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SH7727 Datasheet(PDF) 38 Page - Renesas Technology Corp |
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SH7727 Datasheet(HTML) 38 Page - Renesas Technology Corp |
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38 / 1109 page  Rev. 5.00 Dec 12, 2005 page xxxviii of lxxii Section 10 On-Chip Oscillation Circuits ...................................................................... 257 10.1 Overview........................................................................................................................... 257 10.1.1 Features................................................................................................................ 257 10.2 Overview of the CPG........................................................................................................ 259 10.2.1 CPG Block Diagram ............................................................................................ 259 10.2.2 CPG Pin Configuration ........................................................................................ 261 10.2.3 CPG Register Configuration ................................................................................ 261 10.3 Clock Operating Modes .................................................................................................... 262 10.4 Register Descriptions ........................................................................................................ 267 10.4.1 Frequency Control Register (FRQCR)................................................................. 267 10.4.2 CKIO2 Control Register (CKIO2CR).................................................................. 269 10.5 Changing the Frequency ................................................................................................... 270 10.5.1 Changing the Multiplication Rate ........................................................................ 270 10.5.2 Changing the Division Ratio................................................................................ 270 10.6 Overview of the WDT....................................................................................................... 271 10.6.1 Block Diagram of the WDT................................................................................. 271 10.6.2 Register Configurations ....................................................................................... 272 10.7 WDT Registers.................................................................................................................. 272 10.7.1 Watchdog Timer Counter (WTCNT)................................................................... 272 10.7.2 Watchdog Timer Control/Status Register (WTCSR)........................................... 273 10.7.3 Notes on Register Access..................................................................................... 275 10.8 Using the WDT ................................................................................................................. 275 10.8.1 Canceling Standby Mode..................................................................................... 275 10.8.2 Changing the Frequency ...................................................................................... 276 10.8.3 Using Watchdog Timer Mode.............................................................................. 276 10.8.4 Using Interval Timer Mode.................................................................................. 277 10.9 Notes on Board Design ..................................................................................................... 277 Section 11 Extend Clock Pulse Generator for USB (EXCPG) .............................. 279 11.1 Overview........................................................................................................................... 279 11.1.1 EXCPG ................................................................................................................ 279 11.2 Functions........................................................................................................................... 279 11.2.1 Block Diagram..................................................................................................... 279 11.2.2 Pin Configuration................................................................................................. 280 11.2.3 Register Configuration......................................................................................... 280 11.3 Register Descriptions ........................................................................................................ 280 11.3.1 EXCPG Control Register (EXCPGCR) ............................................................... 280 11.4 Usage Notes ...................................................................................................................... 281 |
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