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MB90488BPF Datasheet(PDF) 59 Page - Fujitsu Component Limited. |
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MB90488BPF Datasheet(HTML) 59 Page - Fujitsu Component Limited. |
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59 / 120 page  MB90480/485 Series 59 10. 16-bit Reload Timer The 16-bit reload timer provides a choice of functions, including internal clock signals that count down in synchronization with three types of internal clock, as well as an event count mode that counts down at specified edge detection events in pulse signals input from external pins. This timer defines an underflow as a change in count value from 0000H to FFFFH. Thus an underflow will occur when counting from the value “reload register setting value + 1”. The choice of counting operations includes reload mode, in which the count setting values is reloaded and counting continues following an underflow event, and one-shot mode, in which an underflow event causes counting to stop. An interrupt can be generated at counter underflow, and the timer is DTC compatible. (1) Register List • TMCSR (Timer control status register) Timer control status register (high) (TMCSR) Timer control status register (low) (TMCSR) • 16-bit timer register/16-bit reload register TMR/TMRLR (high) TMR/TMRLR (low) 0000CBH Read/Write Initial value 0000CAH Read/Write Initial value 0000CDH Read/Write Initial value 0000CCH Read/Write Initial value ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ R/W 0 R/W 0 R/W 0 R/W 0 15 14 13 12 11 10 9 8 ⎯ ⎯ ⎯ ⎯⎯ ⎯ CSL1 CSL0 MOD2 MOD1 R/W 0 R/W 0 R/W 0 R/W 0 R/W 0 R/W 0 R/W 0 76 5 4 3 2 1 0 OUTE R/W 0 MOD0 OUTL RELD INTE UF CNTE TRG R/W X R/W X R/W X R/W X R/W X R/W X R/W X 15 14 13 12 11 10 9 8 D14 R/W X D15 D13 D12 D11 D10 D09 D08 R/W X R/W X R/W X R/W X R/W X R/W X R/W X 76 5 4 3 2 1 0 D06 R/W X D07 D05 D04 D03 D02 D01 D00 |
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