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參數(shù)資料
| 型號(hào)： | HMS81C43XX |
| 廠商： | Hynix Semiconductor Inc. |
| 英文描述： | CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER FOR TELEVISION |
| 中文描述： | CMOS單芯片8位單片機(jī)電視 |
| 文件頁數(shù)： | 38/100頁 |
| 文件大小： | 1943K |
| 代理商： | HMS81C43XX |
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HMS81C43xx / GMS87C4060
38
November 2001 ver 1.2
Figure 11-5 Simplified Block Diagram of 16bit Timer0, 1
11.3 Timer / Event Counter 2, 3
Timer 2, 3 consists of prescaler, multiplexer, 8-bit compare
data register, 8-bit count register, Control register, and
Comparator as shown in Figure 11-5 .
These Timers have two operating modes. One is the timer
mode which is operated by internal clock, other is event
counter mode which is operated by external clock from pin
R25/EC2, R27/EC3.
These Timers can run separated 8bit timer or combined
16bit timer.
Note:
You can read Timer 2, Timer 3 value from TDR2 or
TDR3. But if you write data to TDR2 or TDR3, it changes
Timer 2 or Timer 3 modulo data, not Timer value.
The content of TDR2, TDR3 must be initialized (by soft-
ware) with the value between 01
H
and FF
H
,not to 00
H
.
Or not, Timer 2 or Timer 3 can not count up forever.
The control registers for Timer 2,3 are shown below
Internal bus line
TM0
TDR0
Timer 0
Clock
TDR1
Timer 1
Clock
Clear
Clear
16bit Comparator
T1IF
MUX
PS2
PS4
PS6
PS8
T0CN
T0ST
0
0
Timer mode register 2
TM2
ADDRESS : 00D1
RESET VALUE : -000 0000
b
RW
RW
RW
Timer 2 data register
TDR2
ADDRESS : 00D4
RESET VALUE : Undefined
RW
RW
RW
T3SL0 T2ST
T2CN T2SL1 T2SL0
T3SL1
T3ST
Timer 3 data register
TDR3
ADDRESS : 00D5
RESET VALUE : Undefined
RW
Timer 2 input clock
00: PS2 (f
ex
/ 2
)
01: PS4 (f
ex
/ 2
4
)
10: PS6 (f
ex
/ 2
6
)
11: PS8 (f
ex
/ 2
8
)
Timer 3 input clock
00: Timer 2 overflow (16bit mode)
01: PS2 (f
ex
/ 2
)
10: PS4 (f
ex
/ 2
4
)
11: PS6 (f
ex
/ 2
6
)
0: Count Hold
1: Count Continue
Timer 2 control
0: Count Hold
1: Count Clear and Start
Timer 2 start
0: Count Hold
1: Count Clear and Start
Timer 3 start
Port function select Register 1
FUNC1
ADDRESS : 00CE
RESET VALUE : -000 0000
b
W
W
W
INT4S INT3S INT2S INT1S INT0S
EC2S
EC3S
R27/EC3
0: R27
1: EC3
R25/EC2
0: R25
1: EC2
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
W
W
W
W
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|---|---|
| HMS81C4460 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS |
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| HMS87C1102A | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS |
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