參數資料
型號: SP37E760-MC
廠商: STANDARD MICROSYSTEMS CORP
元件分類: 外設及接口
英文描述: 3.3 V I/O CONTROLLER FOR EMBEDDED APPLICATIONS
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封裝: QFP-100
文件頁數: 75/78頁
文件大?。?/td> 510K
代理商: SP37E760-MC
SMSC DS – SP37E760
Page 75
Rev. 04/13/2001
t2
t1
t5
t6
t4
t3
t4
PDATA<7:0>
nACK
nAUTOFD
Parameter
min
max
units
t1
t2
t3
t4
t5
t6
PDATA Valid to nACK Asserted
nAUTOFD Deasserted to PDATA
Changed
nACK Asserted to nAUTOFD
Deasserted
nACK Deasserted to nAUTOFD
Asserted
nAUTOFD Asserted to nACK Asserted
nAUTOFD Deasserted to nACK
Deasserted
0
0
80
80
0
0
ns
ns
ns
ns
ns
ns
200
200
Notes
1,2
2
NOTES:
1. Maximum value only applies if there is room in the FIFO and a terminal count has not
been received. ECP can stall by keeping nAUTOFD low.
2. nACK is not considered asserted or deasserted until it is stable for a minimum of 75 to
130 ns.
FIGURE 16 - ECP PARALLEL PORT REVERSE TIMING
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