參數(shù)資料
型號(hào)： RP5C62
廠商： RICOH COMPANY LTD
元件分類： XO, clock
英文描述： REAL-TIME CLOCK
中文描述： 1 TIMER(S), REAL TIME CLOCK, PDIP18
封裝： DIP-18
文件頁(yè)數(shù)： 17/48頁(yè)
文件大?。?/td> 419K
代理商： RP5C62
13
RP/RF/RS5C62
*
4) The 12-hour or 24-hour time scale must be selected before time of day adjustment or alarm time setting
(e.g. at the time of initialization after power-on from 0V)
D3
*
*
1
D2
D1
*
D0
*
0
LY
1
LY
0
(For write operation)
(For read operation)
(LY
1
,LY
0
)
Function
(0,0)
Any other value
Specifies leap year indication (including February 29) (when
the LYE bit is set to “0”.
Specifies normal year indication (not including February 29).
Leap year indication bits (intended for only read operation) *
2
Function
0
1
Enables leap year indication.
Disables leap year indication.
Leap year indication selection bit *
3,4
LYE
LYE
LYE
2.8 Leap Year Indication Register (BANK1 at “Bh”)
24-hour time scale 12-hour time scale 12-hour time scale 24-hour time scale
00
01
02
03
04
05
06
07
08
09
10
11
12 (AM12)
01 (AM 1)
02 (AM 2)
03 (AM 3)
04 (AM 4)
05 (AM 5)
06 (AM 6)
07 (AM 7)
08 (AM 8)
09 (AM 9)
10 (AM10)
11 (AM11)
12
13
14
15
16
17
18
19
20
21
22
23
32 (PM12)
21 (PM 1)
22 (PM 2)
23 (PM 3)
24 (PM 4)
25 (PM 5)
26 (PM 6)
27 (PM 7)
28 (PM 8)
29 (PM 9)
30 (PM10)
31 (PM11)
*
1) The bits marked with “
*
” are not intended for write operation.
*
2) The LY1 and LY0 bits cycle from “00” via “01” and “10” to “11” with the passage of years.
*
3) Upon setting the LYE bit to “0”, automatic correction is made for leap years in the years 1901 to 2099 (e.g. 1992, 1996, and 2000).
Upon setting the LYE bit to “1”, leap year indication is disabled (counting up to February 28).
*
4) Writing to the 1-year or 10-year counter enables leap year indication (sets the LYE bit to “0”).
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