參數(shù)資料
型號: UPD780024ACW-xxx
廠商: NEC Corp.
元件分類: 圓形連接器
英文描述: Circular Connector; No. of Contacts:55; Series:JTP02R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Box Mount Receptacle
中文描述: 8位單晶片微控制器
文件頁數(shù): 64/96頁
文件大?。?/td> 661K
代理商: UPD780024ACW-XXX
64
μ
PD780021A, 780022A, 780023A, 780024A, 780021AY, 780022AY, 780023AY, 780024AY
Data Sheet U14042EJ4V0DS
(2) Read/Write Operation
(T
A
=
40 to +85
°
C, V
DD
= 4.0 to 5.5 V)
Parameter
Symbol
Conditions
MIN.
MAX.
Unit
ASTB high-level width
t
ASTH
0.3t
CY
ns
Address setup time
t
ADS
20
ns
Address hold time
t
ADH
6
ns
Data input time from address
t
ADD1
(2 + 2n)t
CY
54
ns
t
ADD2
(3 + 2n)t
CY
60
ns
Address output time from RD
t
RDAD
0
100
ns
Data input time from RD
t
RDD1
(2 + 2n)t
CY
87
ns
t
RDD2
(3 + 2n)t
CY
93
ns
Read data hold time
t
RDH
0
ns
RD low-level width
t
RDL1
(1.5 + 2n)t
CY
33
ns
t
RDL2
(2.5 + 2n)t
CY
33
ns
Input time from RD
to WAIT
t
RDWT1
t
CY
43
ns
t
RDWT2
t
CY
43
ns
Input time from WR
to WAIT
t
WRWT
t
CY
25
ns
WAIT low-level width
t
WTL
(0.5 + n)t
CY
+ 10
(2 + 2n)t
CY
ns
Write data setup time
t
WDS
60
ns
Write data hold time
t
WDH
6
ns
WR low-level width
t
WRL1
(1.5 + 2n)t
CY
15
ns
Delay time from ASTB
to RD
t
ASTRD
6
ns
Delay time from ASTB
to WR
t
ASTWR
2t
CY
15
ns
Delay time from
t
RDAST
0.8t
CY
15
1.2t
CY
ns
RD
to ASTB
at external fetch
Address hold time from
t
RDADH
0.8t
CY
15
1.2t
CY
+ 30
ns
RD
at external fetch
Write data output time from RD
t
RDWD
40
ns
Write data output time from WR
t
WRWD
10
60
ns
Address hold time from WR
t
WRADH
0.8t
CY
15
1.2t
CY
+ 30
ns
Delay time from WAIT
to RD
t
WTRD
0.8t
CY
2.5t
CY
+ 25
ns
Delay time from WAIT
to WR
t
WTWR
0.8t
CY
2.5t
CY
+ 25
ns
Caution
T
CY
can only be used when the MIN. value is 0.238
μ
s.
Remarks
1.
2.
3
.
t
CY
= T
CY
/4
n indicates the number of waits.
C
L
= 100 pF (C
L
indicates the load capacitance of the AD0 to AD7, A8 to A15, RD, WR, WAIT, and
ASTB pins.)
(1/3)
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