參數(shù)資料
型號: UPD780032AYGK
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8位單晶片微控制器
文件頁數(shù): 43/70頁
文件大小: 527K
代理商: UPD780032AYGK
43
μ
PD780031AY, 780032AY, 780033AY, 780034AY
Data Sheet U14045EJ1V0DS00
(2) Read/Write Operation
(T
A
= –40 to + 85
°
C, V
DD
= 4.0 to 5.5 V)
(1/3)
Parameter
Symbol
Test 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
WAIT
input time from RD
t
RDWT1
t
CY
– 43
ns
t
RDWT2
t
CY
– 43
ns
WAIT
input time from WR
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
RD
delay time from ASTB
t
ASTRD
6
ns
WR
delay time from ASTB
t
ASTWR
2t
CY
– 15
ns
ASTB
delay time from
RD
at external fetch
t
RDAST
0.8t
CY
– 15
1.2t
CY
ns
Address hold time from
RD
at external fetch
t
RDADH
0.8t
CY
– 15
1.2t
CY
+ 30
ns
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
RD
delay time from WAIT
t
WTRD
0.8t
CY
2.5t
CY
+ 25
ns
WR
delay time from WAIT
t
WTWR
0.8t
CY
2.5t
CY
+ 25
ns
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.)
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