GMS81C1404 Datasheet, PDF (45/93 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS81C1404/GMS81C1408
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
PWME 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 13-1 Operating Modes of Timer 0 and Timer 1
1. X: The value “0” or “1” corresponding your operation.
13.1 8-bit Timer/Counter Mode
The GMS81C1404 and GMS81C1408 has four 8-bit Tim-
er/Counters, Timer 0, Timer 1, Timer 2 and Timer 3, as
shown in Figure 13-2 .
The “timer” or “counter” function is selected by mode reg-
isters TMx as shown in Figure 13-1 and Table 13-1 . 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 13-1 ).
TM0
TM1
EC0
fxin
-
-
CAP0
-
-
0
POL
16BIT PWME
X
0
0
Edge Detector
T0CK[2:0]
÷2
÷4
÷8
÷ 32
÷ 128
÷ 512
÷ 2048
÷1
÷2
÷8
MUX
T1CK[1:0]
MUX
T0CK2 T0CK1
X
X
CAP1 T1CK1
0
X
1
T0CN
1
T1CN
T0CK0 T0CN T0ST
ADDRESS : D0H
RESET VALUE : --000000
X
X
X
T1CK0 T1CN T1ST
ADDRESS : D2H
RESET VALUE : 00000000
X
X
X
X: The value “0” or “1” corresponding your operation.
T0ST
0 : Stop
1 : Clear and Start
T0 (8-bit)
CLEAR
COMPARATOR
TDR0 (8-bit)
T0IF
TIMER 0
INTERRUPT
T1ST
0 : Stop
1 : Clear and Start
T1 (8-bit)
CLEAR
COMP0 PIN
F/F
COMPARATOR
TDR1 (8-bit)
T1IF
TIMER 1
INTERRUPT
Figure 13-2 8-bit Timer / Counter Mode
June. 2001 Ver 1.2
43