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參數(shù)資料
型號: W83787F
廠商: WINBOND ELECTRONICS CORP
英文描述: WINBOND I/O WITH SERIAL-INFRARED SUPPORT
中文描述: 華邦的I /串行O型紅外線支持
文件頁數(shù): 92/123頁
文件大小: 1751K
代理商: W83787F
W83787IF
Publication ReleaseDate:Sep 1995
- 92 -
Revision A1
8.3.7 EPP Data or Address Write Cycle Timing Parameters, continued
PARAMETER
SYM.
t20
t21
t22
MIN.
10
0
0
MAX.
12
UNIT
μ
S
nS
nS
Time out
Command Deasserted to WAIT Asserted
IOW Deasserted to WRITE Deasserted and PD
invalid
8.3.8 Parallel Port FIFO Timing Parameters
PARAMETER
SYMBOL
t1
t2
t3
t4
t5
t6
MIN.
600
600
450
80
680
MAX.
UNIT
nS
nS
nS
nS
nS
nS
DATA Valid to nSTROBE Active
nSTROBE Active Pulse Width
DATA Hold from nSTROBE Inactive
BUSY Inactive to PD Inactive
BUSY Inactive to nSTROBE Active
nSTROBE Active to BUSY Active
500
8.3.9 ECP Parallel Port Forward Timing Parameters
PARAMETER
SYMBOL
t1
t2
t3
t4
t5
t6
t7
t8
MIN.
0
0
80
80
0
80
0
80
MAX.
60
60
180
180
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
nAUTOFD Valid to nSTROBE Asserted
PD Valid to nSTROBE Asserted
BUSY Deasserted to nAUTOFD Changed
BUSY Deasserted to PD Changed
nSTROBE Deasserted to BUSY Deasserted
BUSY Deasserted to nSTROBE Asserted
nSTROBE Asserted to BUSY Asserted
BUSY Asserted to nSTROBE Deasserted
200
180
8.9.10 ECP Parallel Port Reverse Timing Parameters
PARAMETER
SYMBOL
t1
t2
t3
t4
t5
t6
MIN.
0
0
0
0
80
80
MAX.
UNIT
nS
nS
nS
nS
nS
nS
PD Valid to nACK Asserted
nAUTOFD Deasserted to PD Changed
nAUTOFD Asserted to nACK Asserted
nAUTOFD Deasserted to nACK Deasserted
nACK Deasserted to nAUTOFD Asserted
PD Changed to nAUTOFD Deasserted
200
200
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