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參數(shù)資料
| 型號： | MSM82C54-2 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Programmable Universal Timers(可編程中斷定時器,最高計數(shù)頻率10MHz) |
| 中文描述： | 可編程通用定時器（可編程中斷定時器，最高計數(shù)頻率10MHz時） |
| 文件頁數(shù)： | 7/23頁 |
| 文件大小： | 162K |
| 代理商： | MSM82C54-2 |
7/23
Semiconductor
MSM82C54-2RS/GS/JS
DESCRIPTION OF PIN FUNCTIONS
16 bits
Adress Bus
Control Bus
D
7
-
0
A
1
A
0
A
1
A
0
CS
8 bits
RD
WR
8 bits
Data Bus
MSM82C54-2
Counter #1
OUT GATE CLK
Counter #0
OUT GATE CLK
OUT GATE CLK
Counter #2
SYSTEM INTERFACING
D
7
- D
0
Name
Bidirectional
Data Bus
Input/Output
Pin Symbol
Input/Output
Function
RD
Read Input
Input
WR
Write Input
Input
A
0
, A
1
Address Input
Input
CLK
0
-
2
Clock Input
Input
GATE
0
-
2
Gate Input
Input
Three-state 8-bit bidirectional data bus used when writing control
words and count value, and reading count values upon reception of
WR
and
RD
signals from CPU.
CS
Chip Select
Input
Input
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.
Data can be transferred from MSM82C54-2 to CPU when this pin is
at low level.
Data can be transferred from CPU to MSM82C54-2 when this pin is
at low level.
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
MSM82C54-2.
Control of starting, interruption, and restarting of counting in the
three respective counters in accordance with the set control word
contents.
OUT
0
-
2
Counter Output
Output
Output of counter output wave form in accordance with the set
mode and count value.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MSM82C54-2GS | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:CMOS PROGRAMMABLE INTERVAL TIMER |
| MSM82C54-2J3 | 制造商:OKI Semiconductor 功能描述:CPU I/OS EOL311208 制造商:ROHM Semiconductor 功能描述: |
| MSM82C54-2JS | 制造商:ROHM Semiconductor 功能描述: |
| MSM82C54-2JSDR1 | 制造商:ROHM Semiconductor 功能描述: |
| MSM82C54-2R3 | 制造商:OKI Semiconductor 功能描述:PROG'ABLE PERIPHERAL INTERFACE EOL211209 |
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