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参数资料
| 型号： | MSM82C53-2 |
| 厂商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Programmable Universal Timers(可编程中断定时器,最高计数频率8MHz) |
| 中文描述： | 可编程通用定时器（可编程中断定时器，最高计数频率为8MHz） |
| 文件页数： | 7/19页 |
| 文件大小： | 149K |
| 代理商： | MSM82C53-2 |
7/19
Semiconductor
MSM82C53-2RS/GS/JS
DESCRIPTION OF PIN FUNCTIONS
SYSTEM INTERFACING
16 bits
Address Bus
Control Bus
D
7
-
0
A
1
A
0
A
1
A
0
CS
8 bits
RD
WR
8 bits
Data Bus
MSM82C53-2
Counter #1
OUT GATE CLK
Counter #0
OUT GATE CLK
OUT GATE CLK
Counter #2
Pin Symbol
D
7
- D
0
Function
Name
Bidirectional
Data Bus
Three-state 8-bit bidirectional data bus used when writing control words
and count values, and reading count values upon reception of
WR
and
RD
signals from CPU.
Data transfer with the CPU is enabled when this pin is at low level. When
at high level, the data bus (D
0
thru D
7
) is switched to high impedance
state where neither writing nor reading can be executed. Internal registers,
however, remain unchanged.
Input/Output
A
0
- A
1
One of the three internal counters or the control word register is selected
by A
0
/A
1
combination. These two pins are normally connected to the two
lower order bits of the address bus.
Supply of three clock signals to the three counters incorporated in
MSM82C53-2.
Control of starting, interruption, and restarting of counting in the three
respective counters in accordance with the set control word contents.
Output of counter output waveform in accordance with the set mode and
count value.
Address Input
Input
RD
Data can be transferred from MSM82C53-2 to CPU when this pin is at low
level.
Data can be transferred from CPU to MSM82C53-2 when this pin is at low
level.
Read Input
Input
WR
Write Input
Input
CLK
0
-
2
Clock Input
Input
GATE
0
-
2
Gate Input
Input
OUT
0
-
2
Counter Output
Output
CS
Chip Select
Input
Input
Input/Output
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MSM82C53-2 GS-K | 制造商:ROHM Semiconductor 功能描述: |
| MSM82C53-2GS | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:CMOS PROGRAMMABLE INTERVAL TIMER |
| MSM82C53-2JS | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:CMOS PROGRAMMABLE INTERVAL TIMER |
| MSM82C53-2RS | 制造商:ROHM Semiconductor 功能描述: |
| MSM82C53-2XX | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:CMOS PROGRAMMABLE INTERVAL TIMER |
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