SH7721 datasheet(19/1524 Pages) RENESAS

19 / 1524 page

Rev. 3.00 Jan. 18, 2008 Page xix of lxii

15.3.5 Timer Status Registers (TSR) ............................................................................... 524

15.3.6 Timer Counters (TCNT) ....................................................................................... 526

15.3.7 Timer General Registers (TGR)............................................................................ 526

15.3.8 Timer Start Register (TSTR) ................................................................................ 527

15.4

Operation ........................................................................................................................... 528

15.4.1 Overview............................................................................................................... 528

15.4.2 Basic Functions..................................................................................................... 529

15.4.3 Buffer Operation ................................................................................................... 534

15.4.4 PWM Modes ......................................................................................................... 536

15.4.5 Phase Counting Mode ........................................................................................... 539

15.5

Usage Notes ....................................................................................................................... 545

Section 16 Compare Match Timer (CMT) ..........................................................547

16.1

Features.............................................................................................................................. 547

16.2

Register Descriptions ......................................................................................................... 549

16.2.1 Compare Match Timer Start Register (CMSTR) .................................................. 550

16.2.2 Compare Match Timer Control/Status Register (CMCSR) .................................. 551

16.2.3 Compare Match Timer Counter (CMCNT) .......................................................... 553

16.2.4 Compare Match Timer Constant Register (CMCOR)........................................... 553

16.3

Operation ........................................................................................................................... 554

16.3.1 Counter Operation................................................................................................. 554

16.3.2 Counter Size.......................................................................................................... 555

16.3.3 Timing for Counting by CMCNT ......................................................................... 556

16.3.4 DMA Transfer Requests and Internal Interrupt Requests to CPU ........................ 556

16.3.5 Compare Match Flag Set Timing (All Channels) ................................................. 557

Section 17 Realtime Clock (RTC) .......................................................................559

17.1

Features.............................................................................................................................. 559

17.2

Input/Output Pin................................................................................................................. 561

17.3

Register Descriptions ......................................................................................................... 562

17.3.1 64-Hz Counter (R64CNT) .................................................................................... 563

17.3.2 Second Counter (RSECCNT) ............................................................................... 564

17.3.3 Minute Counter (RMINCNT) ............................................................................... 565

17.3.4 Hour Counter (RHRCNT)..................................................................................... 566

17.3.5 Day of Week Counter (RWKCNT) ...................................................................... 567

17.3.6 Date Counter (RDAYCNT) .................................................................................. 568

17.3.7 Month Counter (RMONCNT) .............................................................................. 569

17.3.8 Year Counter (RYRCNT) ..................................................................................... 569

17.3.9 Second Alarm Register (RSECAR) ...................................................................... 570

17.3.10 Minute Alarm Register (RMINAR) ...................................................................... 570

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