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參數(shù)資料
| 型號(hào)： | MSM6789 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | SBC Solid-State Recorder IC |
| 中文描述： | 西南貝爾固態(tài)記錄器集成電路 |
| 文件頁(yè)數(shù)： | 41/53頁(yè) |
| 文件大?。?/td> | 813K |
| 代理商： | MSM6789 |
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Semiconductor
MSM6789A/6789L
PIN DESCRIPTIONS (for MSM6789L (3.3 V Version)) (Continued)
Symbol Type
Description
Mode Selection.
Low level : Stand-alone mode
High level : Microcontroller interface mode
A high input level causes the MSM6789L to be initialized and to go into the power
down state.
PDWN
I
Power Down.
When a low level is input the MSM6789L goes to the power down
state. Unlike the RESET pin, this pin does not force the MSM6789L to be reset.
When an Low level is applied to this pin during recording operation, the MSM6789L
is halted, and will be maintained in the power down state while
PDWN
is low level.
After this pin is restored to a high level, postprocessing for recording will be
performed.
RSEL1
RSEL2
I
I
MSEL2
L
L
L
L
MSEL1
L
L
L
L
RSEL2
L
L
H
H
RSEL1
L
H
L
H
Memory capacity
4M
4M
4M
4M
￥
1
￥
2
￥
3
￥
4
These pins select the number of serial registers to be connected
externallly.
MCUM
I
RESET
I
Bidirectional data bus to transfer commands and data to and from an external
microcontroller.
D0
D1
D2
D3
I/O
Write Pulse Input.
Inputting a low pulse to
WR
pin causes a command or data
to be input via D0 to D3 pins.
Read Pulse Input.
Inputting a low pulse to
RD
pin causes status bits or data to
be output via D0 to D3 pins.
Chip Enable Input.
When the
CE
pin is set to low level and the CE pin is set to a
high level, the write pulse (
WR
) or read pulse (
RD
) can be accepted.
When the
CE
pin is set to a high level or CE pin is set to a low level, the write pulse
(
WR
) and read pulse (
RD
) cannot be accepted so that data cannot be communicated
via D0 to D3 pins.
Busy.
This pin outputs a high level while a command is being executed. When this
pin is held high, do not apply any data to D0 to D3 pins. The state of this pin is the
same as the contents of the BUSY bit of the status register.
WR
I
RD
I
CE
CE
I
Pin
60
56
57
34
62
24
25
26
27
63
64
65
35
RPM.
This pin outputs a high level during recording or playback operation. The
state of this pin is the same as the contents of the RPM bit of the status register.
RPM
O
BUSY
O
30
29
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MSM6789A | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:SBC Solid-State Recorder IC |
| MSM6789L | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:SBC Solid-State Recorder IC |
| MSM6791 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:DRAM Interface IC |
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| MSM67P620 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:HIGH PERFORMANCE CMOS 16-BIT SINGLE CHIP MICROCONTROLLER |
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