參數(shù)資料
型號(hào)： S-35399A03-J8T2G
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： 1 TIMER(S), REAL TIME CLOCK, PDSO8
封裝： LEAD FREE, SOP-8
文件頁數(shù)： 15/53頁
文件大?。?/td> 472K
代理商： S-35399A03-J8T2G
2-WIRE REAL-TIME CLOCK
S-35399A03
Rev.2.0_00
Seiko Instruments Inc.
22
Correction of Nonexistent Data and End-of-Month
When users write the real-time data, the S-35399A03 checks it. In case that the data is invalid, the S-35399A03 does the
following procedures.
1. Processing of nonexistent data
Table 13 Processing of Nonexistent Data
Register
Normal Data
Nonexistent Data
Result
Year data
00 to 99
XA to XF, AX to FX
00
Month data
01 to 12
00, 13 to 19, XA to XF
01
Day data
01 to 31
00, 32 to 39, XA to XF
01
Day of week data
0 to 6
7
0
24-hour
0 to 23
24 to 29, 3X, XA to XF
00
Hour data
*1
12-hour
0 to 11
12 to 20, XA to XF
00
Minute data
00 to 59
60 to 79, XA to XF
00
Second data
*2
00 to 59
60 to 79, XA to XF
00
*1.
In a 12-hour expression, Write the
PM
/
AM
flag (B1 in hour data in the real-time data register).
In 24-hour expression, the
PM
/
AM
flag in the real-time data register is omitted. However in the flag in Read, users are
able to read 0; 0 to 11, 1; 12 to 23.
*2.
Processing of nonexistent data, regarding second data, is done by a carry pulse which is generated one sec after, after
Write. At this point the carry pulse is sent to the minute-counter.
2. Correction of end-of-month
A nonexistent day, such as February 30 and April 31, is set to the first day of the next month.
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