SH7785 datasheet(18/1692 Pages) RENESAS

18 / 1692 page

Rev.1.00 Jan. 10, 2008 Page xviii of xxx

REJ09B0261-0100

16.4.1

Reset Request ..................................................................................................... 769

16.4.2

Using Watchdog Timer Mode ............................................................................ 771

16.4.3

Using Interval Timer Mode ................................................................................ 771

16.4.4

Time until WDT Counters Overflow.................................................................. 772

16.4.5

Clearing WDT Counters ..................................................................................... 773

16.5

Status Pin Change Timing during Reset ............................................................................ 774

16.5.1

Power-On Reset by

PRESET Pin ....................................................................... 774

16.5.2

Power-On Reset by Watchdog Timer Overflow................................................. 777

16.5.3

Manual Reset by Watchdog Timer Overflow ..................................................... 779

Section 17 Power-Down Mode ........................................................................................ 781

17.1

Features.............................................................................................................................. 781

17.1.1

Types of Power-Down Modes ............................................................................ 781

17.2

Input/Output Pins...............................................................................................................783

17.3

Register Descriptions ......................................................................................................... 783

17.3.1

Sleep Control Register (SLPCR) ........................................................................ 785

17.3.2

Standby Control Register 0 (MSTPCR0) ........................................................... 786

17.3.3

Standby Control Register 1 (MSTPCR1) ........................................................... 789

17.3.4

Standby Display Register (MSTPMR) ............................................................... 791

17.4

Sleep Mode ........................................................................................................................ 793

17.4.1

Transition to Sleep Mode.................................................................................... 793

17.4.2

Releasing Sleep Mode ........................................................................................ 793

17.5

Deep Sleep Mode............................................................................................................... 794

17.5.1

Transition to Deep Sleep Mode .......................................................................... 794

17.5.2

Releasing Deep Sleep Mode ............................................................................... 795

17.6

Module Standby Functions ................................................................................................ 796

17.6.1

Transition to Module Standby Mode .................................................................. 796

17.6.2

Releasing Module Standby Functions ................................................................ 796

17.7

Timing of the Changes on the STATUS Pins .................................................................... 797

17.7.1

Reset ................................................................................................................... 797

17.7.2

Releasing Sleep Mode ........................................................................................ 797

17.8

DDR-SDRAM Power Supply Backup ............................................................................... 797

Section 18 Timer Unit (TMU).......................................................................................... 799

18.1

Features.............................................................................................................................. 799

18.2

Input/Output Pins...............................................................................................................801

18.3

Register Descriptions ......................................................................................................... 802

18.3.1

Timer Start Registers (TSTRn) (n = 0, 1) ........................................................... 804

18.3.2

Timer Constant Registers (TCORn) (n = 0 to 5) ................................................ 806

18.3.3

Timer Counters (TCNTn) (n = 0 to 5) ................................................................ 806

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