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MB90330A Datasheet(PDF) 39 Page - Fujitsu Component Limited. |
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MB90330A Datasheet(HTML) 39 Page - Fujitsu Component Limited. |
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39 / 120 page  MB90330A Series 39 2. Time-base timer The time-base timer is an 18-bit free-run counter (time-base timer counter) that counts in synchronization with the main clock (2 cycles of the oscillation clock HCLK). Four different time intervals can be selected, for each of which an interrupt request can be generated. Operating clock signals are supplied to peripheral resources such as the oscillation stabilization wait timer and watchdog timer. • Interval time of time-base timer Notes : • HCLK : Oscillation clock frequency • The parenthesized values assume an oscillator clock frequency of 6 MHz. • Clock cycles supplied from time-base timer Notes : • HCLK : Oscillation clock frequency • The parenthesized values assume an oscillator clock frequency of 6 MHz. • Register list Internal count clock cycle Interval time 2/HCLK (0.33 µs) 212/HCLK (Approx. 0.68 ms) 214/HCLK (Approx. 2.7 ms) 216/HCLK (Approx. 10.9 ms) 219/HCLK (Approx. 87.4 ms) Where to supply clock Clock cycle Main clock oscillation stabilization wait 213/HCLK (Approx. 1.36 ms) 215/HCLK (Approx. 5.46 ms) 217/HCLK (Approx. 21.84 ms) Watch dog timer 212/HCLK (Approx. 0.68 ms) 214/HCLK (Approx. 2.7 ms) 216/HCLK (Approx. 10.9 ms) 219/HCLK (Approx. 87.4 ms) Time-base timer control register (TBTC) bit Initial Value Address : 0000A9H 1 - - 00100B ( ⎯ )( ⎯ ) ( R/W ) ( R/W ) ( W ) ( R/W ) ( R/W ) 15 14 13 12 11 10 9 8 ⎯ ( R/W ) RESV ⎯ TBIE TBOF TBR TBC1 TBC0 |
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Similar Description - MB90330A |
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