參數(shù)資料
型號(hào)： R2023T
廠商： Ricoh Co., Ltd.
英文描述： 2-wire Serial Interface Real Time Clock IC
中文描述： 2線串行接口實(shí)時(shí)時(shí)鐘芯片
文件頁(yè)數(shù)： 13/50頁(yè)
文件大?。?/td> 512K
代理商： R2023T
R2023K/T
(5) CT2, CT1, and CT0
CT2
13
Periodic Interrupt Selection Bits
CT0
Wave form
mode
0
-
1
-
0
Pulse Mode
*1)
1
Pulse Mode
*1)
0
Level Mode
*2)
1
Level Mode
*2)
0
Level Mode
*2)
1
Level Mode
*2)
Description
Interrupt Cycle and Falling Timing
CT1
0
0
0
0
0
1
OFF(H)
Fixed at “L”
2Hz (Duty50%)
(Default)
0
1
1Hz (Duty50%)
1
0
Once per 1 second (Synchronized with
second counter increment)
Once per 1 minute (at 00 seconds of
every minute)
Once per hour (at 00 minutes and 00
seconds of every hour)
Once per month (at 00 hours, 00
minutes,
and 00 seconds of first day of every
month)
1
0
1
1
1
1
* 1) Pulse Mode: 2-Hz and 1-Hz clock pulses are output in synchronization with the increment of the second
counter as illustrated in the timing chart below.
INTRA Pin
Rewriting of the second counter
CTFG Bit
Approx. 92
μ
s
(Increment of second counter)
In the pulse mode, the increment of the second counter is delayed by approximately 92
μ
s from the falling
edge of clock pulses. Consequently, time readings immediately after the falling edge of clock pulses may
appear to lag behind the time counts of the real-time clocks by approximately 1 second. Rewriting the
second counter will reset the other time counters of less than 1 second, driving the INTRA pin low.
* 2) Level Mode: Periodic interrupt signals are output with selectable interrupt cycle settings of 1 second, 1
minute, 1 hour, and 1 month. The increment of the second counter is synchronized with the falling edge of
periodic interrupt signals. For example, periodic interrupt signals with an interrupt cycle setting of 1 second
are output in synchronization with the increment of the second counter as illustrated in the timing chart below.
CTFG Bit
(Increment of
second counter)
Setting CTFG bit to 0
Setting CTFG bit to 0
(Increment of
second counter)
(Increment of
second counter)
INTRA Pin
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
R2023T-E2 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:2-wire Serial Interface Real Time Clock IC
R2-0257-02 制造商:Southco 功能描述:
R2-0259-02 制造商:Southco 功能描述:
R2025D 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:High precision I2C-Bus Real-Time Clock Module
R2025S 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:High precision I2C-Bus Real-Time Clock Module
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