GMS81C2020 Datasheet, PDF (52/92 Pages) Hynix Semiconductor – CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver

GMS81C2020/GMS81C2120
Hyundai Micro Electro nics
16BIT
0
0
0
0
1
1
1
1
CAP0
0
0
1
X¹
0
0
1
0
CAP1
0
1
0
0
0
0
X
0
PWM1E T0CK[2:0] T1CK[1:0] PWMO
0
XXX
XX
0
0
111
XX
0
0
XXX
XX
1
1
XXX
XX
1
0
XXX
11
0
0
111
11
0
0
XXX
11
0
0
XXX
11
1
TIMER 0
TIMER1
8-bit Timer
8-bit Timer
8-bit Event Counter 8-bit Capture
8-bit Capture
8-bit Compare output
8-bit Timer/Counter 10-bit PWM
16-bit Timer
16-bit Event Counter
16-bit Capture
16-bit Compare output
Table 15-1 Operating Modes of Timer 0 and Timer 1
1. X : The value "0" or "1" corresponding your operation.
15.1 8-bit Timer/Counter Mode
The GMS81C2020 and GMS81C2120 has four 8-bit Tim-
er/Counters, Timer 0, Timer 1 as shown in Figure 15-2 .
The "timer" or "counter" function is selected by mode reg-
isters TMx as shown in Figure 15-1 and Table 15-1 . To
use as an 8-bit timer/counter mode, bit CAP0 of TM0 is
cleared to "0" and bits 16BIT of TM1 should be cleared to
“0”(Table 15-1 ).
TM0
TM1
EC0
fXI
ADDRESS : D0H
-
-
CAP0 T0CK2 T0CK1 T0CK0 T0CN T0ST
RESET VALUE : --000000
-
-
0
X
X
X
X
X
POL
16BIT PWM1E CAP1 T1CK1 T1CK0 T1CN
T1ST
ADDRESS : D2H
RESET VALUE : 00000000
X
0
0
0
X
Edge Detector
T0CK[2:0]
÷2
÷4
÷8
÷ 32
÷ 128
÷ 512
÷ 2048
÷1
÷2
÷8
T0CK
1
MUX
T1CK[1:0]
MUX
T0CN
1
T1CN
X
X
X
X : The value "0" or "1" corresponding your operation.
T0ST
0 : Stop
1 : Clear and Start
T0 ( 8-bit )
CLEAR
COMPARATOR
F/F
T0IF
R40/T0O
R4FUNC.0
TIMER 0
INTERRUPT
TDR0 ( 8-bit )
T1ST
0 : Stop
1 : Clear and Start
T1 ( 8-bit )
CLEAR
COMPARATOR
TDR1 ( 8-bit )
F/F
T1IF
R56/PWM1O/T1O
R5FUNC.6
TIMER 1
INTERRUPT
Figure 15-2 8-bit Timer / Counter Mode
52
preliminary
Nov. 1999 Ver 0.0