參數(shù)資料
型號(hào): UPD31172F1-48-FN
廠商: NEC Corp.
英文描述: VRC4172TM COMPANION CHIP FOR VR4121TM
中文描述: VRC4172TM伴侶芯片VR4121TM
文件頁(yè)數(shù): 32/44頁(yè)
文件大?。?/td> 278K
代理商: UPD31172F1-48-FN
Data Sheet U14388EJ2V0DS00
32
μ
PD31172
(e)
Write timing in EPP1.9 mode
Parameter
Symbol
Conditions
MIN.
MAX.
Unit
IOCHRDY setup time
t
22
3 T
ns
CD (7:0) output delay time
t
23
30
ns
STROBE# setup time, DIR1284 cancellation time
(from IOW#
)
t
24
5 T
ns
STROBE# setup time, DIR1284 cancellation time
(from BUSY
)
t
25
4 T
ns
SELECTIN#, AUTOFEED# setup time
(from STROBE#
, valid data output)
t
26
0
ns
Timeout generation time
t
27
10
μ
s
SELECTIN#, AUTOFEED# cancellation time
(from IOW#
)
t
28
3 T
ns
IOCHRDY cancellation time
t
29
4 T
ns
CD (7:0) hold time
t
30
1 T
ns
STROBE# cancellation time, DIR1284 setup time
t
31
1 T
ns
Remark
T: Parallel interface internal clock cycle (41.6 ns (MIN.))
AD (24:0),
DATA (31:0)
(input)
IOW# (input)
Valid data
t
27
t
22
t
29
t
31
t
24
t
23
t
24
t
25
t
30
t
31
t
28
t
26
Valid data
IOCHRDY
(output)
STROBE#
(output)
SELECTIN#
AUTOFEED#
(output)
CD (7:0)
(output)
DIR1284
(output)
BUSY
(input)
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