SH7721 datasheet(18/1524 Pages) RENESAS

18 / 1524 page

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

13.5

Software Standby Mode..................................................................................................... 489

13.5.1 Transition to Software Standby Mode .................................................................. 489

13.5.2 Canceling Software Standby Mode ...................................................................... 489

13.6

Module Standby Function.................................................................................................. 491

13.6.1 Transition to Module Standby Function ............................................................... 491

13.6.2 Canceling Module Standby Function.................................................................... 491

13.7

STATUS Pin Change Timing ............................................................................................ 492

13.7.1 Reset ..................................................................................................................... 492

13.7.2 Software Standby Mode........................................................................................ 493

13.7.3 Sleep Mode ........................................................................................................... 494

13.8

Hardware Standby Mode ................................................................................................... 496

13.8.1 Transition to Hardware Standby Mode................................................................. 496

13.8.2 Canceling the Hardware Standby Mode ............................................................... 496

13.8.3 Hardware Standby Mode Timing.......................................................................... 497

Section 14 Timer Unit (TMU)............................................................................. 499

14.1

Features.............................................................................................................................. 499

14.2

Register Descriptions ......................................................................................................... 501

14.2.1 Timer Start Register (TSTR) ................................................................................ 502

14.2.2 Timer Control Registers (TCR) ............................................................................ 503

14.2.3 Timer Constant Registers (TCOR) ....................................................................... 504

14.2.4 Timer Counters (TCNT) ....................................................................................... 504

14.3

Operation ........................................................................................................................... 505

14.3.1 Counter Operation ................................................................................................ 505

14.4

Interrupts............................................................................................................................ 508

14.4.1 Status Flag Set Timing.......................................................................................... 508

14.4.2 Status Flag Clear Timing ...................................................................................... 508

14.4.3 Interrupt Sources and Priorities ............................................................................ 509

14.5

Usage Notes ....................................................................................................................... 510

14.5.1 Writing to Registers .............................................................................................. 510

14.5.2 Reading Registers ................................................................................................. 510

Section 15 16-Bit Timer Pulse Unit (TPU) ......................................................... 511

15.1

Features.............................................................................................................................. 511

15.2

Input/Output Pins ...............................................................................................................514

15.3

Register Descriptions ......................................................................................................... 515

15.3.1 Timer Control Registers (TCR) ............................................................................ 516

15.3.2 Timer Mode Registers (TMDR) ........................................................................... 520

15.3.3 Timer I/O Control Registers (TIOR) .................................................................... 521

15.3.4 Timer Interrupt Enable Registers (TIER) ............................................................. 523

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