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GMS90X5XC Series HYUNDAI MicroElectronics
Jan. 2001 Ver 1.0 15
† indicates resident in the GMS90X52C/54C, not in 90X51C.
Table 3. Contents of SFRs, SFRs in Numeric Order
(cont’d)
Address Register
Bit 76543210
C8H T2CON TF2 EXF2 RCLK TCLK
EXEN2
TR2 C/T2
CP/RL2
C9HT2MOD ------
T2OE
†
DCEN
CAH RC2L
CBH RC2H
CCH TL2
CDH TH2
D0H PSW CY AC F0 RS1 RS0 OV F1 P
E0H ACC
F0H B
A0
8EH
0 : Enable ALE Signal (Generated ALE Signal)
C9H
1 : Disable ALE Signal (Not Generated ALE Signal)
T2OE
0 : Disable Timer2 Output
1 : Enable Timer2 Output
†
T2OE : Timer2 Output Enable bit
A0 : ALE Signal Disable bit
X2
8FH
0 : Select 12 clock periods per machine cycle
1 : Select 6 clock periods per machine cycle
X2 : CPU & Peripheral Clock Select bit
SFR bit and byte addressable
SFR not bit addressable
- : this bit location is reserved