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6-1
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List of Figures
S3C8-Series Interrupt Types ..................................................................................... 5-2
S3C8275X/C8278X/C8274X Interrupt Structure ....................................................... 5-3
ROM Vector Address Area ........................................................................................ 5-4
Interrupt Function Diagram ........................................................................................ 5-7
System Mode Register (SYM) ................................................................................... 5-9
Interrupt Mask Register (IMR) ................................................................................... 5-10
Interrupt Request Priority Groups .............................................................................. 5-11
Interrupt Priority Register (IPR) ................................................................................. 5-12
Interrupt Request Register (IRQ)............................................................................... 5-13
System Flags Register (FLAGS) ............................................................................... 6-6
Crystal/Ceramic Oscillator (fx) ................................................................................... 7-2
RC Oscillator (fx)........................................................................................................ 7-2
Crystal Oscillator (fxt)................................................................................................. 7-2
External Oscillator (fxt)............................................................................................... 7-2
System Clock Circuit Diagram ................................................................................... 7-3
System Clock Control Register (CLKCON) ............................................................... 7-4
Clock Output Control Register (CLOCON) ................................................................ 7-5
Clock Output Block Diagram...................................................................................... 7-5
Oscillator Control Register (OSCCON) ..................................................................... 7-6
STOP Control Register (STPCON)............................................................................ 7-8
S3C8275X/C8278X/C8274X I/O Port Data Register Format .................................... 9-2
Port 0 High-Byte Control Register (P0CONH)........................................................... 9-4
Port 0 Low-Byte Control Register (P0CONL) ............................................................ 9-4
Port 0 Pull-up Control Register (P0PUR) .................................................................. 9-5
External Interrupt Control Register, Low Byte (EXTICONL)...................................... 9-5
External Interrupt Pending Register (EXTIPND) ....................................................... 9-6
Port 1 High-Byte Control Register (P1CONH)........................................................... 9-8
Port 1 Low-Byte Control Register (P1CONL) ............................................................ 9-8
Port 1 Pull-up Control Register (P1PUR) .................................................................. 9-9
External Interrupt Control Register, High Byte (EXTICONH) .................................... 9-9
External Interrupt Control Register, Low Byte (EXTICONL)...................................... 9-10
External Interrupt Pending Register (EXTIPND) ....................................................... 9-10
Port 2 High-byte Control Register (P2CONH) ........................................................... 9-11
Port 2 Low-byte Control Register (P2CONL)............................................................. 9-12
Port 2 Pull-up Control Register (P2PUR) .................................................................. 9-12
Port 3 High Byte Control Register (P3CONH) ........................................................... 9-13
Port 3 Low Byte Control Register (P3CONL) ............................................................ 9-14
Port 3 Pull-up Control Register (P3PUR) .................................................................. 9-14
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X MICROCONTROLLER
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