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參數資料
| 型號： | 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位單片機電視 |
| 文件頁數： | 50/100頁 |
| 文件大小： | 1943K |
| 代理商： | HMS81C43XX |
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HMS81C43xx / GMS87C4060
50
November 2001 ver 1.2
15. Interrupt interval measurement circuit
The Interrupt interval measurement circuit is shown in Fig-
ure 15-1 .
The Interrupt interval measurement circuit consists of the
input multiplexer, sampling clock multiplexer, Edge detec-
tor, 8bit counter, measured result storing register, FIFO
(9bit, 6level) interrupt, Control register, etc.
The more details about registers are shown Figure 15-2 .
Figure 15-1 Block Diagram of Interrupt interval measurement circuit
Control
The HMS81C43xx/GMS87C4060 contains a Interrupt in-
terval measurement module.
1. Select interrupt input pin what you want to measure by
set the FUNC1 [00CE
H
].
2. Set IDCR [00F9
H
] : FIFO clear, interrupt mode, inter-
rupt edge select, external interrupt select between INT3
and INT4, sampling clock select.
3. Set IDCR [00F9
H
] : set IDST to start measuring.
4. Counter value is stored to IDR [00FB
H
] when selected
edge is detected. After data was written, timer is cleard au-
tomatically and it counts continue.
5
. You can select interrupt occuring point by set Interrupt
Mode Select bit (IMS), every edge what you selected or
FIFO 4 level is filled.
6. If input signal’s interval is larger than maximum counter
value (0FF
H
), counter occurring an interrupt and count
again from 00
H
.
7. See Figure 15-4 FIFO operating mechanism.
MUX
IDCR [F9
H
]
I34H
I34L
ISEL
IDCK
IDST
IDFS [FA
H
]
INT3
INT4
8bit counter
FIFO
(9bit, 6level)
INTV
IMS
1
0
DPOL
FOE
FFUL FEMP
FCLR
MUX
PS8
PS9
1
0
MUX
0
1
Edge detector
Clear
IDR [FB
H
]
D7
D6
D5
D4
D3
D2
D1
D0
Overflow
8
4
FCLR
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相關代理商/技術參數 |
參數描述 |
|---|---|
| HMS81C4460 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| HMS81C4X60 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| HMS81C5216 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:REMOTE CONTROLLER |
| HMS87C1102 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS |
| 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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