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F15353G 参数 Datasheet PDF下载

F15353G图片预览
型号: F15353G
PDF下载: 下载PDF文件 查看货源
内容描述: 2线实时时钟 [2-wire Real-time Clock]
分类和应用: 时钟
文件页数/大小: 38 页 / 996 K
品牌: FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
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Feature Integration Technology Inc.  
Fintek  
F15353  
If INT1# or INT2# pin output mode is set as the per-minute steady interrupt, INT1# or INT2# will pull low as the  
first minute carry is performed. The data is set in register_2. A whole cycle of clock is 1 minute (50% duty) is  
output from INT1# or INT2# pin.  
Ex:  
32kE=0, INT1AE=0 (INT1# pin output mode) INT2AE=0 (INT2# pin output mode)  
Change by the program (OFF)  
INT1ME, INTFE/  
INT2ME, INT2FE  
Minute Carrying Processing  
Minute Carrying Processing  
INT1# pin/INT2# pin  
30s  
30s  
30s  
30s  
30s  
30s  
30s  
30s  
If the period is less than  
123us, "L" signal is output  
If the period is more  
than123us, "H" signal is  
output. "L" signal is output  
Figure 6: Timing of Pre-minute Steady Interrupt Output1  
6.5.5 Per-minute steady interrupt output2 (INT1# pin output mode only)  
If INT1# or INT2# pin output mode is set as the per-minute steady interrupt, INT1# will pull low as the first  
minute carry is performed. The output is the period of 7.9ms in synchronization with the minute carry processing  
inside the IC. However, when real-time data is read, the minute carry processing is delayed by a maximum of  
0.5 s and accordingly lowoutputfromthe INT1# pin is also delayed by 0.5s maximum. When the second data is  
rewritten by a real-time data write command, counting starts from the rewritten second data and as a result, the  
output interval during that period may become either longer or shorter.  
V0.12P  
16