參數(shù)資料
型號: 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
文件頁數(shù): 21/44頁
文件大?。?/td> 278K
代理商: UPD31172F1-48-FN
Data Sheet U14388EJ2V0DS00
21
μ
PD31172
(4)
System bus interface parameters
(a)
Access to I/O area
Parameter
Symbol
Conditions
MIN.
MAX.
Unit
Command signal low-level width
t
CLCH
130
ns
Address setup time (to command signal)
t
AVCL
10
ns
Address hold time (from command signal)
t
CHAV
10
ns
IOCS16# valid delay time
t
AVCV
12
ns
IOCS16# floating delay time
t
AVCZ
10
ns
Data output hold time
t
DM
6
25
ns
Data output delay time
t
DO
30
ns
Data input setup time
t
DS1
10
ns
Data input setup time
Note
t
DS2
10
ns
Data input hold time
t
DH
10
ns
Note
During 16550-compatible serial communication
t
AVCL
AD (24:0)
(input)
IOR#/IOW#
(input)
IOCS16#
(output)
DATA (31:0)
(input)
DATA (31:0)
(input)
Note
DATA (31:0)
(output)
t
CHAV
t
AVCZ
t
AVCV
t
DS1
t
DH
t
DH
t
DS2
t
DM
t
DO
t
CLCH
Note
During 16550-compatible serial communication
Remark
The broken lines indicate high impedance
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