Samsung S3C9228/P9228, 8-Bit CMOS Microcontroller user manual Part II Hardware Descriptions

	Table of Contents (Continued)
	Part II — Hardware Descriptions
Chapter 7	Clock Circuit
Overview		7-1
System Clock Circuit		7-1
CPU Clock Notation		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
Oscillator Control Register (OSCCON)		7-5
Switching The CPU Clock		7-6
Stop Control Register (STPCON)		7-7
Chapter 8	RESET and Power-Down
System Reset		8-1
Overview		8-1
Power-Down Modes		8-2
Stop Mode		8-2
Idle Mode		8-3
Hardware Reset Values		8-4
Chapter 9	I/O Ports
Overview		9-1
Port Data Registers		9-2
Port 0		9-3
Port 1		9-6
Port 2		9-9
Port 3		9-11
Port 4		9-14
Port 5		9-15
Port 6		9-16
Chapter 10	Basic Timer
Overview		10-1
Basic Timer Control Register (BTCON)		10-2
Basic Timer Function Description		10-3

S3C9228/P9228 MICROCONTROLLERS vii