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參數(shù)資料
| 型號： | UPD765A |
| 廠商： | NEC Corp. |
| 英文描述： | Single/Double Density Floppy-Disk Controller |
| 中文描述： | 單/雙密度軟盤控制器 |
| 文件頁數(shù)： | 7/17頁 |
| 文件大?。?/td> | 344K |
| 代理商： | UPD765A |
AC Characteristics
(cont)
Parameter
Symbol
Min Typ
(1)
Max Unit Conditions
800
delay from
DRQ
ns
S-MHz CLK
Note 4
delay
from
DRQ
250
ns
response time
from DRQ
12
Notes:
(1) Typical values for TA = 25°C and nominal supply voltage.
(2)
Under software controLThe range is frms to 16ms at 8-Mhz
clock period, and 2 ms to 32 ms at
4-Mhz
clock period.
(3) When one device is
executing
a SEEK operation, SENSE DRIVE
STATUS is executed on another device.
(4) Double these values for a
4-MHZ
clock period
(5)
Thedrivesiderating
has a variance of ~5Ons from the minimum
value.
liming Waveforms
Processor Read Operation
Processor Write Operation
CS, DACK
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PDF描述 |
|---|---|
| UPD765B | Single/Double Density Floppy-Disk Controller |
| UPD77015 | 16 bits, Fixed-point Digital Signal Processor |
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| UPD77018 | 16 bits, Fixed-point Digital Signal Processor |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD765AC | 制造商:NEC Electronics Corporation 功能描述:DISK CONTROLLER, 40 Pin, DIP |
| UPD765AC-2 | 制造商:NEC Electronics Corporation 功能描述:DISK CONTROLLER, 40 Pin, DIP |
| UPD76F0107GC(A)-8EU-A | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD76F0108GC(A)-UEU-AX | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD76F0108GC(A)-UEU-SSA-AX | 制造商:Renesas Electronics Corporation 功能描述: |
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