參數資料
型號: μPD78P4038
廠商: NEC Corp.
英文描述: 8/16 Bit Single Chip Microcontrollers(8/16位單片微控制器)
中文描述: 8 / 16位單片機微控制器(8 / 16位單片微控制器)
文件頁數: 36/72頁
文件大?。?/td> 325K
代理商: ΜPD78P4038
μ
PD78P4038
36
(1) Read/write operation (2/2)
Note
The hold time includes the time during which V
OH1
and V
OL1
are held under the load conditions of
C
L
= 50 pF and R
L
= 4.7 k
.
Remarks
T: T
CYK
(system clock cycle time)
n: Number of wait states (n
0)
(2) Bus hold timing
Remarks
T: T
CYK
(system clock cycle time)
a: 1 (during address wait), otherwise, 0
n: Number of wait states (n
0)
Unit
ns
ns
ns
ns
ns
ns
ns
Parameter
Data setup time (to WR
)
Data hold time (to WR
)
Note
Delay from WR
to ASTB
WR low-level width
Symbol
t
SODW
t
HWOD
t
DWST
t
WWL
MIN.
(1.5 + n) T – 30
(1.5 + n) T – 40
0.5T – 5
0.5T – 25
0.5T – 12
(1.5 + n) T – 30
(1.5 + n) T – 40
MAX.
Conditions
V
DD
= +5.0 V
±
10%
V
DD
= +5.0 V
±
10%
V
DD
= +5.0 V
±
10%
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Parameter
Delay from HLDRQ
to float
Delay from HLDRQ
to HLDAK
Delay from float to HLDAK
Delay from HLDRQ
to HLDAK
Delay from HLDAK
to active
MIN.
1T – 20
1T – 30
MAX.
(6 + a + n) T + 50
(7 + a + n) T + 30
(7 + a + n) T + 40
1T + 30
2T + 40
2T + 60
Conditions
V
DD
= +5.0 V
±
10%
V
DD
= +5.0 V
±
10%
V
DD
= +5.0 V
±
10%
Symbol
t
FHQC
t
DHQHHAH
t
DCFHA
t
DHQLHAL
t
DHAC
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