參數(shù)資料
型號： UPD784021GC-3B9
廠商： NEC Corp.
英文描述： 16/8-BIT SINGLE-CHIP MICROCOMPUTER
中文描述： 16/8-BIT單片機(jī)
文件頁數(shù)： 65/90頁
文件大?。?/td> 614K
代理商： UPD784021GC-3B9
65
m
PD784020, 784021
AC CHARACTERISTICS (T
A
= –40 to +85 °C, V
DD
= AV
DD
= 2.7 to 5.5 V, V
SS
= AV
SS
= 0 V)
(1) Read/write operation
(1/2)
Remark
T: T
CYK
(system clock cycle time)
a: 1 when address wait is applied, 0 in other cases
n: number of wait cycles (n
0)
Parameter
Address setup time
ASTB high-level width
Address hold time
(referred to ASTB
)
Address hold time
(referred to RD
)
Address
RD
delay time
Address float time
(referred to RD
)
Address
data input time
ASTB
data input time
RD
data input time
ASTB
RD
delay time
Data hold time
(referred to RD
)
RD
address active time
RD
ASTB
delay time
RD low-level width
Address hold time
(referred to WR
)
Address
WR
delay time
ASTB
data output delay time
ASTB
data output time
ASTB
WR
output delay time
Symbol
t
SAST
t
WSTH
t
HSTLA
t
HRA
t
DAR
t
FRA
t
DAID
t
DSTID
t
DRID
t
DSTR
t
HRID
t
DRA
t
DRST
t
WRL
t
HWA
t
DAW
t
DSTOD
t
DWOD
t
DSTW
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Min.
(0.5 + a) T – 11
(0.5 + a) T – 15
(0.5 + a) T – 17
(0.5 + a) T – 40
0.5T – 24
0.5T – 34
0.5T – 14
(1 + a) T – 5
(1 + a) T – 10
0.5T – 9
0
0.5T – 2
0.5T – 12
1.5T – 2
1.5T – 12
0.5T – 9
(1.5 + n) T – 30
(1.5 + n) T – 40
0.5T – 14
(1 + a) T – 5
(1 + a) T – 10
0.5T – 9
Max.
0
(2.5 + a + n) T – 37
(2.5 + a + n) T – 52
(2 + n) T – 40
(2 + n) T – 60
(1.5 + n) T – 50
(1.5 + n) T – 70
0.5T + 15
0.5T + 20
0.5T – 11
Conditions
V
DD
= +5.0 V
±
10 %
V
DD
= +5.0 V
±
10 %
V
DD
= +5.0 V
±
10 %
V
DD
= +5.0 V
±
10 %
V
DD
= +5.0 V
±
10 %
V
DD
= +5.0 V
±
10 %
V
DD
= +5.0 V
±
10 %
Upon program
V
DD
= +5.0 V
±
10 %
read
Upon data read
V
DD
= +5.0 V
±
10 %
V
DD
= +5.0 V
±
10 %
V
DD
= +5.0 V
±
10 %
V
DD
= +5.0 V
±
10 %
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