Samsung S3C84E5 Part II Hardware Descriptions

S3C84E5/C84E9/P84E9 MICROCONTROLLER vii
Table of Contents (Continued)
Part II Hardware Descriptions
Chapter 7 Clock Circuit
Overview.............................................................................................................................................7-1
System Clock Circuit...................................................................................................................7-1
Clock Status During Power-Down Modes.......................................................................................7-2
System Clock Control Register (CLKCON).....................................................................................7-3
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.........................................................................................................................................9-5
Port 2.........................................................................................................................................9-7
Port 3.........................................................................................................................................9-12
Port 4.........................................................................................................................................9-14
Chapter 10 Basic Timer
Overview.............................................................................................................................................10-1
Basic Timer (BT) .........................................................................................................................10-1
Basic Timer Control Register (BTCON)..........................................................................................10-1
Basic Timer Function Description..................................................................................................10-3