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參數(shù)資料
| 型號： | R2061K |
| 英文描述： | real-time clock ICs |
| 中文描述： | 實(shí)時(shí)時(shí)鐘IC |
| 文件頁數(shù)： | 3/48頁 |
| 文件大?。?/td> | 322K |
| 代理商： | R2061K |
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R2061 Series
12345
Rev.1.00 - 3 -
I
PIN DESCRIPTION
Symbol
CE
Item
Chip enable
Input
Description
The CE pin is used for interfacing with the CPU. Should be held high to allow
access to the CPU. Incorporates a pull-down resistor. Should be held low
or open when the CPU is powered off. Allows a maximum input voltage of
5.5 volts regardless of supply voltage.
The SCLK pin is used to input clock pulses synchronizing the input and
output of data to and from the SIO pin. Allows a maximum input voltage of
5.5 volts regardless of supply voltage.
The SIO pin is used to input or output data intended for writing or reading in
synchronization with the SCLK pin.
The /INTR pin is used to output alarm interrupt (Alarm_W) and alarm interrupt
(Alarm_D) and output periodic interrupt signals to the CPU signals. Disabled
at power-on from 0V. Nch. open drain output.
Supply power to the IC.
SCLK
Serial
Clock Input
SIO
Serial
Input / Output
Interrupt
Output
/INTR
VCC
Main Battery
input
Power Supply
Input for Backup
Battery
Oscillation
Circuit
Input / Output
Positive Power
Supply Input
VSB
Connect a primary battery for backup. Normally, power is supplied from VCC
to the IC. If VCC level is equal or less than –VDET1, power is supplied from
this pin.
The OSCIN and OSCOUT pins are used to connect the 32.768-kHz crystal
oscillator (with all other oscillation circuit components built into the R2061K
series).
The VDD pin is connected to the power supply. Connect a capacitor as much
as 0.1
μ
F between VDD and VSS. In the case of using a secondary battery,
connecting the secondary battery to this pin is possible.
While monitoring VCC Power supply, if the voltage is equal or lower than
–VDET1, this output level is “L”. When /VDCC becomes “L”, SW1 turns off
and SW2 turns on. As a result, power is supplied from VSB pin to the internal
real time clock. When VCC is equal to +VDET1 or more, SW1 turns on and
SW2 turns off. After t DELAY passed, /VDCC output becomes off, or “H”.
Nch Open-drain output.
To stabilize the internal reference, connect a capacitor as much as 0.1uF
between this pin and VSS.
The VSS pin is grounded.
OSCIN
OSCOUT
VDD
/VDCC
VCC Power
Supply Monitoring
Result Output
CIN
Noise Bypass Pin
VSS
Negative Power
Sup Supply Input
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R2061K01-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:wire interface Real-Time Clock ICs with Battery Backup switch-over Function |
| R2061K03-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:wire interface Real-Time Clock ICs with Battery Backup switch-over Function |
| R2061S02-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:wire interface Real-Time Clock ICs with Battery Backup switch-over Function |
| R2062 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:3 wire interface Real-Time Clock ICs with Battery Backup switch-over Function |
| R2062K01-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:3 wire interface Real-Time Clock ICs with Battery Backup switch-over Function |
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