
S3C94A5/F94A5 MICROCONTROLLER 
xix 
List of Register Descriptions 
Register 
Identifier 
Full Register Name 
Page 
Number 
ADCON 
BTCON 
CLKCON 
FLAGS 
INTPND1 
INTPND2 
INTPND3 
P1CONH 
P1CONL 
P1INT 
P1EDGEH 
P1EDGEL 
P2CONH 
P2CONL 
P2PUR 
P3CONH 
P3CONL 
P3INT 
P3EDGEH 
P3EDGEL 
P3PUR 
P4CONH 
P4CONM 
P4CONL 
P4n5INT 
P4PUR 
P5CONH 
P5CONL 
SIOCON 
STPCON 
SYM 
T0CON 
T1CON 
T2CON 
WTCON 
A/D Converter Control Register .............................................................................4-5 
Basic Timer Control Register................................................................................4-6 
System Clock Control Register.............................................................................4-7 
System Flags Register ........................................................................................4-8 
Interrupt Pending Register 1 .................................................................................4-9 
Interrupt Pending Register 2.................................................................................4-10 
Interrupt Pending Register 3.................................................................................4-11 
Port 1 Control Register (High Byte) .......................................................................4-12 
Port 1 Control Register (Low Byte)........................................................................4-13 
Port 1 Interrupt Control Register............................................................................4-14 
Port 1 Interrupt Edge Selection Register (High Byte)...............................................4-15 
Port 1 Interrupt Edge Selection Register (Low Byte)................................................4-16 
Port 2 Control Register (High Byte) .......................................................................4-17 
Port 2 Control Register (Low Byte)........................................................................4-18 
Port 2 Pull-up Control Register..............................................................................4-19 
Port 3 Control Register (High Byte) .......................................................................4-20 
Port 3 Control Register (Low Byte)........................................................................4-21 
Port 3 Interrupt Control Register............................................................................4-22 
Port 3 Interrupt Edge Selection Register (High Byte)...............................................4-23 
Port 3 Interrupt Edge Selection Register (Low Byte)................................................4-24 
Port 3 Pull-up Control Register..............................................................................4-25 
Port 4 Control Register (High Byte) .......................................................................4-26 
Port 4 Control Register (Middle Byte) ....................................................................4-27 
Port 4 Control Register (Low Byte)........................................................................4-28 
Port 4 and 5 Interrupt Control Register...................................................................4-29 
Port 4 Pull-up Control Register..............................................................................4-30 
Port 5 Control Register (High Byte) .......................................................................4-31 
Port 5 Control Register (Low Byte)........................................................................4-32 
SIO Control Register............................................................................................4-33 
Stop Control Register...........................................................................................4-34 
System Mode Register ........................................................................................4-35 
Timer 0 Control Register.......................................................................................4-36 
Timer 1 Control Register.......................................................................................4-37 
Timer 2 Control Register.......................................................................................4-38 
Watch Timer Control Register...............................................................................4-39