SH7708 datasheet(17/633 Pages) RENESAS

17 / 633 page

14.3.2 Pin Connections.................................................................................................... 405

14.3.3 Data Format.......................................................................................................... 406

14.3.4 Register Settings ................................................................................................... 407

14.3.5 Clock .................................................................................................................... 409

14.3.6 Data Transmission and Reception........................................................................ 412

14.4

Usage Notes ....................................................................................................................... 418

14.4.1 Receive Data Timing and Receive Margin in Asynchronous Mode.................... 418

14.4.2 Retransmission (Receive and Transmit Modes)................................................... 420

Section 15 I/O Ports ............................................................................................................ 423

15.1

Overview............................................................................................................................ 423

15.1.1 Features ................................................................................................................ 423

15.1.2 Block Diagram...................................................................................................... 423

15.1.3 Pin Configuration ................................................................................................. 426

15.1.4 Register Configuration ......................................................................................... 427

15.2

Register Descriptions......................................................................................................... 427

15.2.1 Port Control Register (PCTR) .............................................................................. 427

15.2.2 Port Data Register (PDTR) .................................................................................. 428

15.2.3 Serial Port Register (SCSPTR) ............................................................................ 429

Section 16 Electrical Characteristics (-SH7708, SH7708S-) ................................ 431

16.1

Absolute Maximum Ratings.............................................................................................. 431

16.2

DC Characteristics ............................................................................................................. 432

16.3

AC Characteristics ............................................................................................................. 433

16.3.1 Clock Timing........................................................................................................ 434

16.3.2 Control Signal Timing.......................................................................................... 444

16.3.3 AC Bus Timing Specifications ............................................................................. 448

16.3.4 Basic Timing ........................................................................................................ 452

16.3.5 Burst ROM Timing .............................................................................................. 455

16.3.6 DRAM Timing ..................................................................................................... 458

16.3.7 Synchronous DRAM Timing ............................................................................... 468

16.3.8 Pseudo-SRAM Timing ......................................................................................... 479

16.3.9 PCMCIA Timing.................................................................................................. 484

16.3.10 Peripheral Module Signal Timing ........................................................................ 491

16.3.11 AC Characteristics Test Conditions ..................................................................... 494

Section 17 Electrical Characteristics (-SH7708R-) .................................................. 495

17.1

Absolute Maximum Ratings.............................................................................................. 495

17.2

DC Characteristics ............................................................................................................. 496

17.3

AC Characteristics ............................................................................................................. 497

17.3.1 Clock Timing........................................................................................................ 498

17.3.2 Control Signal Timing.......................................................................................... 504

17.3.3 AC Bus Timing Specifications ............................................................................. 508

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