S3C8275 データシートの表示（PDF） - Samsung

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S3C8275

8-BIT CMOS MICROCONTROLLERS

Samsung 

Table of Contents (Continued)

Part II Hardware Descriptions

Chapter 7

Clock Circuit

Overview .............................................................................................................................................7-1

System Clock Circuit...................................................................................................................7-1

Main Oscillator Circuits................................................................................................................7-2

Sub Oscillator Circuits .................................................................................................................7-2

Clock Status During Power-Down Modes .......................................................................................7-3

System Clock Control Register (CLKCON).....................................................................................7-4

Clock Output Control Register (CLOCON)......................................................................................7-5

Oscillator Control Register (OSCCON)...........................................................................................7-6

Switching the CPU Clock .............................................................................................................7-7

Chapter 8

RESET and Power-Down

System Reset .....................................................................................................................................8-1

Overview .....................................................................................................................................8-1

Normal Mode Reset Operation......................................................................................................8-1

Hardware Reset Values................................................................................................................8-2

Power-Down Modes .............................................................................................................................8-5

Stop Mode..................................................................................................................................8-5

Idle Mode....................................................................................................................................8-6

Chapter 9

I/O Ports

Overview .............................................................................................................................................9-1

Port Data Registers .....................................................................................................................9-2

port 0 .........................................................................................................................................9-3

port 1 .........................................................................................................................................9-7

port 2 .........................................................................................................................................9-11

port 3 .........................................................................................................................................9-13

Port 4.........................................................................................................................................9-15

Port 5.........................................................................................................................................9-17

Port 6.........................................................................................................................................9-19

Chapter 10 Basic Timer

Overview .............................................................................................................................................10-1

Basic Timer Control Register (BTCON) ..........................................................................................10-2

Basic Timer Function Description..................................................................................................10-3

S3C8275/F8275/C8278/F8278/C8274/F8274 MICROCONTROLLER

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