r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 17

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

14.5 DMAC Interrupt Sources ................................................................................................... 729
14.6 Usage Notes ....................................................................................................................... 730
Section 15 Clock Pulse Generator (CPG)
15.1 Features.............................................................................................................................. 733
15.2 Input/Output Pins ............................................................................................................... 736
15.3 Clock Operating Modes ..................................................................................................... 737
15.4 Register Descriptions ......................................................................................................... 739
15.5 Calculating the Frequency ................................................................................................. 748
15.6 How to Change the Frequency........................................................................................... 749
15.7 Notes on Designing Board ................................................................................................. 756
Section 16 Watchdog Timer and Reset (WDT)
16.1 Features.............................................................................................................................. 759
16.2 Input/Output Pins ............................................................................................................... 761
16.3 Register Descriptions ......................................................................................................... 762
16.4 Operation ........................................................................................................................... 769
14.4.2
14.4.3
14.4.4
14.4.5
14.4.6
14.4.7
14.6.1
14.6.2
14.6.3
14.6.4
14.6.5
14.6.6
15.4.1
15.4.2
15.4.3
15.4.4
15.6.1
15.6.2
16.3.1
16.3.2
16.3.3
16.3.4
16.3.5
Channel Priority.................................................................................................. 706
DMA Transfer Types.......................................................................................... 709
DMA Transfer Flow ........................................................................................... 717
Repeat Mode Transfer ........................................................................................ 719
Reload Mode Transfer ........................................................................................ 720
DREQ Pin Sampling Timing .............................................................................. 721
Stopping Modules and Changing Frequency ...................................................... 730
Address Error...................................................................................................... 730
NMI Interrupt...................................................................................................... 730
Burst Mode Transfer........................................................................................... 730
Divided-Up DACK Output................................................................................. 730
DACK/DREQ Setting......................................................................................... 731
Frequency Control Register 0 (FRQCR0) .......................................................... 741
Frequency Control Register 1 (FRQCR1) .......................................................... 742
Frequency Display Register 1 (FRQMR1) ......................................................... 745
PLL Control Register (PLLCR).......................................................................... 747
Changing the Frequency of Clocks Other than the Bus Clock ........................... 749
Changing the Bus Clock Frequency ................................................................... 749
Watchdog Timer Stop Time Register (WDTST) ................................................ 763
Watchdog Timer Control/Status Register (WDTCSR)....................................... 764
Watchdog Timer Base Stop Time Register (WDTBST)..................................... 766
Watchdog Timer Counter (WDTCNT)............................................................... 767
Watchdog Timer Base Counter (WDTBCNT) ................................................... 768
..................................................................... 733
........................................................... 759
Rev.1.00 Jan. 10, 2008 Page xvii of xxx
REJ09B0261-0100