參數(shù)資料
型號： SCN26562C4N48
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： Dual universal serial communications controller DUSCC
中文描述： 2 CHANNEL(S), 4M bps, MULTI PROTOCOL CONTROLLER, PDIP48
封裝： PLASTIC, DIP-48
文件頁數(shù)： 15/17頁
文件大小： 101K
代理商： SCN26562C4N48
Philips Semiconductors
Product specification
SCN26562
Dual universal serial communications controller (DUSCC)
1995 May 1
15
AC ELECTRICAL CHARACTERISTICS
(Continued)
NOTES:
A
Memory read signal; not seen by DUSCC.
B
t
RALRRH
t
RAHRAL
A
t
RALRAH
B
t
RAHDDI
t
RALDDV
t
RALEOL
t
RAHEOF
EOPN
(OUTPUT)
RxDRQN
RxDAKN
RDN
MEMWN
D7–D0
t
RAHDDF
SD00217
Figure 15. DMA-Receive Single Address Mode
SYMBOL
PARAMETER
LIMITS
UNIT
SCN26562C4
Min
SCN26562C2
Min
Max
Max
t
RAHRAL
t
RALRAH
t
RALRRH
t
RALEOL
t
RAHEOF
t
RALDDV
t
RAHDDI
t
RAHDDF
Receive DMA ACKN high to low time
Receive DMA ACKN low to high time
Rx DMA ACKN low to Rx DMA REQN high
Rx DMA ACKN low to EOPN output low
Rx DMA ACKN high to EOPN output float
Rx DMA ACKN low to read data valid
Rx DMA ACKN high to read data invalid
Rx DMA ACKN high to data bus float
160
250
10
320
200
225
225
125
160
250
10
320
200
225
225
125
ns
ns
ns
ns
ns
ns
ns
ns
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