R5F7131 View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

R5F7131

Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Renesas Electronics 

12.3.6 Software Port Output Enable Register (SPOER) .................................................. 511

12.3.7 Port Output Enable Control Register 1 (POECR1) ............................................... 512

12.3.8 Port Output Enable Control Register 2 (POECR2) ............................................... 514

12.4 Operation ........................................................................................................................... 517

12.4.1 Input Level Detection Operation........................................................................... 518

12.4.2 Output-Level Compare Operation ........................................................................ 519

12.4.3 Release from High-Impedance State..................................................................... 520

12.5 Interrupts............................................................................................................................ 521

12.6 Usage Note......................................................................................................................... 521

12.6.1 Pin State when a Power-On Reset is Issued from the Watchdog Timer ............... 521

Section 13 Watchdog Timer (WDT)..................................................................523

13.1 Features.............................................................................................................................. 523

13.2 Input/Output Pin for WDT................................................................................................. 525

13.3 Register Descriptions ......................................................................................................... 526

13.3.1 Watchdog Timer Counter (WTCNT).................................................................... 526

13.3.2 Watchdog Timer Control/Status Register (WTCSR)............................................ 527

13.3.3 Notes on Register Access...................................................................................... 529

13.4 Operation ........................................................................................................................... 530

13.4.1 Revoking Software Standbys................................................................................ 530

13.4.2 Using Watchdog Timer Mode............................................................................... 530

13.4.3 Using Interval Timer Mode .................................................................................. 531

13.5 Interrupt Source ................................................................................................................. 532

13.6 Usage Note......................................................................................................................... 532

13.6.1 WTCNT Setting Value ......................................................................................... 532

Section 14 Serial Communication Interface (SCI) ............................................533

14.1 Features.............................................................................................................................. 533

14.2 Input/Output Pins ............................................................................................................... 535

14.3 Register Descriptions ......................................................................................................... 536

14.3.1 Receive Shift Register (SCRSR)........................................................................... 537

14.3.2 Receive Data Register (SCRDR) .......................................................................... 537

14.3.3 Transmit Shift Register (SCTSR) ......................................................................... 537

14.3.4 Transmit Data Register (SCTDR)......................................................................... 538

14.3.5 Serial Mode Register (SCSMR)............................................................................ 538

14.3.6 Serial Control Register (SCSCR).......................................................................... 541

14.3.7 Serial Status Register (SCSSR)............................................................................. 544

14.3.8 Serial Port Register (SCSPTR) ............................................................................. 550

14.3.9 Serial Direction Control Register (SCSDCR)....................................................... 552

14.3.10 Bit Rate Register (SCBRR) .................................................................................. 553

Rev. 3.00 Jan. 18, 2010 Page xv of xxiv

REJ09B0402-0300

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