HCS08 datasheet(17/316 Pages) NXP

17 / 316 page

MC9S08SG8 MCU Series Data Sheet, Rev. 8

Freescale Semiconductor

Section Number

Title

Page

13.4.1 RTC Operation Example .................................................................................................195

13.5 Initialization/Application Information ..........................................................................................196

Chapter 14

Serial Communications Interface (S08SCIV4)

14.1 Introduction ...................................................................................................................................199

14.1.1 Features ...........................................................................................................................201

14.1.2 Modes of Operation ........................................................................................................201

14.1.3 Block Diagram ................................................................................................................202

14.2 Register Definition ........................................................................................................................204

14.2.1 SCI Baud Rate Registers (SCIBDH, SCIBDL) ..............................................................204

14.2.2 SCI Control Register 1 (SCIC1) .....................................................................................205

14.2.3 SCI Control Register 2 (SCIC2) .....................................................................................206

14.2.4 SCI Status Register 1 (SCIS1) ........................................................................................207

14.2.5 SCI Status Register 2 (SCIS2) ........................................................................................209

14.2.6 SCI Control Register 3 (SCIC3) .....................................................................................210

14.2.7 SCI Data Register (SCID) ...............................................................................................211

14.3 Functional Description ..................................................................................................................211

14.3.1 Baud Rate Generation .....................................................................................................211

14.3.2 Transmitter Functional Description ................................................................................212

14.3.3 Receiver Functional Description ....................................................................................213

14.3.4 Interrupts and Status Flags ..............................................................................................215

14.3.5 Additional SCI Functions ...............................................................................................216

Chapter 15

Serial Peripheral Interface (S08SPIV3)

15.1 Introduction ...................................................................................................................................219

15.1.1 Features ...........................................................................................................................221

15.1.2 Block Diagrams ..............................................................................................................221

15.1.3 SPI Baud Rate Generation ..............................................................................................223

15.2 External Signal Description ..........................................................................................................224

15.2.1 SPSCK — SPI Serial Clock ............................................................................................224

15.2.2 MOSI — Master Data Out, Slave Data In ......................................................................224

15.2.3 MISO — Master Data In, Slave Data Out ......................................................................224

15.2.4 SS — Slave Select ..........................................................................................................224

15.3 Modes of Operation .......................................................................................................................225

15.3.1 SPI in Stop Modes ..........................................................................................................225

15.4 Register Definition ........................................................................................................................225

15.4.1 SPI Control Register 1 (SPIC1) ......................................................................................225

15.4.2 SPI Control Register 2 (SPIC2) ......................................................................................226

15.4.3 SPI Baud Rate Register (SPIBR) ....................................................................................227

15.4.4 SPI Status Register (SPIS) ..............................................................................................228

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