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GMS87C2020 Datasheet(PDF) 52 Page - Hynix Semiconductor

Part # GMS87C2020
Description  CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver
PDF  92 Pages
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Manufacturer  HYNIX [Hynix Semiconductor]
Direct Link  http://www.skhynix.com/kor/main.do
Logo HYNIX - Hynix Semiconductor

GMS87C2020 Datasheet(HTML) 52 Page - Hynix Semiconductor

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GMS81C2020/GMS81C2120
Hyundai Micro Electro nics
52
preliminary
Nov. 1999 Ver 0.0
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 ).
Figure 15-2 8-bit Timer / Counter Mode
16BIT
CAP0
CAP1
PWM1E
T0CK[2:0]
T1CK[1:0]
PWMO
TIMER 0
TIMER1
0
0
0
0
XXX
XX
0
8-bit Timer
8-bit Timer
0
0
1
0
111
XX
0
8-bit Event Counter
8-bit Capture
0
1
0
0
XXX
XX
1
8-bit Capture
8-bit Compare output
0
X1
0
1
XXX
XX
1
8-bit Timer/Counter
10-bit PWM
1
0
0
0
XXX
11
0
16-bit Timer
10
0
0
111
11
0
16-bit Event Counter
1
1
X
0
XXX
11
0
16-bit Capture
1
0
0
0
XXX
11
1
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.
÷ 1
÷ 2
÷ 8
TM0
ADDRESS : D0H
RESET VALUE : --000000
-
-
CAP0
T0CK2
T0CK1
T0CK0
T0CN
T0ST
TM1
ADDRESS : D2H
RESET VALUE : 00000000
POL
16BIT
PWM1E
CAP1
T1CK1
T1CK0
T1CN
T1ST
--
0
XXXXX
X
000
XXXX
÷ 2
÷ 4
÷ 128
÷ 512
÷ 8
÷ 32
fXI
EC0
Edge Detector
MUX
MUX
1
1
T0 ( 8-bit )
TDR0 ( 8-bit )
T0IF
CLEAR
COMPARATOR
TIMER 0
INTERRUPT
T1 ( 8-bit )
TDR1 ( 8-bit )
CLEAR
COMPARATOR
T0ST
0 : Stop
1 : Clear and Start
T1ST
0 : Stop
1 : Clear and Start
T0CN
T1CN
T0CK[2:0]
T1CK[1:0]
÷ 2048
X : The value "0" or "1" corresponding your operation.
T0CK
F/F
R40/T0O
R4FUNC.0
F/F
R56/PWM1O/T1O
R5FUNC.6
T1IF
TIMER 1
INTERRUPT



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