Feature Integration Technology Inc.
Fintek
F15353
6.4 Invalid Date Process
When the real time data is written, the invalid data will be corrected immediately as Table 2.
Table 2: Process of Invalid Date
Register
Year data
Normal Data
00 to 99
01 to 12
01 to 31
0 to 6
Error Data
XA to XF, AX to FX
00, 13 to 19, XA to XF
00, 32 to 39, XA to XF
7
Result
00
Month data
Day data
01
01
Day of week data
Hour data*1
(24-hour)
0
0 to 23
0 to 11
24 to 29, 3X, XA to XF
12 to 19, 2X, 3X, XA to XF
60 to 79, XA to XF
00
00
00
00
(12-hour)
Minute data
Second data
00 to 59
00 to 59
60 to 79, XA to XF
*1 For 12-hour expression, setting AM/PM flag, and the flag is ignored in 24-hour expression. “0” for 0 to 11
o’clock and “1” for 12 to 23 o’clock are read in a read operation.
6.5 Interrupt Function
The INT1# pin output mode is selected by the INT1AE, INT1ME, and INT1FE flags of the status register02. The
INT2# pin output mode is selected by the INT2AE, INT2ME, and INT2FE flags of the status register02, similarly.
6.5.1 Alarm Interrupt Output
If the INT1# or INT2# pin output mode is set to the alarm setting, the INT1# or INT2# pin will pull low as the set
data reached. The set data, the day of week, the hour, and the minute, are stored in INT1 register_1 (command
100b) or INT1 register_2 (command 101b). To Rewrite INT1AE or INT2AE of status register_2 to “0” will release
the output from low to high.
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