參數(shù)資料
型號(hào)： UPD780023AGK-xxx-9ET
廠商： NEC Corp.
元件分類： 圓形連接器
英文描述： Circular Connector; No. of Contacts:56; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:25-4 RoHS Compliant: No
中文描述： 8位單晶片微控制器
文件頁數(shù)： 62/96頁
文件大?。?/td> 661K
代理商： UPD780023AGK-XXX-9ET
65
PD780021A, 780022A, 780023A, 780024A, 780021AY, 780022AY, 780023AY, 780024AY
Data Sheet U14042EJ4V0DS
(2/3)
(2) Read/Write Operation (TA = –40 to +85
°C, VDD = 2.7 to 4.0 V)
Parameter
Symbol
Conditions
MIN.
MAX.
Unit
ASTB high-level width
tASTH
0.3tCY
ns
Address setup time
tADS
30
ns
Address hold time
tADH
10
ns
Input time from address to data
tADD1
(2 + 2n)tCY – 108
ns
tADD2
(3 + 2n)tCY – 120
ns
Output time from RD
↓ to address
tRDAD
0
200
ns
Input time from RD
↓ to data
tRDD1
(2 + 2n)tCY – 148
ns
tRDD2
(3 + 2n)tCY – 162
ns
Read data hold time
tRDH
0ns
RD low-level width
tRDL1
(1.5 + 2n)tCY – 40
ns
tRDL2
(2.5 + 2n)tCY – 40
ns
Input time from RD
↓ to WAIT↓
tRDWT1
tCY – 75
ns
tRDWT2
tCY – 60
ns
Input time from WR
↓ to WAIT↓
tWRWT
tCY – 50
ns
WAIT low-level width
tWTL
(0.5 + 2n)tCY + 10
(2 + 2n)tCY
ns
Write data setup time
tWDS
60
ns
Write data hold time
tWDH
10
ns
WR low-level width
tWRL1
(1.5 + 2n)tCY – 30
ns
Delay time from ASTB
↓ to RD↓
tASTRD
10
ns
Delay time from ASTB
↓ to WR↓
tASTWR
2tCY – 30
ns
Delay time from
tRDAST
0.8tCY – 30
1.2tCY
ns
RD
↑ to ASTB↑ at external fetch
Hold time from
tRDADH
0.8tCY – 30
1.2tCY + 60
ns
RD
↑ to address at external fetch
Write data output time from RD
↑
tRDWD
40
ns
Write data output time from WR
↓
tWRWD
20
120
ns
Hold time from WR
↑ to address
tWRADH
0.8tCY – 30
1.2tCY + 60
ns
Delay time from WAIT
↑ to RD↑
tWTRD
0.5tCY
2.5tCY + 50
ns
Delay time from WAIT
↑ to WR↑
tWTWR
0.5tCY
2.5tCY + 50
ns
Caution
TCY can only be used when the MIN. value is 0.4
s.
Remarks
1.
tCY = TCY/4
2.
n indicates the number of waits.
3.
CL = 100 pF (CL indicates the load capacitance of the AD0 to AD7, AD8 to AD15, RD, WR, WAIT,
and ASTB pins.)
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