參數(shù)資料
型號： GMS87C7216LQ
廠商： Electronic Theatre Controls, Inc.
元件分類： 數(shù)學(xué)處理器
英文描述： 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述： 8位單晶片微控制器
文件頁數(shù)： 49/121頁
文件大?。?/td> 1645K
代理商： GMS87C7216LQ
GMS81C7208/7216
FEB. 2005 Ver 1.04
45
13.1 8-bit Timer / Counter Mode
The GMS81C7208/16 has four 8-bit Timer/Counters, timer 0,
timer 1, timer 2, timer 3 which are shown in Figure 13-3, Figure
13-4.
The “timer” or “counter” function is selected by control registers
TMn. To use as an 8-bit Timer/Counter mode, CAP0, CAP1 and
16BIT0 bits should be cleared to “0”. These timers have each 8-
bit count register and data register. The count register is increased
by every internal or external clock input. The internal clock has a
prescaler divide ratio option of 2~2048 selected by control bits of
register TM
n
(n=0,1,2,3).
Figure 13-3 8-bit Timer/Counter 0, 1
EC0 PIN
÷
2
÷
4
÷
8
MUX
P
T0IF
clear
0: Stop
1: Clear and start
000
001
010
TIMER 0
INTERRUPT
MUX
T1IF
clear
0: Stop
1: Clear and start
TIMER 1
INTERRUPT
÷
8
÷
2
÷
1
TDR0 (8-bit)
T1 (8-bit)
TDR1 (8-bit)
T0 (8-bit)
Comparator
Comparator
TIMER 0
TIMER 1
BTCL
T0CK1
7
6
5
4
3
2
1
0
-
CAP0
INITIAL VALUE: 00
H
ADDRESS: 0E0
H
TM0
T0CK0 T0CN T0ST
-
T0CK2
X
X
X means don’t care
0
÷
32
÷
128
÷
512
÷
2048
011
100
101
110
111
00
01
10
11
BTCL
T1CK1
-
-
INITIAL VALUE: 00
H
ADDRESS: 0E2
H
TM1
T1CK0 T1CN T1ST
16BIT0
CAP1
X
0
0
0
Edge Detector
f
XIN
reserved
0X
1X
SCMR[1:0]
X
X
X
X
X
X
X
X
X
T0CN
T0CK[2:0]
1
0
T0ST
T1ST
T1CN
1
0
T1CK[1:0]
[0E1
H
]
[0E1
H
]
[0E4
H
]
[0E3
H
]
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