參數(shù)資料
型號: UPD784031YGK-BE9
廠商: NEC Corp.
英文描述: 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16-/8-bit的單晶片微控制器
文件頁數(shù): 65/88頁
文件大小: 464K
代理商: UPD784031YGK-BE9
65
μ
PD784031Y
(3) External wait timing
Parameter
Symbol
Test Conditions
MIN.
MAX.
Unit
Address
WAIT
input time
t
DAWT
V
DD
= +5.0 V
±
10 %
(2 + a) T – 40
ns
(2 + a) T – 60
ns
ASTB
WAIT
input time
t
DSTWT
V
DD
= +5.0 V
±
10 %
1.5T – 40
ns
1.5T – 60
ns
ASTB
WAIT hold time
t
HSTWTH
V
DD
= +5.0 V
±
10 %
(0.5 + n) T + 5
ns
(0.5 + n) T + 10
ns
ASTB
WAIT
delay time
t
DSTWTH
V
DD
= +5.0 V
±
10 %
(1.5 + n) T – 40
ns
(1.5 + n) T – 60
ns
RD
WAIT
input time
t
DRWTL
V
DD
= +5.0 V
±
10 %
T – 50
ns
T – 70
ns
RD
WAIT
hold time
t
HRWT
V
DD
= +5.0 V
±
10 %
nT + 5
ns
nT + 10
ns
RD
WAIT
delay time
t
DRWTH
V
DD
= +5.0 V
±
10 %
(1 + n) T – 40
ns
(1 + n) T – 60
ns
WAIT
data input time
t
DWTID
V
DD
= +5.0 V
±
10 %
0.5T – 5
ns
0.5T – 10
ns
WAIT
WR
delay time
t
DWTW
0.5T
ns
WAIT
RD
delay time
t
DWTR
0.5T
ns
WR
WAIT
input time
t
DWWTL
V
DD
= +5.0 V
±
10 %
T – 50
ns
T – 75
ns
WR
WAIT hold time
t
HWWT
V
DD
= +5.0 V
±
10 %
nT + 5
ns
nT + 10
ns
WR
WAIT
delay time
t
DWWTH
V
DD
= +5.0 V
±
10 %
(1 + n) T – 40
ns
(1 + n) T – 70
ns
Remark
T : T
CYK
(system clock cycle time)
a : 1 in address wait, 0 in the other conditions
n : the number of wait (n
0)
(4) Refresh timing
Parameter
Symbol
Test Conditions
MIN.
MAX.
Unit
Random read/write cycle time
t
RC
3T
ns
REFRQ low-level pulse width
t
WRFQL
V
DD
= +5.0 V
±
10 %
1.5T – 25
ns
1.5T – 30
ns
ASTB
REFRQ delay time
t
DSTRFQ
0.5T – 9
ns
RD
REFRQ delay time
t
DRRFQ
1.5T – 9
ns
WR
REFRQ delay time
t
DWRFQ
1.5T – 9
ns
REFRQ
ASTB delay time
t
DRFQST
0.5T – 15
ns
REFRQ high-level pulse width
t
WRFQH
V
DD
= +5.0 V
±
10 %
1.5T – 25
ns
1.5T – 30
ns
Remark
T: T
CYK
(system clock cycle time)
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