions
as an Nch open drain output.
5
INTRA
Interrupt Output A
This pin outputs periodic interrupt pulses and alarm interrupt (Alarm_A, Alarm_B)
to the CPU. This pin is off when power is activated from 0V. This pin functions as
an Nch open drain output.
1
INTRB
Interrupt Output B
This pin outputs 32.768kHz clock pulses (when 32.768kHz crystal is used), period-
ic interrupt pulses to the CPU or alarm interrupt (Alarm_B). It outputs 32.768kHz
when power source is activated from 0V. This pin functions as an Nch open drain
output.
7
6
OSCIN
OSCOUT
Oscillator Circuit
Input/Output
8
4
VDD
VSS
Positive Power Supply Input
Negative Power Supply Input
These pins configure an oscillator circuit by connecting a 32.768kHz or 32.000kHz
crystal oscillator between the OSCIN–OSCOUT pins.
(Any other oscillator circuit components are built into the RS5C372A.)
The VDD pin is connected to the positive power supply and VSS to the ground.
ABSOLUTE MAXIMUM RATINGS
(Vss=0V)
Symbol
Item
Conditions
Ratings
Unit
V
DD
Supply Voltage
–0.3 to +7.0
V
V
I
Input Voltage
SCL, SDA
–0.3 to +7.0
V
V
O1
Output Voltage 1
SDA
–0.3 to +7.0
V
V
O2
Output Voltage 2
INTRA, INTRB
–0.3 to +12
P
D
Power Dissipation
Topt=25C
300
mW
Topt
Operating Temperature
–40 to +85
C
Tstg
Storage Temperature
–55 to +125
C
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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