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R2023K Datasheet(PDF) 42 Page - RICOH electronics devices division

Part # R2023K
Description  2-wire Serial Interface Real Time Clock IC
PDF  50 Pages
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Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division

R2023K Datasheet(HTML) 42 Page - RICOH electronics devices division

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R2023K/T
42
• 32-kHz CLOCK OUTPUT
For the R2023K/T, 32.768-kHz clock pulses are output from the 32KOUT pin when either the CLEN1 bit in the
Control Register 2 or the CLEN2 bit in the Control Register 1 is set to 0 when the CLKC pin is set to high.
If the
condition is not satisfied, the output is set to low.
CLEN1
(D3 at Address Fh)
CLEN2
(D4 at Address Eh)
CLKC pin input
32KOUT PIN
(CMOS push-pull output)
1
1
*
*
*
0
“L”
0(Default)
*
1
*
0(Default)
1
Clock pulses
The 32KOUT pin output is synchronized with the CLEN1 and CLEN2 bit and CLKC pin settings as
illustrated in the timing chart below.
32KOUT PIN
Max.62.0
µs
CLKC pin or CLEN1 or
CLEN2 bit setting



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