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TTP259-ASFN Datasheet(PDF) 37 Page - Tontek Design Technology |
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TTP259-ASFN Datasheet(HTML) 37 Page - Tontek Design Technology |
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37 / 81 page  Preliminary TTP259 TonTouch TM 2015/05/25 Page 37 of 81 Ver: 1.1 TCP1OV P-5: 20-bit Timer/Counter (TCP1 and TCP2 cascade) Two sets TCP can be cascaded to form a 20-bit timer/counter when TCP2 chooses TCP1OV as clock source (TCP2S1=1 and TCP2S0=1). In the 20-bit timer application, user should use TCP1EN to control the starting or stopping counting of 20-bit timer/counter, data load is controlled by writing TCP1EN=1. The rising TCP2OV will reload the contents in the pre-load register into timer/counter, if TCP2LD in TCP2C are enabled. The interrupt feature is different, in this case, the TCP1 INT will be inhibit when TCP1OV occur, the TCP2 INT is normally. TCP1S1 TCP1S0 TCP2LD TCP1EN TCP2OV FS TCP1I TBCK TB1OV TCP1 Timer/Counter M U X Figure: 20-bit Timer/Counter (TCP1 and TCP2 cascade) TCP2 Timer/Counter Preload data Data Bus Data Bus Preload data Data Bus Data Bus |
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